Showing 393 tools
JSON Formatter
Format, validate, and beautify JSON data
Word Counter
Count words, characters, sentences, and paragraphs instantly
Currency Converter
Convert between 150+ currencies with live market exchange rates updated daily
QR Code Generator
Generate QR codes for URLs, text, WiFi, and more
Crypto & Currency Converter
Convert between 30+ cryptocurrencies and 55+ fiat currencies at live market rates - with price charts and a top-20 market overview
Wordle Game
Classic 5-letter word guessing game. 6 attempts, color-coded feedback, virtual keyboard, hard mode, and win/loss statistics. Unlimited plays.
Sudoku Game
Full Sudoku with 4 difficulty levels (Easy–Expert), pencil marks, conflict highlighting, hints, and timer.
Image Compressor
Compress JPG, PNG, and WebP images without losing quality
GPA Calculator
Calculate your GPA with any grading scale
Unit Converter
Convert between 130+ units across 13 categories: length, weight, temperature, volume, area, speed, time, data, pressure, energy, power, frequency, and angle
HTML, CSS & JS Editor
Live browser-based HTML, CSS and JavaScript editor with instant preview, console output, device preview, and 7 starter templates
Temperature Converter
Convert absolute temperatures between Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, Newton, and Rømer. All 8 scales shown simultaneously with quick-reference presets.
2048 Game
Slide and merge numbered tiles to reach 2048. Arrow key and swipe controls, score and best-score tracking.
Merge PDF
Combine multiple PDF files into a single document instantly
Resume / CV Builder
Build a professional resume with multiple templates, live preview, and PDF download.
Invoice Generator
Create professional invoices and download as PDF
Tetris Game
Full Tetris with all 7 tetrominoes, ghost piece, hold, hard drop, level-based scoring, and high score.
Chess vs AI
Full chess vs AI - legal moves, castling, en passant, check/checkmate, 3 difficulty levels, move history.
Blog SEO Analyzer
Analyze your blog post's SEO and get a detailed score
EMI Calculator
Calculate monthly EMI, total interest, and amortization schedule for any loan
Gold Price Calculator
Calculate the live market value of gold by weight, karat, and currency - with markup, all-karat reference table, and multi-currency breakdown
Password Generator
Generate strong, random passwords
World Clock
Track live time across 100+ cities - with analog/digital clocks, day/night indicator, DST badge, time converter, and meeting planner to find the best overlap hours
Periodic Table
Interactive periodic table with all 118 elements - color-coded categories, search, state/block filters, and a full property detail panel.
Connections Game
Group 16 words into 4 hidden categories. 4 difficulty tiers, 4 mistake chances, shuffle, and 20 pre-built puzzles.
Image Resizer
Resize images to any dimension while maintaining aspect ratio
Photo Color Picker
Pick any color from a photo with a magnifier, get HEX/RGB/HSL/HSV/CMYK values, extract a dominant palette, and check WCAG contrast.
Loan Calculator
Calculate monthly loan payments, total interest, full amortization schedule, and how extra payments shorten your loan
IP Address Lookup
Look up any IP address or domain - get geolocation, ISP, ASN, timezone, currency, and an interactive map
Scoreboard
Live scoreboard for any sport or game - track scores, fouls, sets, and time across 2–8 teams with sport presets and fullscreen display
Typing Speed Test
Test your typing speed with timed or word-count modes, real-time WPM and accuracy, 5 content categories, character-by-character highlighting, grade S–F, and results history.
Scientific Calculator
Full scientific calculator with trig (sin/cos/tan/inverses), log/ln, factorials, powers, roots, constants (π, e, φ), and calculation history. DEG/RAD toggle.
Snake Game
Classic snake on a 20×20 canvas grid. Arrow/WASD controls, 3 speed modes, high score, pause.
Case Converter
Convert text between uppercase, lowercase, title case, and more
MCQ Quiz Maker
Create multiple-choice quizzes with a timer, shuffle, instant feedback, results breakdown, and print/export options.
Retirement Savings Calculator
Plan your retirement with confidence - calculate your projected balance, monthly income, and how long your savings will last using compound interest and the 4% rule
Percentage Calculator
Calculate percentages, percentage change, and more
Website Down Checker
Instantly check if any website is up or down - see HTTP status code, response time, DNS records (A, AAAA, MX, NS, TXT), content type, page size, and redirect chain
Countdown Timer
Multi-timer countdown with Pomodoro presets, loop mode, audio alerts, browser notifications, and visual progress rings
All-in-One Wish Generator
Generate personalized wishes for any occasion - birthday, anniversary, wedding, Eid, and 16 more events - with tone, relationship, length, and emoji options
BMI Calculator
Calculate Body Mass Index in metric or imperial. Shows BMI category, healthy weight range, BMI Prime, and Ponderal Index.
Regex Tester
Test regular expressions in real time with live match highlighting, group extraction, flag toggles, and replace mode. Supports g, i, m, s, and u flags.
Color Palette Generator
Generate 5-color palettes from a seed color using 7 harmony modes - analogous, complementary, triadic, tetradic, split-comp, monochromatic, shades.
Image to Text (OCR)
Extract text from any image using Tesseract.js OCR. Supports 17 languages including Chinese, Japanese, Arabic, Hindi. Runs 100% in your browser.
Physics Formula Sheet
Reference of 40+ physics formulas across 8 categories with variable definitions, units, usage notes, and built-in mini-calculators.
TOTP / 2FA Code Generator
Generate TOTP codes from Base32 secrets with live countdown, multiple accounts, QR code for authenticator apps, SHA-1/256/512, 6 or 8 digits, and 30s or 60s periods.
Color Format Converter
Convert colors between HEX, RGB, HSL, HSV/HSB, and CMYK - all formats shown simultaneously with a live color preview. Color picker and 12 sample swatches included.
Fuel Cost Calculator
Calculate fuel cost for any trip - enter distance, fuel efficiency (MPG/km·L/L·100km), and fuel price. Shows cost per trip, monthly, and annual totals.
Background Remover
Remove image backgrounds automatically
Open Graph Tag Generator
Generate complete Open Graph, Twitter Card, and social meta tags - with live card preview for Facebook, LinkedIn, Twitter/X, and validation
Product Price Calculator
Calculate selling price, profit margin, and markup using cost-plus, target margin, or fixed price strategies with bulk tiers and break-even analysis.
Interest Calculator
Calculate simple and compound interest - find future value, total interest earned, and effective annual rate with year-by-year breakdown
Age Calculator
Calculate your exact age in years, months & days - with birthday countdown, zodiac sign, life stats, planet ages, and age comparison
Website Font Extractor
Discover every font used on any website - Google Fonts, Adobe Fonts, self-hosted, and system fonts - with weights, formats, and ready-to-copy CSS
Website Uptime Checker
Check if multiple websites are up or down simultaneously - see HTTP status codes, response times, redirect chains, and export results as CSV with auto-refresh monitoring
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and see a full amortization schedule. Includes property tax, insurance, and PMI.
Gitignore Generator
Generate a perfect .gitignore file by selecting your languages, frameworks, IDEs, and operating systems. Combines templates and removes duplicates automatically.
CSS Box Shadow Generator
Build CSS box shadows visually with multiple layers, real-time preview, color picker, inset toggle, and preset styles.
CSS Animation Generator
Create CSS keyframe animations with live preview. 16 presets (fade, bounce, shake, pulse, flip, rubber band), duration/delay/timing controls, and copy-ready CSS.
Unix Timestamp Converter
Convert Unix timestamps ↔ human-readable dates. Auto-detects seconds/ms/µs/ns, supports 15 timezones, duration calculator, and batch converter.
Reaction Time Test
Click when the screen turns green. 5 rounds, millisecond precision, average time, and percentile rating.
Compress PDF
Reduce PDF file size while maintaining quality
Schema Markup Generator
Generate JSON-LD schema markup for 16 schema types - Article, Product, FAQ, Event, Recipe, HowTo, LocalBusiness, Job Posting, and more
Find & Replace
Find and replace text with regex, case options, whole-word matching, bulk rules, diff view, and find-and-delete.
Savings Goal Calculator
Calculate how long to reach your savings goal or how much to save monthly with compound interest, inflation adjustment, and year-by-year breakdown
Citation Generator
Generate APA, MLA, and Chicago citations
JSON Validator
Validate JSON syntax and check for errors
Gradient Generator
Create stunning CSS gradients - linear, radial, conic & repeating - with per-stop opacity, 25 mood presets, direction shortcuts, and instant CSS, Tailwind & SVG export
Birthday & Anniversary Countdown
Track birthdays, anniversaries, and special dates with live day-hour-minute-second countdowns, yearly recurrence, reminders, and full-screen display
YouTube Video Statistics
Fetch live YouTube video statistics - views, duration, publish date, category, tags, channel subscriber count, and more for any public video
Time Converter
Convert between 19 time units instantly - scientific, standard, calendar, and astronomical - with all results shown at once
Cooking Converter
Convert cooking measurements between US cups/tbsp/tsp, metric mL/L, UK pints/fluid oz, weight (g/oz/lb/kg), and oven temperatures (°C/°F/Gas Mark) - with a complete oven guide
Stopwatch
Precise stopwatch with lap recording, fastest/slowest lap highlighting, split times, CSV export, and fullscreen mode
JWT Decoder
Decode JWT tokens instantly - see header, payload, and signature. Displays algorithm, expiry countdown, and all standard claims (iss, sub, aud, exp, iat, nbf).
Color Contrast Checker
Check WCAG AA and AAA color contrast compliance for text and backgrounds. Live preview, contrast ratio, and suggestions for fixing insufficient contrast.
CSS Flexbox & Grid Visualizer
Interactive CSS Flexbox and Grid playground - tweak layout properties and see live results with colored item blocks and generated CSS.
CSS to Tailwind Converter
Convert CSS rules to Tailwind CSS utility classes. Supports flex, grid, spacing, sizing, typography, borders, shadows, position, overflow, and more.
Image Filter Tool
Apply photo filters and adjustments to images with real-time preview. 16 presets (Vivid, Vintage, Neon, Dreamy…) plus 9 manual sliders. Download as PNG.
IP Subnet Calculator
Calculate IPv4 subnet details from CIDR or subnet mask input. Get network, broadcast, host range, wildcard mask, class, private/public status, and split subnets.
Periodic Table Quiz
Test element knowledge with 4 quiz modes (multiple choice, symbol↔name, atomic# → symbol), spaced repetition, timers, category filters, streak tracking, and a missed-elements review.
Flag Quiz Game
Identify 120+ country flags from emoji. 4-choice quiz, 15s timer per question, 3 lives, high score.
Color Picker
Pick colors and get HEX, RGB, HSL, and CMYK values with sliders and harmonies
Color Wheel
Interactive color wheel to explore harmonies - pick any color and instantly generate Complementary, Analogous, Triadic, Split-Complementary, Tetradic, or Monochromatic palettes
Tip Calculator
Calculate tips and split bills instantly. Quick tip buttons, bill splitting, round-up options, and per-person breakdown.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or uploaded files. All four hashes shown simultaneously. Supports uppercase output and bulk copy.
README.md Generator
Generate professional GitHub README files with live Markdown preview. Choose sections, fill in your project details, add badges, and download README.md.
Mock Data Generator
Generate realistic fake data from a custom schema. 23 field types including names, emails, addresses, UUIDs, dates, enums. Output as JSON, CSV, or SQL.
CSS Filter Generator
Generate CSS filter declarations with real-time image preview. 14 presets plus sliders for blur, brightness, contrast, saturation, hue, sepia, grayscale, invert, and opacity.
Screenshot Annotator
Annotate screenshots with arrows, rectangles, circles, text, step numbers, highlights, and blur/censor regions. Color picker, undo, and PNG download.
Pressure Converter
Convert pressure between Pascal, kPa, MPa, GPa, bar, millibar, atm, technical atmosphere, Torr/mmHg, inHg, mmH₂O, psi, psf, ksi - 17 units simultaneously.
Aspect Ratio Calculator
Find aspect ratios from dimensions, scale images/videos maintaining ratio, and browse 12 preset ratios (16:9, 4:3, 1:1, 21:9, 9:16, cinemascope, A4). Visual previews included.
Spelling Bee Game
Form words from 7 honeycomb letters - center letter required. Score points, find pangrams, reach Genius rank.
Minesweeper Game
Classic Minesweeper - 3 difficulties, first-click safety, right-click flags, cascade reveal, timer, best time.
Split PDF
Split a PDF into multiple separate documents by page range
Social Media Card Checker
Preview and validate social media card meta tags with live mockups for Twitter/X, Facebook, LinkedIn, Slack, and Discord.
Meta Tag Checker
Check your meta title and meta description for SEO best practices
XML Sitemap Generator
Build a valid XML sitemap - add URLs individually or bulk import, set lastmod, changefreq, and priority per URL, then download sitemap.xml
Summary Generator
Generate a concise summary of any text
Email Template Designer
Build responsive HTML email templates with a visual block editor
Profit Margin Calculator
Calculate profit margins, markup, and revenue
CGPA Calculator
Calculate cumulative GPA across multiple semesters
JavaScript Formatter
Beautify and format JavaScript code
Lorem Ipsum Generator
Generate placeholder text in seconds - classic Lorem Ipsum, Hipster, Corporate, Pirate & Cat Ipsum with HTML, Markdown, and plain text output
Whois Domain Checker
Look up domain registration details - registrar, creation & expiry dates, name servers, DNSSEC, and owner contact info
Coin Flip Simulator
Flip a coin with 3D animation - choose from 4 themes, flip up to 5 coins, run best-of series, auto-flip, track streaks, and simulate thousands of flips.
Demo Personal Info Generator
Generate complete fake personal profiles for testing - name, contact, address, job, financial, physical, and 60+ other fields with one click
Website Screenshot Downloader
Capture full-page or viewport screenshots of any public website - choose device size, format, and wait delay, then download the image instantly
My Screen Resolution
Instantly detect your screen resolution, viewport size, device pixel ratio, physical pixels, aspect ratio, color depth, orientation, and active CSS breakpoints
SSL Checker
Check SSL/TLS certificate validity, expiry date, issuer, TLS version support, and security headers for any domain
YouTube Channel Statistics
Fetch live YouTube channel statistics - subscribers, total views, video count, join date, recent uploads, keywords, external links, and analytics for any public channel
YouTube Revenue Calculator
Estimate YouTube earnings by niche, views, and CPM - with AdSense, memberships, and sponsorship breakdowns
Advanced Online Notepad
A feature-rich browser notepad with multiple notes, markdown formatting toolbar, find & replace, color coding, auto-save, and export to TXT or Markdown
Speed Converter
Convert between 22 speed units instantly - metric, imperial, nautical, and scientific reference speeds - with all results shown at once
Data Storage Converter
Convert between 23 data storage units instantly - bits, bytes, SI decimal, IEC binary, and extreme scale - with all results shown at once
Coordinate Converter
Convert GPS coordinates between Decimal Degrees (DD), Degrees Minutes Seconds (DMS), Degrees Decimal Minutes (DDM), UTM, Geo URI and Google Maps format
Appointment Scheduler
Schedule and manage appointments with a monthly calendar view, conflict detection, recurring events, browser reminders, and .ics export
Salary Calculator
Convert salary between hourly, daily, weekly, biweekly, monthly, and annual. Calculate net pay after taxes, FICA, and deductions.
BMR & TDEE Calculator
Calculate Basal Metabolic Rate and TDEE using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.
JSON Diff Viewer
Compare two JSON objects side by side. Highlights added, removed, and changed keys with color coding. Supports nested objects and arrays.
Decision Wheel Spinner
Spin a customizable wheel to make random decisions. Add up to 20 options, assign colors, spin with animation and sound, and track your history of results.
Barcode Generator
Generate 8 barcode types: Code 128, Code 39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, and Pharmacode. Customize colors, size, and download as PNG.
CSS Border Radius Generator
Create CSS border-radius values visually with per-corner controls, live preview, and presets like pill, circle, leaf, and tab.
Terms of Service Generator
Generate a comprehensive Terms of Service document for your website or app. Configurable sections for payments, subscriptions, UGC, and dispute resolution.
YAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML with real-time validation, error display, indentation control, minify option, and file upload/download.
CSS Transition Generator
Generate CSS transition declarations with multi-property support, cubic-bezier editor, live SVG curve, 8 timing functions, 8 presets, and animated preview.
Time Zone Meeting Planner
Find the best meeting time across up to 7 global time zones. Color-coded 24h grid, business hours overlap detection, custom work hours per zone, DST-aware, and meeting invite copy.
SSH Key Inspector
Paste any SSH public key to see key type, bit length, SHA-256 and MD5 fingerprints, comment, security rating, and warnings for weak key sizes.
Speed Distance Time Calculator
Solve for speed, distance, or time using the d = s × t formula. Multi-unit support (km/h, mph, m/s, knots, min/km pace) with speed equivalents table.
Flappy Bird Game
One-tap obstacle-dodging game. Click or Space to flap, avoid pipes, high score saved.
Human Benchmark
4 cognitive tests: Reaction Time, Number Memory, Verbal Memory, Sequence Memory. Compare scores to averages.
Trivia Quiz Game
200+ questions across 8 categories. 4 choices, 30s timer, explanations after wrong answers, per-category high scores.
Paraphrase Helper
Get suggestions to rephrase sentences in your own words
Secret Code Talk
Encode and decode secret messages using 18 classic ciphers - Caesar, Morse, Vigenère, Binary, Base64, Rail Fence, NATO Alphabet, Polybius Square, and more
Live Website Preview
Preview any website live inside a simulated browser frame - test responsiveness across Desktop, Laptop, Tablet, and Mobile viewports instantly
Domain Expiration Lookup
Check when any domain expires - see days remaining, urgency level, registrar, name servers, DNSSEC, EPP status codes, domain age, and DNS records
WordPress Theme Detector
Detect the WordPress theme any website is using - get theme name, version, author, active installs, rating, and a direct WordPress.org link
Grocery List
Smart grocery list with category grouping, quantity and unit fields, price tracking with running total, multiple lists, and print support
Tax Calculator
Calculate income tax using 2024 US federal brackets or sales tax. Shows taxable income, per-bracket tax, effective rate, and take-home pay.
Grade Calculator
Calculate overall grade from assignments, find required exam score for target grade, and compute GPA equivalent.
Pomodoro Timer
Stay focused with a customizable Pomodoro timer. Choose Classic (25/5/15), Extended (50/10/20), or Deep Work (90/15/30) presets, track daily sessions and total focus time, with sound alerts and auto-start.
Text Diff Checker
Compare two blocks of text line by line. Added lines are highlighted green, removed lines red. Shows line numbers, change stats, and an ignore-whitespace option.
Flashcard Maker
Create flashcard decks, study with flip animation, mark cards as known or needs review, shuffle, and track your progress. Saved to your browser automatically.
CSS Clip Path Generator
Build CSS clip-path shapes visually - polygon with drag handles, circle, ellipse, inset. 9 polygon presets including star, arrow, and hexagon.
Mind Map Creator
Create visual mind maps with draggable nodes, color-coded branches, zoom/pan canvas, collapse/expand trees, and PNG export.
XML ↔ JSON Converter
Convert XML to JSON and JSON to XML with attribute handling, number/boolean parsing, pretty-print/minify, and file upload. Powered by fast-xml-parser.
Robots.txt Rule Tester
Test any URL against robots.txt rules. Paste or fetch robots.txt, select a user-agent (Googlebot, Bingbot, GPTBot, etc.), and instantly see Allowed or Blocked with matched rule.
Sales Commission Calculator
Calculate sales commission for 4 structures: flat percentage, tiered rates, quota attainment with accelerators, and residual/recurring MRR commissions.
Privacy Policy Generator
Generate a comprehensive privacy policy for your website or app. Choose GDPR, CCPA, COPPA compliance options, data types collected, and third-party services.
Bubble Shooter
Shoot colored bubbles to pop groups of 3+. Hex grid, wall bounce, floating-bubble combos, score tracking.
Robots.txt Generator
Build a robots.txt file visually - define crawl rules per bot, block paths, set crawl delay, and add your sitemap URL
VAT Calculator
Calculate VAT/GST for any amount and rate
Weight Converter
Convert between 37 weight and mass units instantly - metric, imperial, troy, scientific, and Asian traditional units - with all results shown at once
SIP & Investment Calculator
Calculate SIP returns, lump sum growth, CAGR, and goal-based SIP. Year-by-year growth table and visual corpus chart.
Sleep Cycle Calculator
Find optimal bedtimes and wake times for complete 90-minute sleep cycles. Nap optimizer and sleep debt calculator included.
Date Difference Calculator
Find difference between dates in years, months, days. Age calculator, add/subtract dates, and business days counter.
Zodiac & Astrology Calculator
Find Western and Vedic zodiac signs, Chinese zodiac animal, and Life Path Number from any birthdate.
Markdown Editor & Preview
Write Markdown and see a live rendered preview side by side. Toolbar with bold, italic, headings, lists, code blocks, tables, and links. Export as .md or copy HTML.
Kanban Board
A drag-and-drop Kanban board with customizable columns. Add cards with priorities, drag between columns, and all changes saved to your browser automatically.
Barcode Decoder
Upload any image to decode barcodes - QR codes, Code 128, EAN, UPC, PDF417, Aztec, Data Matrix, and more. Uses your browser's native detection API.
Font Pairing Tool
Browse 22 curated Google Font pairings with live preview - heading, body, button, and caption. Adjust font size, filter by category, and toggle dark mode.
NDA Generator
Generate a Unilateral or Mutual Non-Disclosure Agreement with configurable parties, purpose, duration, governing law, and optional clauses.
Code Snippet Manager
Save, search, and organize reusable code snippets in your browser. Multi-language, tagging, favorites, copy, and import/export as JSON.
Multiplication Table Generator
Generate custom multiplication tables in full grid or single-number mode. Highlight multiples and perfect squares, 5 color schemes, practice mode, and CSV/print export.
Number to Words Converter
Convert any integer up to 999 trillion into English words. Modes: cardinal (one thousand), ordinal (one thousandth), and currency (one thousand dollars and fifty cents).
Word Search Game
Find hidden words in a 15×15 letter grid. 8 directions, 6 themed categories, click-and-drag selection, timer.
Geography Guesser
Guess the mystery country from progressive hints: continent, region, population, coastline, neighbors, first letter.
JPG to PDF
Convert JPG images to a PDF document quickly
Image Cropper
Crop images to any size or aspect ratio
Keyword Density Checker
Check keyword density and frequency in your content
Character Counter
Count characters with and without spaces
Visiting Card Generator
Design and download a professional visiting card as a print-ready PDF with multiple templates
Email Signature Generator
Create professional HTML email signatures
HTML Formatter
Beautify and format HTML code
WordPress Plugin Detector
Detect all WordPress plugins installed on any website - see plugin name, version, author, active installs, rating, and WordPress.org links
YouTube Region Restriction Checker
Check which countries can watch a YouTube video and where it's geo-blocked - instant results, no API key needed
YouTube Video Revenue Estimator
Estimate YouTube earnings for a single video or an entire channel - with video length, audience retention, region tier, and multi-stream revenue breakdown
Length Converter
Convert between 25+ length and distance units instantly - metric, imperial, nautical, astronomical, and typography units - with all results shown at once
Fuel Consumption Converter
Convert fuel efficiency between L/100km, mpg (US), mpg (UK), km/L, L/km, L/mile and gallons/100mi. Handles reciprocal unit relationships and US vs UK gallon difference
Medication Reminder
Track medications with flexible schedules, mark doses as taken or skipped, monitor 30-day adherence, track refill counts, and export history as CSV
QR Code Decoder
Decode QR codes from uploaded images, your camera, or a URL - supports URL, Wi-Fi, email, phone, vCard, iCal, geo-location, and plain text QR codes
Equation Solver
Solve linear, quadratic, and simultaneous equations with step-by-step solutions. Shows discriminant, roots, vertex, Cramer's rule, and working.
ROI Calculator
Calculate return on investment, annualized ROI, and compare up to 5 investments side by side. Color-coded profit/loss display.
Calorie Deficit Calculator
Calculate your daily calorie deficit for weight loss. Set rate, see time to goal weight, and get macro breakdown at target calories.
Pregnancy Due Date Calculator
Calculate estimated due date from LMP, conception, IVF, or ultrasound. Shows gestational age, trimester, and key milestones.
UUID Generator
Generate version 4 UUIDs in bulk (1–1,000). Options for uppercase, with/without hyphens, copy all, and download as .txt. Uses cryptographic randomness.
Code Minifier & Beautifier
Minify or beautify JavaScript, CSS, and HTML. Shows original vs output size, compression percentage, line count. Copy or download the result.
Habit Tracker
Track daily habits with a visual calendar grid. See streaks, completion rates, and progress over time. Add custom habits with colors and emojis. Auto-saved.
Reading Speed Calculator
Test your reading speed (WPM) with 3 built-in texts (Easy/Medium/Hard) or custom text. Includes comprehension quiz, accuracy score, WPM scale, and history.
History Timeline Maker
Build visual history timelines with BCE/CE dates, 8 color-coded categories, event descriptions, search/filter, and JSON export/import. Saved in your browser.
Employee Schedule Maker
Build weekly employee shift schedules with color-coded shifts, custom hours, weekly totals, overtime alerts, copy-week, CSV export, and localStorage persistence.
Aim Trainer
Click appearing targets as fast as possible. 15/30/60s rounds, 3 target sizes, accuracy and best score.
Capital City Quiz
Name the capital of 150+ countries. Multiple choice or typed mode, timer, 3 lives, streak bonus, best score.
Connect Four
Drop pieces to connect 4 in a row vs minimax AI (depth 5). Column preview, win highlighting, score tracking.
Discount Calculator
Calculate discounts, sale prices, and savings
Exam Routine Maker
Build and manage your exam schedule with countdown timers and a study plan
Website Auto Reload
Auto-reload any website at custom intervals - choose 5 sec to 10 min, watch a live countdown, and track total reloads in an inline browser preview
Area Converter
Convert between 37 area units instantly - metric, imperial, East Asian, South Asian land, and scientific units - with all results shown at once
Power Converter
Convert power between watts, kilowatts, horsepower, BTU/h, tons of refrigeration, and 13 more units - for electrical engineering, mechanical systems, and HVAC
Fraction Calculator
Add, subtract, multiply, divide, and simplify fractions with step-by-step working. Shows result as fraction, decimal, and mixed number.
Debt Payoff Calculator
Compare Avalanche vs Snowball debt payoff strategies. Add multiple debts and extra monthly payments to find your debt-free date.
Ovulation & Fertility Calculator
Find ovulation date and fertile window from LMP and cycle length. Shows next 3 cycles with calendar-style color coding.
Calendar
A clean, browser-based personal calendar. Add, edit, and delete events with custom colors, date ranges, times, and recurring schedules. All data saved locally - no login required. Export to .ics for any calendar app.
SQL Formatter
Format messy SQL queries into clean, readable code. Choose keyword case (UPPER/lower), indentation (2 or 4 spaces), and minify option. Supports SELECT, INSERT, UPDATE, DELETE, and DDL.
Browser Storage Inspector
View, edit, add, and delete localStorage, sessionStorage, and cookies. Inspect JSON values, search entries, and export all storage as JSON.
ASCII Art Generator
Convert text to ASCII art using a canvas pixel-sampling engine. 8 character sets, 6 render fonts, adjustable column width, and invert mode.
Memory Card Match
Flip emoji card pairs in 3 difficulty sizes and 3 themes. Timer, flip counter, and best-score tracking.
SERP Preview Generator
Preview how your page looks in Google search results
Base64 Encoder/Decoder
Encode and decode Base64 strings
Volume Converter
Convert between 35+ volume units instantly - metric, US customary, UK imperial, cooking, and engineering units - with all results shown at once
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and any custom base (2–36). Includes ASCII/character mode and nibble-grouped binary display.
GST Calculator
Add or remove GST from any price. Supports Indian GST slabs (5%/12%/18%/28%), IGST/CGST/SGST split, and multi-item invoice totals.
Macro Calculator
Calculate daily protein, carbs, and fat targets. Preset splits: Standard, Low Carb, High Protein, Ketogenic, and Custom.
Time Duration Calculator
Add multiple time durations, calculate work hours, convert between 20 time zones, and estimate travel time.
Ohm's Law Calculator
Solve for voltage, current, resistance, or power from any two known values. All SI prefixes and Ohm's law triangle diagram.
Dog & Cat Age Calculator
Convert dog years to human years using the 2019 scientific formula. Size-adjusted rates and cat age included.
Cron Expression Builder
Build and understand cron expressions visually. Enter minute, hour, day, month, and weekday fields, get a human-readable description, and preview the next 5 run times.
Math Wordle (Nerdle)
Guess a hidden 8-character arithmetic equation in 6 tries. Nerdle-style color-coded feedback for digits and operators.
PDF to JPG
Convert PDF pages to high-quality JPG images
Social Media Image Sizer
Resize images to perfect social media dimensions
Quotation Generator
Create professional business quotations
HEX to RGB Converter
Convert HEX color codes to RGB values
Live Website Screenshot
Auto-capture a live screenshot of any website as you type and monitor it with auto-refresh at custom intervals - no button press needed
Energy Converter
Convert energy between joules, kilowatt-hours, BTU, calories, electron-volts, and 18 more units - for physics, engineering, chemistry, and everyday calculations
Wire Gauge Converter
Convert AWG wire gauge to mm diameter, mm² area, circular mils, resistance (Ω/km), and ampacity. Look up SWG (British) gauges and find nearest AWG from any metric diameter.
Frequency Converter
Convert between frequency units - Hz, kHz, MHz, GHz, THz, RPM, rad/s, cycles/min - for RF engineering, signal processing, and mechanical systems
GCD & LCM Calculator
Find the Greatest Common Divisor (GCD/HCF) and Least Common Multiple (LCM) of up to 5 numbers, with prime factorization tables and Euclidean algorithm steps.
Net Worth Calculator
Track total assets and liabilities by category. Auto-calculates net worth with visual breakdown. Saved in local storage.
Body Fat Calculator
Estimate body fat percentage using US Navy, BMI-based, or skinfold methods. Shows lean mass, fat mass, and fitness category.
Triangle Calculator
Solve right triangles (Pythagorean), any triangle (SSS/SAS/ASA), and calculate area. Shows all angles, sides, inradius, circumradius.
Electricity Bill Calculator
Calculate electricity costs by appliance. Monthly kWh, bill, and CO2 footprint. Tiered billing and preset appliances.
Speed Math Game
Solve 20 arithmetic problems, 10s each. Time bonus, 5-streak multiplier, 3 difficulty levels, best score.
Battleship Game
Place your fleet and battle the AI. Hunt-and-target AI. All 5 ships, 10×10 grid, hit/miss/sunk indicators.
Matrix Calculator
Add, subtract, multiply matrices, compute determinants and inverses (up to 4×4) with full step-by-step cofactor expansion and identity verification.
Water Intake Calculator
Calculate recommended daily water intake from weight, activity, and climate. Includes hourly schedule and unit conversions.
Weighted Average Calculator
Calculate weighted average of up to 20 values. Auto-normalizes weights and compares to simple average.
Recipe Scaling Calculator
Scale any recipe up or down. Smart unit conversion (tsp to tbsp to cup). Copy scaled recipe. Baking mode warnings.
Download Time Calculator
Calculate file download and upload time at any speed. Shows time at 6 preset speeds. All size and speed units supported.
Music Decade Guesser
Guess which decade a song is from. 160+ songs across 1950s–2020s, all genres, streak scoring.
WebP Converter
Convert images to and from WebP format
Study Timetable Generator
Create a personalized study schedule
CSS Formatter
Beautify and format CSS code
Color Shade Generator
Generate a full palette of shades from any base color, export as CSS vars or Tailwind config
RGB to HEX Converter
Convert RGB color values to HEX codes
URL Encoder/Decoder
Encode and decode URLs and query strings
Flow Rate Converter
Convert flow rates between L/s, m³/h, GPM, CFM, MGD, bbl/day, acre-ft/day, and 15 more units - for HVAC, plumbing, chemical engineering, and irrigation
Angle Converter
Convert angles between degrees, radians, gradians, arcminutes, arcseconds, turns, mils, and 8 more units - for mathematics, engineering, navigation, and scientific calculations
Hardness Scale Converter
Convert material hardness between Vickers (HV), Rockwell C (HRC), Rockwell B (HRB), Brinell (HBW), tensile strength (MPa/ksi) and Mohs scale per ASTM E140
Statistical Tools
Calculate mean, median, mode, standard deviation, variance, quartiles, skewness, kurtosis, percentiles, correlation, and more. Supports comma, space, newline, and tab-separated input.
Acceleration Converter
Convert between acceleration units including m/s², ft/s², g-force, and more. Essential for physics, automotive testing, and aerospace applications.
Prime Number Checker
Check if a number is prime, generate all primes in a range using Sieve of Eratosthenes, and find the prime factorization of any number.
Inflation Calculator
Calculate how inflation erodes purchasing power. Convert past to present value, project future value, and compare real vs nominal rates.
Heart Rate Zone Calculator
Calculate 5 training heart rate zones using Tanaka, Karvonen, and basic formulas. Shows BPM ranges and zone descriptions.
Circle Calculator
Calculate radius, diameter, circumference, and area from any single measurement. Includes sector, annulus, and segment calculations.
Concrete Calculator
Calculate concrete volume and bag counts for slabs, columns, footings, and walls. Cubic yards, meters, and 40/60/80 lb bags.
Carbon Footprint Calculator
Estimate annual CO2 from transport, home energy, food, and shopping. Compare to world average and 1.5C targets.
Numerology Calculator
Calculate Life Path, Expression, Soul Urge, and Personality numbers from name and birthdate. Includes compatibility.
Simon Says Game
Memory sequence game with 4 colored buttons and audio tones. Repeat the growing sequence to advance rounds.
Density Converter
Convert density between kg/m³, g/cm³, lb/ft³, lb/gal, oz/in³, slug/ft³, and 9 more units - for physics, chemistry, engineering, and materials science
Roman Numeral Converter
Convert between Arabic numbers (1–3999) and Roman numerals instantly. Shows symbol breakdown, historical era note, and quick reference table.
Ideal Body Weight Calculator
Calculate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas. Includes healthy BMI range and adjusted body weight.
Geometry Volume Calculator
Calculate volume and surface area of 10 3D shapes: sphere, cylinder, cone, cube, cuboid, prism, pyramid, torus, ellipsoid, capsule.
Solar Panel Calculator
Calculate daily and annual solar energy output, savings, payback period, and CO2 offset. 10 city peak sun presets.
Flooring & Tile Calculator
Calculate tiles, grout, boxes, and underlayment for rectangular or L-shaped rooms with adjustable waste factor.
Nutritional Info Calculator
Track daily calories, protein, carbs, and fat across meals. 50-food database, daily goal progress bar, macro breakdown.
Color Match (Stroop Test)
Click the INK color of a displayed color word. 60-second Stroop test, combo multiplier, −1s wrong-answer penalty.
Checkers Game
Classic checkers vs minimax AI (depth 4). Mandatory jumps, multi-jump chains, king promotion.
JPG to PNG Converter
Convert JPG images to PNG format
Readability Checker
Check the readability score of your content
Receipt Generator
Generate professional payment receipts
Bulk Screenshot Downloader
Capture screenshots of up to 20 websites at once and download them all as a single ZIP archive or individually
Gas Volume Converter
Convert between 23 gas volume units instantly - metric, US gas billing (SCF, CCF, MCF, BCF, TCF), SI reference (Sm³, Nm³), and imperial - with all results shown at once
Viscosity Converter
Convert between dynamic (Pa·s, cP, Poise) and kinematic (m²/s, cSt, Stokes) viscosity units across SI, CGS, and Imperial systems with a quick-access tabbed interface
Angular Velocity Converter
Convert between angular velocity units including rad/s, deg/s, RPM, and more. Essential for mechanical engineering, robotics, and rotational motion analysis.
Logarithm Calculator
Calculate log base 10, natural log (ln), log base 2, or any custom base. Shows antilog, change-of-base formula, and logarithm rules reference.
Probability Calculator
Calculate basic, compound, conditional, and normal distribution probabilities. Includes Bayes theorem and z-scores.
Resistor Color Code Calculator
Decode 4-band and 5-band resistor color codes. Bidirectional: color to value and value to color, with visual diagram.
Paint Calculator
Calculate gallons of paint for rooms with door and window deductions. Multiple rooms, coats, ceiling, and coverage rates.
Internet Speed Calculator
Convert network speed units (bps/Mbps/MB/s), check streaming quality, and calculate monthly data usage.
Factorial Calculator
Calculate factorials (n!), double factorials (n!!), nPr permutations, and nCr combinations. Shows Stirling's approximation for large n.
Alcohol Unit Calculator
Calculate alcohol units and calories from drinks. Compares to weekly guidelines and estimates sober-up time.
Battery Life Calculator
Calculate battery runtime from capacity and current draw. Power-to-current conversion, Wh, and solar charging time.
Poker Hand Odds Calculator
Texas Hold'em outs calculator, pot odds, and hand probability table using Rule of 2 and 4.
PNG to JPG Converter
Convert PNG images to JPG format
FAQ Generator
Generate FAQ questions and answers from your content
Viva Question Generator
Generate practice viva/oral exam questions for your topic
Moment of Force Converter
Convert moment of force units - N·m, kN·m, kip·ft, kip·in, kgf·m, tf·m, lbf·ft, and 9 more - essential for structural engineering, statics, and mechanical design
Salinity / TDS Converter
Convert water salinity and Total Dissolved Solids (TDS) between mg/L, ppm, g/L, ppt, PSU, % w/v, ppb, and electrical conductivity (μS/cm, mS/cm)
Typography Converter
Convert between typography units - pt, px, em, rem, pc, in, cm, mm, twip, Didot, Cicero - for web design, print layout, and desktop publishing
Concentration – Solution Converter
Convert mass concentration between g/L, mg/L, μg/L, ng/L, kg/m³, g/mL, mg/mL, g/dL, mg/dL, % (w/v), ppm, ppb, and ppt
Data Transfer Converter
Convert data transfer rates between bps, kbps, Mbps, Gbps, Tbps, Pbps, B/s, kB/s, MB/s, GB/s, Kibps, Mibps, Gibps, KiB/s, MiB/s, GiB/s
Modulo Calculator
Calculate remainders, clock arithmetic, modular exponentiation, and remainder tables. Essential for cryptography, programming, and number theory.
Permutation & Combination Calculator
Calculate nPr and nCr with formulas. Pascal triangle, repetition modes, and word arrangement calculator.
Projectile Motion Calculator
Calculate range, max height, flight time, and impact velocity from initial speed and angle. Metric and imperial.
Room Area Calculator
Calculate floor and wall area for rectangular or L-shaped rooms. Multiple rooms, flooring cost, AC sizing, and paint coverage.
URL Slug Generator
Generate SEO-friendly URL slugs from any text
Title Capitalization Tool
Properly capitalize titles using standard rules
Break-even Calculator
Calculate your break-even point for any business
Assignment Cover Page Generator
Generate professional assignment cover pages
Viscosity – Dynamic Converter
Convert dynamic (absolute) viscosity between Pa·s, mPa·s, μPa·s, Centipoise, Poise, lbf·s/ft², lb/(ft·s), lbf·s/in², kgf·s/m², and more across SI, CGS, and Imperial systems
Concentration Converter
Convert between concentration units including mass fraction, mole fraction, ppm, ppb, and more. Essential for chemistry labs, environmental testing, and pharmaceuticals.
Capacitor Calculator
Calculate capacitor charge, energy, RC time constant, and series/parallel capacitor combinations.
Baking Ratio Calculator
Calculate baker's percentages for bread, sourdough, pizza, and croissants. Enter total weight or flour weight.
Heat Density Converter
Convert heat density units - J/m³, MJ/m³, BTU/ft³, kWh/L, cal/cm³, kcal/m³, therm/ft³, and 9 more - essential for thermal energy storage, natural gas metering, and battery design
Geodetic Coordinate Converter
Convert between Geographic (lat/lon/height), ECEF (X/Y/Z), and ENU (East/North/Up) coordinate systems across 7 reference ellipsoids including WGS84, GRS80, and Bessel 1841
pH Converter
Convert between pH, pOH, [H⁺] and [OH⁻] concentrations - with interactive slider, color indicator, and acid/base/neutral classification at 25°C
Logarithmic Converter
Convert between logarithmic units including decibels (dB), Nepers, Bels, power ratios, amplitude ratios, and percentage changes. Essential for audio engineering, signal processing, and acoustics.
Concentration – Molar Converter
Convert molar concentration between mol/L (M), mM, μM, nM, pM, fM, mol/m³, kmol/m³, mol/mL, mol/dL, and more
VO2 Max Calculator
Estimate VO2 max from Rockport Walk Test, 1.5-mile run, or non-exercise formula. Shows fitness category by age and sex.
Fence Calculator
Calculate posts, panels, boards, and concrete bags for any fence perimeter. Supports standard, picket, and split-rail styles.
Stair Calculator
Calculate steps, rise, run, stringer length, and code compliance for any floor-to-floor height. Material estimate included.
Viscosity – Kinematic Converter
Convert kinematic viscosity between m²/s, Centistokes (cSt), Stokes (St), mm²/s, cm²/s, ft²/s, ft²/h, in²/s, in²/h across SI, CGS, and Imperial systems
Astronomical Distance Converter
Convert between cosmic distance units - AU, light-year, parsec, megaparsec, light-second, Ångström, km - for astronomy, astrophysics, and cosmology
Specific Heat Capacity Converter
Convert specific heat capacity between J/(kg·K), kJ/(kg·K), cal/(g·°C), kcal/(kg·°C), BTU/(lb·°F), Wh/(kg·K), and ft·lbf/(lb·°F)
Roofing Calculator
Calculate roof area, shingles, bundles, and underlayment from building footprint and pitch (rise-over-run).
Remove PDF Pages
Remove specific pages from your PDF document
Favicon Generator
Generate favicon files from any image
Paragraph Cleaner
Remove extra spaces, line breaks, and clean up paragraphs
Purchase Order Generator
Create professional purchase orders
Presentation Script Generator
Generate presentation speaking scripts from bullet points
Volume - Dry Converter
Convert between 21 dry volume units instantly - metric, US dry (pint, quart, gallon, peck, bushel, dry barrel), UK imperial (pint to quarter), and cubic - with all results shown at once
Photon Energy Converter
Convert photon energy between 23 units - eV, Joules, Hartree, Hz, THz, nm, Å, cm⁻¹, Kelvin - using exact 2019 SI constants for physics, optics, and spectroscopy
Heat Flux Density Converter
Convert heat flux density units - W/m², BTU/(hr·ft²), kW/m², cal/(s·cm²), kcal/(hr·m²), W/cm², and more - essential for heat transfer analysis, HVAC design, and solar engineering
Linear Charge Density Converter
Convert between 24 linear charge density units - C/m, μC/m, nC/m, pC/m, C/cm, C/in, abC/m, statC/cm - for electrical engineering and electrostatics
Heat Transfer Converter
Convert between heat transfer coefficient units including W/m²·K, BTU/hr·ft²·°F, cal/s·cm²·°C, and more. Perfect for engineering, HVAC, construction, and thermal analysis.
Temperature Interval Converter
Convert temperature differences (intervals) between Kelvin, Celsius, Fahrenheit, Rankine, Réaumur, Newton, Rømer, and Delisle - not absolute temperatures
Reynolds Number Calculator
Calculate Reynolds number for pipe flow. Laminar/turbulent classification with preset fluids and critical velocity.
Gravel & Mulch Calculator
Calculate volume and weight of gravel, mulch, sand, topsoil for rectangular, circular, or triangular areas.
Magnetic Flux Density Converter
Convert between magnetic flux density (B-field) units - Tesla, Gauss, Microtesla, Nanotesla, Weber/m², gamma - for electromagnetics, MRI, and geophysics
Polar to Cartesian Converter
Convert between polar (r, θ), Cartesian (x, y), cylindrical (r, θ, z), spherical (ρ, θ, φ) coordinates, and complex number forms. Supports degrees, radians, and gradians.
Thermal Conductivity Converter
Convert thermal conductivity between W/(m·K), BTU·in/(h·ft²·°F), BTU/(h·ft·°F), cal/(s·cm·°C), kcal/(h·m·°C), and more
Beam Load Calculator
Calculate bending moment, shear force, and deflection for simply supported and cantilever beams.
Wallpaper Calculator
Calculate rolls of wallpaper for any room. Deduct doors and windows, account for pattern repeats, estimate cost.
Reorder PDF Pages
Drag and drop to reorder pages in your PDF
Heading Structure Checker
Analyze your heading structure (H1-H6) for SEO
Text to Bullet Points
Convert paragraphs into formatted bullet point lists
Business Card Text Generator
Generate and format business card content
Torque Converter
Convert between 14 torque units - newton-meters, lbf·ft, lbf·in, kgf·m, dyn·cm, and more - for automotive, engineering, and construction applications
Mass Flow Rate Converter
Convert mass flow rate units - kg/s, kg/h, lb/min, lb/h, g/s, t/h, oz/min, slug/s, and more - essential for chemical engineering, fluid dynamics, and process design
Linear Current Density Converter
Convert between 24 linear current density units - A/m, μA/m, nA/m, A/cm, A/in, abA/m, statA/cm - for electrical engineering and electromagnetics
Fuel Efficiency (Mass) Converter
Convert fuel consumption by mass: kg/100km, g/km, mg/km, lb/100mi, oz/100mi, lb/mi, oz/mi, kg/mi, g/mi - used for emissions testing, CO₂ reporting, and heavy vehicle fuel tracking
Molarity Converter
Convert between concentration units - Molar, mM, μM, nM, pM, fM, mol/m³, mol/mL - for chemistry, biochemistry, pharmacology, and analytical science
Radiance/Irradiance Converter
Convert between W/m², mW/cm², BTU/hr·ft², cal/cm²·min, erg/cm²·s, and solar flux units. Essential for optics, solar energy, and environmental science.
Moment of Inertia Converter
Convert between moment of inertia units including kg·m², lb·ft², and more. Essential for mechanical engineering and rotational dynamics.
Thermal Resistance Converter
Convert thermal resistance and R-values between K/W, m²·K/W (RSI), h·ft²·°F/BTU (US R-value), h·°F/BTU, and caloric units
Sound Converter
Convert sound pressure (Pa ↔ dB SPL), sound intensity (W/m² ↔ dB SIL), sound power (W ↔ dB SWL), and level ratios (dB ↔ bel ↔ neper ↔ centibel)
Pipe Volume Calculator
Calculate pipe internal volume, weight, and flow rate. Multi-segment support with liters, gallons, and cubic meter outputs.
Prefixes Converter
Convert between all 25 SI prefixes - from quecto (10⁻³⁰) to quetta (10³⁰) - including the 2022 CGPM additions ronna, quetta, ronto, and quecto
Add Watermark to PDF
Add text or image watermarks to your PDF files
Image Meta Information
View complete image metadata: GPS location, capture time, camera details, lens, and edit history
Duplicate Line Remover
Remove duplicate lines from your text
Word Count Target Calculator
Plan how to reach your word count target
Force Converter
Convert between 16 force units - Newtons, lbf, kgf, kip, dyne, poundal, tonne-force, and more - for physics, engineering, and construction
Mass Flux Density Converter
Convert mass flux density units - kg/(m²·s), lb/(ft²·h), g/(cm²·s), g/(cm²·min), t/(m²·h), and more - essential for mass transfer analysis, membrane filtration, and chemical engineering
Surface Current Density Converter
Convert between 24 current density units - A/m², A/cm², A/mm², mA/cm², A/in², abA/cm², statA/cm² - for electrical engineering, electrochemistry, and electromagnetics
Environmental Dose Converter
Convert between environmental dose units including rad, gray, sievert, and rem. Essential for radiological protection, environmental monitoring, and health physics.
Angular Acceleration Converter
Convert between angular acceleration units including rad/s², deg/s², and more. Essential for mechanical engineering and rotational dynamics.
Thermal Expansion Converter
Convert linear thermal expansion coefficients between K⁻¹, °C⁻¹, °F⁻¹, ppm/K, ppm/°C, ppm/°F, μm/(m·K), and mm/(m·K)
Internal Link Suggestion Tool
Get suggestions for internal linking opportunities
Radiation Activity Converter
Convert between radioactivity units - Becquerel, Curie, MBq, GBq, μCi, pCi, Rutherford, dpm - for nuclear medicine, radiation safety, and radiochemistry
Matrix Unit Converter
Apply unit conversions and normalizations to 2×2, 3×3, or 4×4 matrices. Computes determinant, trace, rank, Frobenius norm, eigenvalues (2×2), inverse, and transpose. Essential for linear algebra and engineering.
Digital Image Resolution Converter
Convert image resolution between DPI, PPI, LPI, DPCM, dots/mm, dots/m, pixels/cm, pixels/mm, dots/foot, and dots/yard
Electric Potential Converter
Convert electric potential (voltage) between volt, millivolt, microvolt, nanovolt, pikovolt, kilovolt, megavolt, gigavolt, abvolt, and statvolt
Surface Tension Converter
Convert surface tension between N/m, mN/m, μN/m, J/m², mJ/m², dyn/cm, erg/cm², lbf/ft, lbf/in, and pdl/ft
Current Converter
Convert electric current between ampere, mA, μA, nA, pA, kA, MA, GA, abampere, and statampere
Electric Resistance Converter
Convert electric resistance between ohm, milliohm, microohm, nanoohm, kilohm, megohm, gigohm, teraohm, abohm, and statohm
Image Alt Text Checker
Check image alt text for accessibility and SEO
Bullets to Paragraph
Convert bullet points back into flowing paragraph text
Specific Volume Converter
Convert specific volume (m³/kg, ft³/lb, L/kg, cm³/g) and volume charge density (C/m³, μC/cm³, mC/L) - dual-tab converter for thermodynamics, HVAC engineering, and electrostatics
Photon Flow Rate Converter
Convert photon flow rate across 18 units - photons/s, kph/s, Gph/s, ph/ns, ph/µs, Einstein/s, µE/s - covering SI prefixes, sub-second intervals, longer time periods, and molar units
Surface Charge Density Converter
Convert surface charge density units - C/m², µC/cm², mC/m², nC/m², C/in², statC/cm², abC/cm², e/nm², and more - essential for electrical engineering, electrostatics, and semiconductor physics
Radiation Converter
Convert between radiation dose equivalent units - Sievert, mSv, μSv, Rem, mrem - for radiation protection, medical imaging, and nuclear safety
Soil Moisture Converter
Convert between soil moisture units including volumetric, gravimetric, and saturation percentage. Essential for agriculture, geoscience, soil science, and environmental monitoring.
Illumination Converter
Convert illuminance between lux, kilolux, millilux, microlux, lm/m², foot-candle, phot, milliphot, lm/ft², and nox
Charge Converter
Convert electric charge between coulomb, mC, μC, nC, pC, kC, abcoulomb, statcoulomb, faraday, ampere-hour, mAh, and elementary charge
Electrostatic Capacitance Converter
Convert capacitance between farad, millifarad, microfarad, nanofarad, picofarad, femtofarad, kilofarad, abfarad, and statfarad
Radiation Absorbed Dose Converter
Convert between absorbed radiation dose units - Gray, rad, milliGray, cGy, erg/g, kGy - for radiation therapy, nuclear safety, and food irradiation
Electric Resistivity Converter
Convert electrical resistivity between Ω·m, mΩ·m, μΩ·m, nΩ·m, Ω·cm, μΩ·cm, Ω·in, Ω·ft, and Ω·cmil/ft
Electric Conductivity Converter
Convert electrical conductivity between S/m, mS/m, μS/m, kS/m, MS/m, S/cm, mS/cm, μS/cm (EC), and S/mm
Gravitational Units Converter
Convert between gravitational acceleration units - g, m/s², Gal, mGal, ft/s², milli-g, micro-g - for geophysics, aerospace, and accelerometer engineering
Luminance Converter
Convert luminance between cd/m² (nit), stilb, lambert, millilambert, apostilb, foot-lambert, cd/ft², cd/in², and skot
Electric Field Strength Converter
Convert electric field strength between V/m, kV/m, MV/m, V/cm, kV/cm, V/mm, kV/mm, V/in, kV/in, V/ft, kV/ft, and statV/cm
Inductance Converter
Convert inductance between henry, millihenry, microhenry, nanohenry, picohenry, kilohenry, abhenry, and stathenry
Lumber Volume Converter
Convert between 17 lumber and timber volume units - board feet, MBF, cord, cunit, hoppus foot, stere, Petersburg Standard, and metric/imperial - for woodworking, construction, and forestry
Magnetomotive Force Converter
Convert between magnetomotive force units - Ampere-turn, Gilbert, Kiloampere-turn, Biot - for magnetic circuit design, transformer and motor engineering
Electric Conductance Converter
Convert electrical conductance between siemens, millisiemens, microsiemens, nanosiemens, kilosiemens, mho, mmho, abmho, and statmho
Magnetic Flux Converter
Convert magnetic flux between weber, milliweber, microweber, nanoweber, kiloweber, volt-second, maxwell, kiloweber, megamaxwell, and unit pole
Radiation Exposure Converter
Convert between radiation exposure units - Roentgen, Coulomb/kg, mC/kg, μC/kg, mR, μR - for X-ray dosimetry, radiation safety, and medical physics
Magnetic Field Strength Converter
Convert magnetic field strength (H-field) between A/m, mA/m, kA/m, MA/m, A/cm, A/mm, A/in, oersted, millioersted, and gilbert/cm
Blackbody Radiation Peak Converter
Calculate peak wavelength and frequency from blackbody temperature using Wien's displacement law - bidirectional T↔λ with spectrum region indicator
Permeability Converter
Convert magnetic permeability between H/m, mH/m, μH/m, nH/m, T·m/A, Wb/(A·m), N/A², V·s/(A·m), and multiples of μ₀
Luminous Intensity Converter
Convert luminous intensity between candela, millicandela, kilocandela, lm/sr, candlepower, Hefnerkerze, and carcel
PDF Metadata Viewer
View and analyze PDF metadata and document properties
PDF Page Counter
Count the number of pages in any PDF document