Modulo Calculator

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A four-mode modulo calculator. Basic mode computes dividend mod divisor and shows the remainder, quotient, and full equation - plus whether the result is even or odd. Clock arithmetic mode applies modulo 12 or 24 to times and angles. Modular exponentiation mode computes (base^exponent) mod m using fast exponentiation with BigInt for arbitrarily large numbers. The remainder table mode shows x mod n for x from 0 to 20, revealing the repeating pattern. Useful for programmers working with hash functions, cryptographers studying RSA, and students learning number theory.

How to Use

  1. 1Select a mode: Basic, Clock Arithmetic, Modular Exponentiation, or Remainder Table
  2. 2Basic mode: enter a dividend and divisor to get the remainder, quotient, and full equation
  3. 3Clock mode: enter a value and choose 12 or 24-hour format
  4. 4Mod Expo mode: enter base, exponent, and modulus for (base^exp) mod m
  5. 5Remainder Table: enter a modulus to see x mod n for x from 0 to 20

Features

  • 4 modes: Basic, Clock Arithmetic, Modular Exponentiation, Remainder Table
  • BigInt support for large modular exponentiation
  • Clock mode for 12-hour and 24-hour applications
  • Remainder table for x mod n from 0 to 20
  • Even/odd indicator for result
  • 100% browser-based

Frequently Asked Questions

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