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Date Difference Calculator
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Date difference in years/months/days/hours/minutes/seconds/business days. Age calculator from birthdate. Add or subtract days/weeks/months/years from any date.
How to Use
- 1Select the Date Difference tab and enter two dates using the date pickers
- 2Click Calculate Difference to see the gap in years, months, days, total days, weeks, hours, minutes, seconds, and business days
- 3Switch to Add / Subtract tab: enter a start date, an amount, and a unit (days/weeks/months/years), then click Add or Subtract
- 4Age Calculator tab: enter your birthdate and click Calculate Age to see your exact age
- 5Business days count only Monday–Friday, excluding weekends
Features
- Difference in years, months, days, total days, weeks, hours, minutes, seconds
- Business days (Mon–Fri) counter
- Age calculator from birthdate
- Add or subtract days/weeks/months/years from any date
- Week number of year shown
- 100% browser-based
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