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Date Difference Calculator

Count the years, months, days and weekdays between two dates, or add days to a date.

How it works

  1. 1Pick two dates.
  2. 2Read the difference.
  3. 3Optionally add or subtract days.

Features

  • Years, months and days, plus total days, weeks and hours.
  • Weekdays (Monday to Friday).
  • Add or subtract any number of days.
  • Private: runs in your browser; nothing is uploaded.

Frequently asked questions

How are months counted?

By the calendar: 31 January plus one month is the end of February.