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Date Difference Calculator

Calculators · Done in 3 steps

Stays on your deviceFree · No sign-up
  1. 1Pick two dates
  2. 2
  3. 3
Loading tool…

About

Count the years, months and days between two dates, plus total days, weeks and business days excluding weekends and your own holidays.

How to use it

  1. 1Pick a start and end date (or use the Today buttons).
  2. 2Tick “Include the end date” if both days should count.
  3. 3Optionally paste holidays to exclude from business days.
  4. 4Read the years/months/days breakdown and the totals.
You give
Two dates, optional holiday list
You get
Years, months, days; total days, weeks, months; business and weekend days
Good to know
Business days are Monday–Friday; public holidays are only excluded if you list them. Month counting clamps at month ends (31 Jan + 1 month = 28/29 Feb). Every input is saved in the page URL, so you can bookmark or share a result.
Privacy
Processed on your device. Nothing is uploaded, stored or logged.
Last tested
2026-10-28

FAQ

How are months counted when the start date is the 31st?

If the month has no matching day, its last day is used. So 31 January to 28 February 2023 is exactly one month, and to 1 March is one month and one day.

Does daylight saving time affect the count?

No. The calculator works with calendar dates, not clock times, so DST changes never add or remove a day.

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