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Date Calculator

Find how long it is between two dates, in years, months and days, or which date it will be after adding or taking away some time.

Runs in your browser · No uploads

Time between two dates

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Add or subtract time

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Dates are counted in whole calendar days, so daylight saving time changes don't shift the result. Business days are Monday to Friday; public holidays are not taken off.

  • Nothing leaves your device
  • No server-imposed size limits
  • No sign-up, no watermark
  • Free

How to count the days between dates

  1. Choose a start and an end date (or use today).
  2. Tick "count the end date too" if both days should count, as for a holiday.
  3. Read the difference, total days, weeks and business days.

Good to know

  • Adding a month keeps the day of the month where it can: 31 January plus one month is 28 or 29 February.
  • Business days are Monday to Friday. Public holidays differ by country and are not taken off.
  • Days are counted as whole calendar days, so a daylight saving time change never adds or removes an hour.
  • Leap years are taken into account.

Frequently asked questions

Why does the end date sometimes count and sometimes not?

From Monday to Friday is 4 days apart, but if you count both Monday and Friday (like days of a trip), it is 5 days. The checkbox switches between the two.

Is anything sent anywhere?

No. The calculation happens in your browser as you type; nothing is sent anywhere.