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Date Calculator

Find the number of days between two dates, add or subtract time from a date, calculate an age or count down to an event.

Four date tools

How dates are counted

The calculator counts calendar days from the start date to the end date, so the end date itself is not counted twice. Weekdays are Monday to Friday and do not remove public holidays. When you add months and the target month is shorter, the result falls on the last day of that month (January 31 plus one month is February 28 or 29).

Examples

From January 1 to March 1 in a non-leap year is 59 days. Adding 30 days to a date moves it to the same weekday plus two days after four full weeks.

Frequently asked questions

How do I count the days between two dates?

Enter both dates on the Between tab. The result shows total days, weeks, years/months/days and weekdays.

Does it include the last day?

No. It counts the days between the dates. Add one day if you want to include both the start and end dates.

Does it handle leap years?

Yes. All calculations use the real calendar.

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