Yes. The calculator correctly handles leap years including Feb 29.

Yes. Enter a base date and add or subtract any number of days to get a future or past date.

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Date Calculators

Calculate duration between two dates, or add/subtract days

Start Date

End Date

Reference Date

Value

Unit

Direction

Add (+) Subtract (−)

Frequently Asked Questions

Are leap years handled automatically?

Yes. The calculator uses the JavaScript Date object to correctly handle leap years (Feb 29).

Can I find the number of weeks between two dates?

Divide the number of days by 7. For example, 28 days apart = 4 weeks.

Can I add or subtract a number of days from a date?

Yes. Enter a base date and add or subtract any number of days to calculate a future or past date.