Date Difference Calculator

Count the exact time between two dates — in days, weeks, months and years.

Start Date

End Date

Difference

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Total days	0
Total weeks	0
Total months (approx)	0

How it works

Enter a start and end date and the calculator returns the full difference broken into years, months and days, plus the totals in days and weeks. Leap years and varying month lengths are handled automatically.

Common uses

Count days until a deadline, event or holiday.
Work out how long ago something happened.
Calculate notice periods or project durations.