Date Difference Calculator

Find out exactly how many days, weeks, months and years are between two dates.

Start date

End date

How it works

This calculator finds the exact span between two calendar dates, showing both a calendar-accurate breakdown (years, months, days) and the total number of days and weeks. It correctly handles varying month lengths and leap years.

Common uses

Counting down to a wedding, deadline, or event
Calculating contract or lease durations
Working out someone's age or a project's duration
Legal and medical calculations that require an exact day count