Date Difference Calculator

Count the days, weeks, and months between two dates.

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total days

Count the time between two dates

Whether you are counting down to an event, working out a project length, or checking how long ago something happened, this tool gives you the exact gap between any two dates. It returns the total number of days, plus a breakdown in weeks.

Pick a start date and an end date, and the calculator handles the awkward parts, different month lengths and leap years, automatically. There is no need to count on a calendar.

Common questions

Does it include both the start and end day?
It counts the number of days between the two dates.
Can the end date be before the start?
For a clear result, set the earlier date as the start.