Date Difference — Free Online Tool

Find the duration between two calendar dates as days and other useful units for planning, reporting, or milestones.

This private tool runs locally in your browser. Your text is never uploaded or sent to a server.

How to use Date Difference

Enter the start date
Enter the end date
Read the calculated interval

Example

The difference between 1 January and 8 January is seven elapsed days.

Useful tips

Distinguish elapsed days from inclusive date counts
Calendar months have unequal lengths

JavaScript enables the interactive tool above.

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