Date Difference Calculator

Date Difference Calculator

Find the exact number of days, weeks and months between any two dates.

About this tool

The Date Difference Calculator measures the gap between two dates in years, months, weeks and days, plus total days. Useful for counting down to events, tracking durations, project timelines and deadlines. Pick a start and end date to get an instant, accurate breakdown — all in your browser.

How to use the Date Difference Calculator

  1. 1

    Pick a start date

    Select the first date.

  2. 2

    Pick an end date

    Select the second date.

  3. 3

    View the difference

    See days, weeks and months between them.

Frequently Asked Questions

Does it include the end date?

You can toggle whether the end date is counted; by default we show the difference between the two dates.

Can I calculate future dates?

Yes, pick any past or future dates to see the duration between them.

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