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Date Calculator

Days between dates, or add and subtract days.

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Computed in your browser.

How it works

In difference mode, enter two dates and get the exact gap in days, weeks and months. In add/subtract mode, enter a start date and a number of days to find the resulting date.

Tip: use a negative number to count backward from a date.

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Good to know

FAQs

How do I count days between dates?

Enter a start date and an end date. The result is the exact count in days, weeks and months.

Can I add days to a date?

Yes. Switch to add/subtract mode, enter the number of days, and get the resulting date. Negative values go backward.

Does it handle leap years?

Yes. Real calendar dates, so every month and leap year is accounted for.

Is the end date included?

It counts the interval between the two dates. Add one day if you need to include both the start and end day in the count.

Is anything stored?

No. Everything runs in your browser.