Calculator
Date Difference Calculator
Compare two dates to get the number of days and the ISO week.
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How to count the days between two dates
- Choose the first date and the second date.
- Click Calculate.
- Read the number of days and the ISO week of the later date.
The order of the two dates does not matter. 12 October 2026 and 18 October 2026 are 6 days apart, and the later date is in ISO week 42.
Frequently asked questions
Does the count include both dates?
No. It is the number of days from the earlier date to the later date. The same date twice is 0 days.
Are the dates uploaded?
No. The calculation runs in your browser.
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