Days between dates
Enter a start and end date to get the exact number of days, weeks, and months between them — all in your browser.
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Frequently asked questions
How do I calculate the number of days between two dates?
Subtract the earlier date from the later one and count the days. This tool does it precisely using real calendar dates, so leap years and different month lengths are handled correctly.
Does it include both the start and end date?
It counts the gap between the two dates (end minus start). If you also want to count the start day itself, add one — the result shows both interpretations.
Can I count backwards?
Yes — if the end date is before the start date, the number of days is shown as a negative gap.
Is my data uploaded?
No. TryCalculatingNow computes in your browser. Your dates never leave your device.