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Date Difference Calculator
Count the days, weeks and months between two dates.
365 days
Days365
Weeks52.1
Months (approx)12
Years (approx)1
Formula / method
days = |end − start| (calendar-accurate)
Examples
2025-01-01 → 2026-01-01
365 days
365 days
2026-01-01 → 2026-03-01
59 days
59 days
How to use
Enter your values above — the result updates instantly as you type. Everything is computed locally in your browser, so it is fast and private.
FAQ
Are the start and end days both counted?
This counts the number of nights between the two dates. Add one if you need to include both the first and last day.