Days Between Dates Calculator
Work out the exact difference between two dates in days, weeks, months, and business days.
How it works
Choose a start date and an end date. We calculate the exact difference in days, weeks, approximate months, and business days (Monday through Friday) — accurate across leap years and month boundaries.
Examples
Useful for figuring out how long a project has been running, how many business days are left before a deadline, or how many days it's been since (or until) any two dates.
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Frequently asked questions
- Does this include the start and end date?
- The total is the number of full days between the two dates. For example, from Monday to Wednesday is 2 days.
- What counts as a business day?
- Business days are Monday through Friday. This tool doesn't account for public holidays, since those vary by country.
- Does it handle leap years correctly?
- Yes. All calculations are based on real calendar dates, so leap years like February 29th are handled automatically.
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