Date difference
Days, weeks, months, years, and business days between two dates.
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Tool guide
Date difference: how it works
Practical information to understand the result and use this tool correctly.
About Date difference
A date difference tool measures the interval between two calendar dates. It can report total days, weeks, months, years, and often business days (Monday–Friday).
Leap years are included because the calculation uses the real Gregorian calendar. Local public holidays are usually not subtracted — they vary by country.
Useful for contracts, project deadlines, pregnancy weeks, and “how many days until” planning.
How to use it
- 1Select the start date.
- 2Select the end date.
- 3Read days, weeks, months and business days.
Frequently asked questions
- How do I calculate days between two dates?
- Pick start and end dates; the tool counts the interval. If you need the end day included as a full day, add one to total days.
- Does it subtract holidays?
- No. Business days here mean Monday–Friday only, not country-specific holidays.
- Does it handle leap years?
- Yes. February 29 is included when it falls in the range.