Date Difference Calculator
How many days until a deadline, how old is a contract, how many working days are in a project? Enter two dates for an exact calendar difference, or add a number of days to a date. Public holidays are not included because they differ by country.
Add or subtract days
Runs entirely in your browser. Your input and files are not uploaded to any server.
How to use
- Choose a start and an end date.
- Decide whether to count the end date and which days are the weekend.
- Or use the second panel to add or subtract days from a date.
Examples
1 March to 31 May → 91 days, or 92 if both dates count.
Weekend set to Saturday–Sunday counts Monday to Friday only.
Privacy
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Frequently asked questions
How are months counted?
By calendar: from 31 January, one month later is the last day of February. The result shows years, months and days.
Are public holidays excluded?
No. Holidays vary by country and year, so subtract them yourself from the working-day count.