Date Difference Calculator
Count the days, weeks and working days between two dates, plus the calendar difference in years and months.
Your result will appear here as soon as you add some input.
How to use it
- 1Enter your values in the fields above.
- 2The answer and the working appear immediately below.
- 3Check the working to see the formula with your numbers substituted.
About the Date Difference Calculator
Two different answers are both correct here. The day count is exact; the calendar difference in years, months and days follows how people naturally describe a gap, and the two disagree because months vary in length.
Working days count Monday to Friday and take no account of public holidays, which differ by country and by year.
Dates are handled in UTC so a daylight-saving change cannot add or lose a day in the middle of a range.
Questions people ask
Is your figures uploaded to a server?
No. This tool runs entirely in your browser using standard web APIs, so your figures never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.