About the Date Difference Calculator
Find how long it is between two dates in years, months and days, as total days, as weeks and days, and as working days from Monday to Friday. It is useful for project plans, notice periods and countdowns.
How to use it
- Choose a start date and an end date.
- Tick “Count the end date too” if both days should be included.
- Read the difference, total days and working days.
Frequently asked questions
- Does it count public holidays?
- No. Working days exclude Saturdays and Sundays only, because holidays differ by country and region.
- What if the end date is earlier?
- The tool swaps the dates and tells you it did so.
Private by design: this tool runs in your browser. Read the privacy policy.