Date Calculator
Calculate the difference between two dates in days, weeks, and months.
About This Tool
The Date Calculator computes the exact difference between two dates in days, weeks, working days, months, and years. Simply pick a start date and an end date to instantly see the full breakdown.
Working days are counted as Monday through Friday, excluding weekends. The tool uses JavaScript's native Date API and runs entirely in your browser β no data is sent to any server.
How to Use
- Select the From date using the date picker.
- Select the To date.
- Click Calculate to see the difference in days, weeks, working days, months, and years.
- Click the β button to swap the two dates if needed.
Use Cases
Project managers calculate the number of working days between a kickoff and deadline. HR teams compute notice periods and probationary end dates. Freelancers invoice clients based on the number of days worked. Students count down days to an exam or graduation.
FAQ
- Are public holidays excluded from working days? β No. Working days count MondayβFriday only; public holidays are not excluded since they vary by country.
- Can I calculate a date in the past? β Yes. Both past and future dates are supported. Swapping the From and To dates shows the same result.
- How are months counted? β Month differences are approximate (total days Γ· 30.44). For exact calendar month counts, use the Y/M/D breakdown.