About the Working Days Calculator
Count the working days between two dates, or add a number of business days to a date, excluding weekends and your own list of public holidays. Supports Friday–Saturday weekends.
Key features
- Business days between two dates
- Add working days to a date
- Custom weekends: Sat–Sun, Fri–Sat, Sunday only, Friday only or none
- Exclude public holidays
- Breakdown of calendar, weekend and holiday days
- Start and end dates included
Count business days, not calendar days
Project timelines, delivery estimates, payroll, leave requests and legal deadlines often count working days only. This calculator skips weekends and any holidays you enter.
Examples (Saturday & Sunday weekend)
| Period | Calendar days | Working days |
|---|---|---|
| 1–31 Oct 2026 | 31 | 22 |
| 1–31 Dec 2026 (25 Dec holiday) | 31 | 22 |
| 10 working days after 20 Oct 2026 | — | Tue, 3 Nov 2026 |
Weekend conventions
| Weekend | Common in |
|---|---|
| Saturday & Sunday | Most of the world |
| Friday & Saturday | Several Middle Eastern countries |
| Friday only | Iran |
| Sunday only | Some businesses and six-day work weeks |
Weekend conventions change from time to time, so check your local rules.
Tips for planning
- Add buffer days for approval and review steps.
- Remember regional holidays, which differ between states and provinces.
- Check cut-off times: a request after 5 pm often counts from the next working day.
Related calculators
Count all days with the Date Difference Calculator, or calculate hours worked with the Time Duration Calculator.
How to use the Working Days Calculator
- Enter your numbers in the fields above. Units and options can be changed at any time.
- The result updates instantly as you type; there's no calculate button to press.
- Check the breakdown under the main result for the details behind the number.
- Adjust the inputs to compare scenarios, for example a different rate or term.