Working Days Calculator
Find business days between two dates.
About this calculator
The Working Days Calculator counts the business days between two dates. By default it excludes Saturdays and Sundays, and you can choose to include or exclude each of them and to count the end date.
It tells you the working days, the calendar days, the weekend days and the span in work weeks. The tool does not know public holidays, so subtract any that fall in the period from the result. It suits delivery estimates, notice periods, payment terms stated in working days and project plans.
How to use it
- Pick the Start Date and the End Date.
- Tick Exclude Saturdays and Exclude Sundays as needed.
- Tick Include end date if the last day counts.
- Read the working days, calendar days, weekend days and work weeks.
Calculation
The tool walks through each calendar day from the start up to the end date (and including it if ticked). A day counts as a working day unless it is an excluded weekday: Working days = Calendar days − Excluded weekend days. Public holidays are not removed.
Worked example
Monday 2 November 2026 to Friday 13 November 2026, end date not counted
| Working days | 9 |
| Calendar days | 11 |
| Weekend days | 2 |
| Work weeks | 1 week 4 days |
Ticking Include end date adds Friday 13 November, giving 10 working days. If 10 November is a public holiday, subtract one more.
Tips and common mistakes
- Subtract public holidays by hand. Check the list for your state or country.
- Some businesses work six days a week. Untick Exclude Saturdays to count them.
- Decide whether the start and end days count, and write it into the contract.
- For SLA deadlines, count from the next working day if the request arrives after hours.
- Use the Date Calculator to add working days to a start date, approximately.
Frequently asked questions
How do I count working days between two dates?
Count the Monday to Friday days in the span and remove any public holidays.
Does it exclude holidays?
No. Subtract them yourself.
Can I count Saturdays as working days?
Yes. Untick Exclude Saturdays.
Is the end date included?
Only if you tick Include end date.
How many working days are in a year?
About 260, before public holidays.
What are work weeks?
Working days divided by five.