How the calculation works
The calculator goes through the calendar day by day and counts the days that are Monday to Friday and not in your list of days off.
Working days = calendar days − weekend days − listed days off
In "between" mode the start and end date are both included. In "add" mode the count starts on the day after the start date.Worked examples
Between Monday 2 November and Friday 13 November 2026.
- That is 12 calendar days.
- Two weekend days (7–8 November) are left out.
- Result: 10 working days.
Add 5 working days to Thursday 12 November 2026.
- Friday 13 November is day 1.
- The weekend is skipped; Monday 16 to Thursday 19 November are days 2 to 5.
- Result: Thursday 19 November 2026.
What this calculator does not include
- Public holidays, unless you list them yourself.
- Half days, shift work and part-time schedules.
- Countries where the weekend is not Saturday and Sunday.
Amounts are rounded for display only; the calculation itself is not rounded. Results are estimates for information, not financial advice. Last updated: 12 November 2026.
Frequently asked questions
Which days count as working days?
Monday to Friday. Saturdays and Sundays are left out. Public holidays differ per country and region, so they are only left out if you list them in the days off field.
Are the start and end date counted?
In "Working days between" both dates are counted when they fall on a working day. In "Add working days" the start date is not counted: adding 1 working day to a Monday gives Tuesday.
How do I leave out public holidays?
Type the dates in the days off field as year-month-day, separated by commas, for example 2026-12-25, 2026-12-26. Days off that fall on a weekend are not counted twice.
Can I use this for a deadline or delivery date?
Yes. Use "Add working days" with the number of working days and your start date. Check the result against any contract, because some agreements count Saturdays or use other holiday lists.
Does it work for countries with a different weekend?
No. The weekend is fixed at Saturday and Sunday. For other weekends, use the count of calendar days from the date calculator and subtract your own days off.