Working days calculator: business days between two dates
Count business days for deadlines, notice periods and delivery estimates. You can add your own holidays.
How to use this calculator
- Pick the start and end dates.
- Choose your weekly days off.
- Optionally list holidays, one date per line in the form YYYY-MM-DD.
- Read the working days, and how many weekends and holidays were removed.
Worked examples
Example 1
1 to 31 October 2026, Saturday and Sunday off, holidays on 2 and 20 October.
You enter
| Start date | 2026-10-01 |
|---|---|
| End date | 2026-10-31 |
| Weekly days off | Saturday and Sunday |
| Holidays to leave out (optional) | 2026-10-02, 2026-10-20 |
You get
| Working days | 20 |
|---|---|
| Calendar days (both dates counted) | 31 |
| Weekly days off | 9 |
| Holidays removed (on working days) | 2 |
Example 2
The same month with only Sunday off.
You enter
| Start date | 2026-10-01 |
|---|---|
| End date | 2026-10-31 |
| Weekly days off | Sunday only |
| Holidays to leave out (optional) | 2026-10-02, 2026-10-20 |
You get
| Working days | 25 |
|---|---|
| Calendar days (both dates counted) | 31 |
| Weekly days off | 4 |
| Holidays removed (on working days) | 2 |
How it works
Both the start and end dates are counted if they are working days. A holiday that falls on a weekend is not counted twice.
Official holiday lists change every year and differ by state and by exchange, so type the ones that apply to you.
Formula
Working days = days in the range minus weekly days off minus listed holidays on working days.
Common questions
Does it know public holidays?
No, you enter them.
Is the end date counted?
Yes if it is a working day.
Alternate Saturdays?
Not supported yet; list the Saturdays you work as a separate calculation.
Calculators give estimates for learning and planning. They are not financial, tax, legal or medical advice, and results depend entirely on the numbers you enter. Check rates, limits and rules with an official source or a qualified professional before acting.