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Working days calculator
Count Monday to Friday days between two dates.
Quick answer
Working days are the Monday to Friday days in a period, with any weekday holidays taken off. Formula: Working days = Monday to Friday days from the start date to the end date, both included, minus holidays you enter. January 2026 has 22 working days (Monday to Friday) and 9 weekend days.
Read the guide: How to find the number of days between two dates
Working days
22
- Calendar days
- 31
- Weekend days (Saturday and Sunday)
- 9
Saturdays and Sundays are treated as days off. Enter the number of public holidays that fall on weekdays to subtract them.
How is working days calculated?
The calculator counts whole weeks as 5 working days each, then checks the leftover days one by one.
It does not know your local holidays, so count the holidays that fall on a weekday and enter them to subtract.
Both the start and the end date are included in the count.
What is the formula for working days?
- Working days = Monday to Friday days from the start date to the end date, both included, minus holidays you enter
Can you show a worked example of working days?
1 to 31 January 2026: 31 calendar days, 9 of them Saturdays or Sundays, leaving 22 working days.
How many working days are in each month of 2026?
Monday to Friday, before any public holidays.
| Month | Calendar days | Working days |
|---|---|---|
| January | 31 | 22 |
| February | 28 | 20 |
| March | 31 | 22 |
| April | 30 | 22 |
| May | 31 | 21 |
| June | 30 | 22 |
| July | 31 | 23 |
| August | 31 | 21 |
| September | 30 | 22 |
| October | 31 | 22 |
| November | 30 | 21 |
| December | 31 | 23 |
Common questions
Does it include the start and end dates?
Yes, both are counted if they are weekdays.
Does it know public holidays?
No. Holidays differ by country and state, so enter how many fall on weekdays and they are subtracted.
What if my week is Sunday to Thursday?
This tool assumes Saturday and Sunday are the days off.
How many working days are in a year?
About 260 to 261, before holidays.