Working Days Calculator
Count working days (weekdays) between two dates with a configurable weekend, such as Saturday–Sunday or Friday–Saturday.
Your inputs
Results
Working days (inclusive)
22
- Weekend days
- 9
- Calendar days (inclusive)
- 31
✓Exact calculation — rounded only for display
Notes for this result
- Public holidays are not excluded here — use the Business Days Calculator to subtract holidays.
What this calculator does
Different countries observe different weekends. Choose yours to count working days correctly.
Formula and method
Working days = calendar days in the range (inclusive) − weekend days
Worked example
Calculated by this tool with its default inputs:
Inputs
- Start date: 2026-01-01
- End date: 2026-01-31
- Weekend days: Saturday & Sunday
Results
- Working days (inclusive): 22
- Weekend days: 9
- Calendar days (inclusive): 31
How to read the results
Public holidays are not excluded here — use the business days calculator for that.
Assumptions and limitations
- Date-only arithmetic on the Gregorian calendar; results do not depend on your time zone or daylight-saving changes.
Questions
Which weekend should I choose?
Saturday–Sunday is common internationally; Friday–Saturday is used in several Middle Eastern countries.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy