Business Days Calculator
Count the number of weekdays (Monday to Friday) between two dates, inclusive of both endpoints.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter a start date and an end date to count the number of weekdays (Monday-Friday) between them.
Your result
18
Business days
Weekend days6
Total calendar days24
AI explanation
Formula
Counts Monday-Friday days in the range, inclusive of both the start and end dateWorked example
2026-09-07 to 2026-09-30
| Field | Value |
|---|---|
| Start date | 07-09-2026 |
| End date | 30-09-2026 |
| Business days | 18 |
| Weekend days | 6 |
| Total calendar days | 24 |
Assumptions
- Excludes Saturdays and Sundays only — public holidays are not excluded, since holiday calendars vary by country and region with no single authoritative source. Adjust the result manually for known holidays in your area.
Frequently asked questions
Does this exclude public holidays?
No — only Saturdays and Sundays are excluded. Public holidays vary by country, state, and year with no single authoritative source, so subtract known holidays from the result manually.
Are the start and end dates both included in the count?
Yes — if both fall on weekdays, they're each counted as one business day.
Is there a version of this with a different name?
See the Working Days Calculator for the exact same calculation under a different common search term.