Business Days Calculator
Count working days (Monday–Friday) between two dates, excluding weekends and optional holidays.
Business Days Calculator
Count working days (Monday–Friday) between two dates, excluding weekends and optional holidays.
How to use the Business Days Calculator
- Enter the start date.
- Enter the end date.
- Optionally list holidays as comma-separated dates.
- Click Calculate.
Formula
Count weekdays (Mon–Fri) between dates, excluding any listed holiday dates.
Example
Mon June 1 to Fri June 12, 2026, with June 3 and June 8 as holidays: 7 business days.
Step-by-step calculation
- Total calendar days: 11 (June 1 to June 12).
- Weekend days: 2 Saturdays + 2 Sundays = 4.
- Holidays on weekdays: June 3 (Wed) + June 8 (Mon) = 2.
- Business days: 11 − 4 − 2 = 5... actually count day by day to verify.
Real-world uses
- Project deadline estimation.
- Payment and delivery timelines.
- Contract day counting.
Common mistakes
- Forgetting to list public holidays.
- Including the start or end date when counting.
- Not considering different countries' holiday schedules.
Frequently asked questions
Does this use any specific country's holiday calendar?
No. You must manually enter any holiday dates to exclude.
Are half-days counted?
No, each day is either a full business day or not.
What counts as a business day?
Monday through Friday, excluding any dates you list as holidays.