Business days between dates
Work out how many working days (Monday to Friday) are between two dates — useful for delivery estimates, project deadlines or notice periods.
Result
Business days
How to use this calculator
- Enter the start date.
- Enter the end date.
- Read the number of business days between them.
Assumptions
- Counts Monday–Friday as business days — does not exclude public holidays, since these vary by country and region.
Technical details: what the fields mean
- Start date
startDate - The earlier date.
- End date
endDate - The later date.
Methodology
Counts each weekday (Monday–Friday) in the range from the start date up to (but not including) the end date.
Worked example
Thu 1 Jan 2026 to Sun 11 Jan 2026
Inputs: startDate=2026-01-01, endDate=2026-01-11
Result: 7 business days
Practical guidance
- Subtract any known public holidays from the result manually, since these aren't included in this calculation.
Common mistakes
- Forgetting to subtract public holidays for a region-specific working-day count — this calculator only excludes weekends.
FAQs
Does this exclude public holidays?
No — it excludes weekends (Saturday/Sunday) only. Subtract known public holidays manually for your region.