Free Business Days Calculator
Count working days between two dates.
What is the Business Days Calculator?
"Five business days" sounds simple until you have to count them across a couple of weekends and a bank holiday. Deadlines, delivery windows, payment terms and notice periods are almost always quoted in working days, not calendar days — and getting it wrong by a day matters.
This calculator counts the working days between two dates for you, excluding weekends and any holidays you add. It runs entirely in your browser.
Last updated: Sep 1, 2026
What does this tool do?
You pick a start and end date, and it counts the Monday-to-Friday days between them (inclusive of both ends), skipping Saturdays and Sundays. Add your public holidays, one per line, and those are excluded too. You also get a breakdown: total calendar days, weekend days and holidays.
It's the quick, reliable way to answer 'what date is 10 business days from now?' in reverse — how many working days sit between two dates.
Key features
Weekends excluded
Counts Mon–Fri only.
Holiday support
Add your own public holidays.
Full breakdown
Total, weekend and holiday days too.
Inclusive counting
Both start and end dates count.
Private
Runs in your browser.
Example
Common use cases
- Project managers — Plan deadlines in working days.
- HR & payroll — Count notice periods and leave.
- Finance — Apply net-payment terms accurately.
- Logistics — Estimate delivery windows.
- Legal — Count statutory working-day periods.
- Anyone — Answer 'how many working days?' exactly.
Benefits
- No manual calendar counting.
- Handles weekends and holidays.
- Shows the full day breakdown.
- Free and private.
Tips
- Add your country's or region's public holidays — they vary, and the tool can't assume them.
- Both the start and end dates are included; if your period is exclusive of the start, add a day.
- For 'X working days from a date', adjust the end date until the business-day count matches.
- Watch for regional holidays (e.g. bank holidays) that differ within a country.
- Half-day holidays aren't handled — count them manually if they apply.
Common mistakes to avoid
Forgetting public holidays
Fix: Weekends are automatic, but holidays must be added or the count runs high.
Off-by-one on inclusivity
Fix: Both ends are counted; adjust by a day if your period excludes the start or end.
Assuming holidays are built in
Fix: They differ by country/region, so you enter the ones that apply to you.
Ignoring regional differences
Fix: Check that the holidays you add match the specific region involved.
How it works
- 1
Pick two dates
Start and end.
- 2
Add holidays
Optional, one date per line.
- 3
See working days
Business days plus a breakdown.
Frequently asked questions
Yes — it counts Monday to Friday and excludes Saturdays and Sundays. Both the start and end dates are included in the count.
Yes — add your public holidays (one date per line) and they're subtracted from the business-day total.
No — holidays vary by country and region, so you enter the ones that apply to you for an accurate figure.
Yes — it counts Monday to Friday and excludes Saturdays and Sundays. Both the start and end dates are included.
Yes — add them one date per line and they're subtracted from the business-day total.
No — holidays vary by country and region, so you enter the ones that apply.
Yes — free, no sign-up.
Conclusion
Count working days between two dates without wrestling a calendar — weekends are handled automatically and you add the holidays that apply to you. Mind the inclusive counting and regional holidays, and your deadlines and terms will always land on the right day.