Business Days Calculator
Count business days (Mon-Fri) between two dates
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Business days (Mon-Fri)—
Calendar days total—
Complete work weeks (approx.)—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- 2026-09-01 to 2026-09-30 → 22 business days, 30 calendar days, ~4.4 work weeks
- Sep 1 – Sep 30, 2026 → 22 business days out of 30 calendar days (≈ 4.4 weeks)
Formula
A business day is any Mon-Fri between the two dates (inclusive). Calendar days is the total. Work weeks ≈ business days ÷ 5.
About Business Days Calculator
Count business days (Mon-Fri) between two dates. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is this tool free to use? +
Yes, it is completely free with no registration or download required.
Is my data private? +
Yes. Everything is processed locally in your browser. Nothing is uploaded or stored on our servers.
Does it work on mobile? +
Yes, it works on any device — phone, tablet, or desktop.