Business Days Calculator
Count working days (Monday–Friday) between two dates, inclusive.
Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026
Business days
1
Weekend days
0
Total days
1
Both the start and end date are included. Public holidays are not deducted — they vary by country.
What is a business days calculator?
A business days calculator counts the working days between two dates, skipping weekends (Saturday and Sunday). It works like a spreadsheet's NETWORKDAYS function and is handy for delivery times, payment terms and project deadlines.
How it works
The tool counts every day in your date range and then removes all Saturdays and Sundays, leaving only weekdays. Example: a single Monday-to-Friday week is 5 business days, and the whole of January 2026 (1–31 January) contains 22 business days.
All calculations happen in your browser. Nothing is sent, stored, or tracked.
Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer
How to use
Choose a start date and an end date. The calculator counts every Monday through Friday between them, including both endpoints — the same convention used by the NETWORKDAYS function in spreadsheets.
Use it to estimate project timelines, invoice due dates, shipping windows, or notice periods. Note: public holidays are not deducted because they vary by country and employer.