Business Days Calculator – Count Working Days Between Dates
Count working days between two dates, excluding weekends.
About the Business Days Calculator
What is the Business Days Calculator?
A business days calculator counts the working days between two dates while leaving out Saturdays and Sundays.
Why use this calculator?
Shipping estimates, loan processing times and project schedules are usually quoted in business days, not calendar days.
How to use it
- Enter the start and end dates.
- Choose whether to include both endpoints.
- Read the number of business days and weekend days.
Formula
Every day from Monday to Friday in the range counts as a business day.
Public holidays are not excluded automatically — subtract them if your situation requires it.
Frequently Asked Questions
Are public holidays excluded?
No. Only weekends are excluded. Subtract any public holidays that fall in the range manually.
How many business days are in a typical month?
Most months contain about 20 to 23 business days.
Does it account for leap years?
Yes. The date logic follows the Gregorian calendar, including leap years and differing month lengths.
Are weekends and holidays excluded?
Only if the calculator says so. By default, results count every calendar day; use a business-day option where available.
Which time zone is used?
Calculations use whole calendar dates and are time-zone independent unless a time-of-day is involved.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.
Is the information I type kept private?
Yes. All calculations run locally in your browser. Nothing you enter is uploaded, stored or shared with anyone.