Business Days Calculator
Count the working days between two dates, or find the date a number of business days away. Choose your weekend and add your own public holidays.
INPUT
RESULT
Runs entirely in your browser. Nothing you enter is sent to a server.
How to count business days
Choose a mode
Pick Count working days, or Add working days to find a deadline.
Set your working week
Tick the days that are weekend days where you work. Saturday and Sunday are ticked to start with.
Add holidays
Paste your public holidays, one date per line in the form 2026-12-25. Text after the date, such as the holiday's name, is ignored.
Why holidays aren't built in
Public holidays differ by country, region and even company, and some move every year. Rather than guess, the calculator uses the dates you give it. Most governments publish the list; copy the dates and paste them in.
How the count works
Both the start and the end date are counted when they are working days, like the NETWORKDAYS function in spreadsheets. Tick Don't count the start date to count only the days after it. When adding days, the start date itself is never counted.
Frequently asked questions
How do I count 10 business days from today?
Choose Add working days, keep today as the start date and enter 10. Use a negative number to count backwards.
Can I use a Friday and Saturday weekend?
Yes. Tick the days that are off where you work, for example Friday and Saturday, and untick the others.
Is anything sent to a server?
No. The dates and holidays you enter are only used in your browser.