Dates and time
Business days calculator
Count Monday to Friday days in a date range. Holidays differ by country and employer, so enter how many fall on weekdays in your range.
What this means
- There are 20 business days out of 29 calendar days.
- Both the start and end dates count if they fall on a weekday.
What if
About this calculator
What this calculator does
It counts every Monday through Friday from the start date to the end date, both included, then subtracts the holidays you enter.
How it is calculated
weekdays = 5 per full week + weekdays in the leftover days
business days = weekdays - weekday holidays
How to read the result
Business days is the count most shipping and contract deadlines use. Check whether your deadline counts the start day.
Sources and method
Calendar math on the Gregorian calendar with dates only, so time zones and daylight saving do not apply. Unit tests cover leap years, month ends, and February 29. Weekdays are Monday to Friday; holidays are the ones you enter.
This page uses arithmetic only, with no outside data.
Questions
Does it know public holidays?
No. Holidays vary by country, state, and employer, so you enter how many apply.
Are both dates included?
Yes, when they fall on a weekday.
What if a holiday falls on a weekend?
Do not count it, since weekend days are already excluded.
Can the end be before the start?
Yes. The page counts the range either way.