Business Days Calculator
Count the business days (Monday–Friday) between two dates, or add a number of working days to a date to find a deadline. Weekends are excluded automatically; the calendar math runs instantly in your browser.
Examples
Thu 1 Jan → Thu 8 Jan
5 business days (7 calendar days)
Fri + 3 business days
Wednesday
How it works
In “Days between dates” the tool walks forward from the start date one day at a time and counts every Monday to Friday it lands on. The start date itself is not counted and the end date is.
Thursday 1 January → Thursday 8 January Counted: Fri 2, Mon 5, Tue 6, Wed 7, Thu 8 = 5 business days Skipped: Sat 3, Sun 4 = 2 weekend days
“Add business days” does the reverse: it steps forward, skipping Saturdays and Sundays, until it has counted the number you asked for. Public holidays are not known to the tool, so subtract any that fall in your range. The weekend is fixed as Saturday and Sunday.
How to use Business Days Calculator
Why use this tool
Frequently asked questions
Every weekday (Monday–Friday) after the start date, up to and including the end date. The start date itself is not counted — matching how deadlines like “within 10 business days” usually work.
No — holidays differ by country, region and even company. The count excludes weekends only; subtract any holidays in your range manually.
Weekend days are never counted, so a range ending on a Saturday or Sunday counts the same as one ending the previous Friday.
Found a bug or have an idea?
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