Business Days Calculator
A business days calculator counts or projects weekdays (Monday through Friday), excluding Saturday and Sunday — either the number of business days between two dates, or the resulting date after adding a number of business days to a start date. Treating dates as plain UTC calendar days, rather than local timestamps, avoids the same subtle off-by-one risk as the date calculator: a business-day count computed from local time could gain or lose a day for someone near a time zone boundary or during a daylight-saving change.
How it works
- Choose whether to count business days between two dates, or add business days to a start date.
- Enter the date(s).
- Read the business day count or resulting date.
Formula Counts weekdays (Mon-Fri) between two dates, or steps forward one day at a time skipping Sat/Sun
Frequently asked questions
Does this account for public holidays?
No — it only excludes Saturday and Sunday, not country-specific public holidays, since holidays vary by country and region.
Is the count inclusive of both dates?
Yes — the "between" mode counts both the start and end date if they fall on a weekday.
What time zone does this use?
Calendar dates are treated as UTC calendar days, avoiding local-timezone off-by-one errors — same approach as this site's date calculator.
Why use this instead of the date calculator?
The date calculator counts total calendar days; this tool specifically counts or adds weekdays, useful for shipping estimates, SLA deadlines, and work-day planning.
What if the start date itself falls on a weekend?
In "between" mode, a start date on Saturday or Sunday simply isn’t counted (same as any weekend day). In "add business days" mode, counting always begins from the day after the start date, so it works the same whether the start date is a weekday or a weekend.