Counting with or without the end date
From Monday to Friday is 4 days apart, but 5 days if you count both Monday and Friday. Hotel stays count nights (no end date); event durations and leave requests often count both days.
Counting business days
The weekday count skips Saturdays and Sundays but not holidays. If you need to exclude federal holidays, subtract the ones that fall in your range. The 11 federal holidays are New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas.
Common uses
- Deadlines: add 30, 60, or 90 days to a start date for notice periods, return windows, or contract terms.
- Countdowns: days until a wedding, vacation, or due date.
- Ages and anniversaries: how many days you've been married or working somewhere.
Legal and court deadlines often have their own counting rules, such as skipping weekends or the first day, so check the rule that applies to you.
Frequently asked questions
How do I count business days?
Use the weekdays line, which counts Monday through Friday. Subtract any public holidays that fall in the range.
What date is 90 days from today?
Use the add-days box. It's handy for return windows, notice periods, and visa or warranty deadlines.