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Business Days Calculator

The Business Days Calculator has two modes: "Between dates" counts working days, weekend days and holidays between two dates, and "Add days" finds the date that is N business days after (or before, with a negative number) a start date. Weekends can be Saturday–Sunday or Sunday only, and you can paste public holidays or company days off to exclude them.

  • Free
  • No sign-up
  • Runs in your browser
Options
Mode
Weekend
Result
The result will appear here
Results appear as you type

How to use the Business Days Calculator

  1. Choose "Between dates" or "Add days".
  2. Enter a start date and either an end date or the number of business days.
  3. Pick the weekend type; list public holidays or days off, one date per line.
  4. The number of working days or the resulting date appears instantly.

Examples

Working days in October 2026

Input
2026-10-01 → 2026-10-31 | Sat & Sun off
Output
Business days: 22
Calendar days: 31 | Weekend: 9

Ship 7 business days after an order

Input
Start 2026-10-05 (Monday) | add 7 business days
Output
Wednesday, October 14, 2026

Specs & key facts

ModesBusiness days between dates; date after N business days (forward or backward)
WeekendsSaturday & Sunday, or Sunday only
HolidaysPaste any list of dates (YYYY-MM-DD, one per line)
Start dateChoose whether to include it
ProcessingIn your browser
PriceFree, no sign-up

FAQ

Are public holidays excluded automatically?

No, because holidays differ by country and year. Paste your country's holiday dates into "Extra days off" to exclude them.

Should the start date be counted?

Usually yes for leave requests ("Include start date" on) and no for due dates. Toggle it to fit your case.

Where does "7 business days" start counting?

In Add days mode, counting starts the day after the start date — an order on Monday ships 7 business days later on the following Wednesday.