Working days calculator

Count weekdays between two dates, excluding holidays you provide.

Runs on your device Works offline after setup All Utilities

Start date

End date

Holidays (YYYY-MM-DD, one per line)

Enter your values, then choose Calculate.

Limits

Includes both endpoints. Saturday and Sunday are weekends. Holidays are supplied locally, not fetched. Approximate real-number outputs use 12 significant digits unless a unit specifies otherwise.
Desktop limits are provisional. Physical mobile and Safari verification remains open.

What happens to your data

Working days calculator runs inside this browser tab, and the page's code comes from this site. There is no application server to receive your data, and the site's security policy limits connections to this site.

How local processing works

Good to know

Includes both endpoints. Saturday and Sunday are weekends. Holidays are supplied locally, not fetched. Approximate real-number outputs use 12 significant digits unless a unit specifies otherwise.
Desktop limits are provisional. Physical mobile and Safari verification remains open.