Business Days Calculator

The Business Days Calculator counts the working days between two dates, or adds and subtracts business days from a date, entirely in your browser. Pick a start and end date to see how many Monday-to-Friday workdays fall between them — minus public holidays — or switch to add/subtract mode to find the date that is, say, 10 business days from today. Choose United States or United Kingdom and the calculator automatically excludes that country's public holidays (US federal holidays or UK bank holidays), or pick “Weekends only” for a pure Monday-to-Friday count. Unlike the ad-heavy calculators that dominate this search, this tool runs locally, has no ads, works in dark mode, and shows you exactly which holidays were excluded. The holiday dataset is curated and dated so you always know how current it is.

How it works

1. Choose a mode: count the business days between two dates, or add/subtract business days from a date.
2. Pick your dates (and a number of days if you're adding or subtracting).
3. Select a country so the right public holidays are excluded — or choose 'Weekends only'.
4. Read the result and the breakdown — which weekends and holidays were excluded — then copy it.

FAQ