Dates & durations

Business Days Calculator

Count Monday-to-Friday working days and enter additional dates to exclude.

Your dates

On this device

Your dates are remembered here for 30 days. No account needed.

Your story in numbers

Every date has a story.

Enter your dates to discover your result and the next dates worth keeping.

YOUR NEXT DISCOVERY

One date. More ways to see it.

Compatible dates follow you to the next tool.

Dates & durations

Exact Date Difference Calculator

Break a date interval into calendar years, months and days.

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Dates & durations

Add or Subtract from a Date

Add or subtract days, weeks, months or years. Includes 30, 60, 90 and 100-day shortcuts.

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Dates & durations

Countdown to a Date

Follow the time remaining until an event, with your chosen time and time zone.

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Understanding your result

Working days here mean Monday to Friday. Public holidays are not guessed or automatically removed. Enter any additional dates to exclude as YYYY-MM-DD, separated by commas or new lines. Duplicate dates and excluded weekends are counted only once.

See a worked example

Illustrative example, as of September 13, 2026.

Start date: 2020-01-31
End date: 2026-09-13
Include the end date: no

1,726 working days

Are my dates sent to a server?

Calculations run in your browser. Your dates stay on this device unless you choose to include them in a sharing link or image. “Clear my dates” removes them from local storage.