Date & Days Calculators

Fast, free calculators for ages, day counts, working days, and countdowns.

  • Fast & Accurate
  • Mobile Friendly
  • Accessible for All

Business Days Between Dates

About This Calculator

The business days between dates calculator tells you how many workdays separate two dates. It counts every day in the range, then sets aside weekends and public holidays, so what is left is the number of days on which business is actually done.

This is the figure that project schedules, contracts, and service agreements really run on. "Ten business days" is a very different span from ten calendar days once you allow for weekends and holidays, and quoting or planning against the wrong one is a common cause of missed deadlines. Whether you are estimating a delivery, tracking a processing time, or measuring how long a task actually took in working terms, the business-day count is the honest number.

The result lays out the full breakdown: total days in the range, weekend days, public holidays that fell on weekdays, and the remaining business days. Both endpoints are included, and if the dates are entered in reverse the calculator reorders them and says so. Holidays are taken from a national list, and a holiday already on a weekend is not counted twice.

To use it, pick a start date and an end date and press Count working days. The calculation runs privately in your browser.

The working days calculator is the same tool with different framing, and the working days calculator for India applies the Indian national holiday list.

How It Works

  1. Enter a start date.
  2. Enter an end date.
  3. Click “Count working days”.
  4. View the business days, with weekends and holidays removed.

Formula & Methodology

The result is worked out as follows:

Working days = all days − weekends − public holidays

The calculator walks every day from the start date to the end date, inclusive. It removes Saturdays and Sundays, then removes public holidays that fall on a weekday, and reports the remaining days as business days.

Worked Examples

Mon 2026-02-02 to Fri 2026-02-1310 business days
A two-week span with one weekday holiday9 business days
Fri 2026-01-02 to Mon 2026-01-052 business days (weekend skipped)