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Home › Everyday › Days Between Dates Calculator

Days Between Dates Calculator

By the CalcMundi team · Updated October 22, 2026 · Formulas checked against standard financial math

Count how many days there are between two dates, including business days and weekend days.

How to use it

Choose a start date and an end date. By default the end date is not counted (from Monday to Tuesday is 1 day). Tick "Include the end date" to count both days.

Business days

Business days count Monday to Friday only. Public holidays are not removed, because they change from country to country — subtract them yourself if needed.

Uses

  • Deadlines, contracts and notice periods.
  • Pregnancy and project countdowns.
  • Planning trips and vacations.

Frequently asked questions

Does the result include the start date?

The count runs from the start date to the end date. Tick "Include the end date" to count both ends.

Are holidays excluded from business days?

No, only Saturdays and Sundays are excluded.

See also

Add this calculator to your website

Free for blogs, real estate agents, brokers and any site. Paste this code where you want the calculator to appear. It adjusts its height on its own.

Results are estimates for information only and are not financial, legal or medical advice. Rates, taxes and fees vary — confirm with a professional or your lender.