Business Days Between Two Dates | Calendar and Scheduling Tools Tools and Utilities Calculator

Business Days Between Two Dates

Tools and Utilities • Calendar and Scheduling Tools

Written by STEM Calculators Team Published December 25, 2025 Updated February 24, 2026

Start date End date Count rule Weekend

Custom holidays (optional)

Add a holiday date

These dates are excluded from business days (even if they fall on a weekday).

Import CSV (later-ready)

CSV can contain dates in YYYY-MM-DD format anywhere in the text.

Tip: If your dates are reversed, the calculator will swap them automatically and tell you. For exclusive ranges, the end date acts like “stop before this date”.

Ready

Enter a start and end date, then click “Calculate”.

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How to use this calculator

1) Choose the date range

Start date: the first day in your range.

End date: the last day you want to reference (its inclusion depends on the count rule).

Count rule:

Inclusive: the end date is counted.
Exclusive: the end date is not counted (the range stops the day before).

Weekend: choose the weekend pattern that matches your calendar (Saturday–Sunday or Friday–Saturday).

2) Optional: add custom holidays

Use Add a holiday date to exclude specific dates from business days.

You can also Import CSV if you already have a list. The importer looks for dates in YYYY-MM-DD format inside the CSV text.

Holidays that fall on weekend days still count as weekend days, but they are also tracked as “holiday overlap” in the results.

3) Calculate and explore the breakdown

Click Calculate to get:

Business days (weekdays that are not holidays)
Weekend days
Total counted days

Open Details & visualization to see:

A breakdown table by week and by month (scrollable on mobile).
A mini calendar that highlights counted business days vs excluded days, with a legend.

Use Reset to clear the form and results, or Fill example to load a test range with sample holidays.