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Date & time

Business Days Calculator

Count Monday-to-Friday weekdays between two dates, excluding the end date.

Date conventions explained belowClear start and end values
Date workspace
Date workspace

Check which endpoints and calendar conventions are included.

See the method

Choose your dates and times

Runs on your device

Your time calculation

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter start date, end date.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

Input reference and sample values

Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.

InputFormat and unitsSample
Start dateUse a calendar date in year-month-day order.2026-09-14
End dateUse a calendar date in year-month-day order.2026-09-21

Result for these sample inputs

5 weekdays
Calendar days
7
Weekend days
2
Holidays
Not subtracted

Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.

The method, explained

Each full seven-day period contains five weekdays. Remaining days are counted only when they fall Monday through Friday.

A WORKED EXAMPLE

Monday September 14 to Monday September 21, 2026 contains 5 weekdays when the end date is excluded.

What to keep in mind

Public holidays are not subtracted. This uses a Saturday/Sunday weekend and may not match every country or workplace.

Common questions

Are public holidays excluded?

No. Holiday calendars vary by location and year. Subtract applicable weekday holidays separately.

Is the final date included?

No. The interval includes the start and excludes the end. Select the following date to include the final day.

Methodology maintained by ClarityKit. How these tools are built and checked.