Calculate workdays

Count Monday-through-Friday dates in an inclusive range without assuming a holiday calendar.

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ToolWorkdays Calculator
Input
Output
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Preview

How it works

The endpoints are ordered, then every UTC date in the inclusive interval is visited. Monday through Friday increase the working count; Saturday and Sunday increase the excluded count.

  • Both endpoints count when they are weekdays.
  • Public holidays remain included because jurisdiction and observed-day rules are not supplied.

Worked example

Business Days in Q1
Calculate business days in the first quarter of 2024
Input
											Input1: 2025-01-01
Input2: 2025-03-31
Output
												From: 2025-01-01
To:   2025-03-31

Business days: 64
Weekend days:  26
Total days:    90
Result:        64 business days

When to use this

Project estimates count weekdays before adding holidays, service desks measure Monday-to-Friday windows, and payroll checks count ordinary weekdays in a period.

Edge cases

  • A public holiday on Tuesday still counts because only weekend weekdays are excluded.
  • Reversed endpoints are swapped and produce the same inclusive count.
  • A one-day Saturday interval returns zero working days and one weekend day.