Working days calculator

How it works

The tool reads both dates as plain calendar dates, then walks every day from the start up to and including the end. Each day is checked in order: if its weekday is ticked as a weekend day it is counted as weekend, if its date appears in your holiday list it is counted as a holiday, and otherwise it counts as a working day. The three counts always add up to the calendar days in the range, so the arithmetic is visible. Weekend days default to Saturday and Sunday but any of the seven weekdays can be ticked. Holidays are one yyyy-mm-dd date per line, and an empty list is fine.

Worked example

From Monday 2 March 2026 to Friday 13 March 2026, with Saturday and Sunday as the weekend and no holidays, the tool counts 10 working days and 2 weekend days across 12 calendar days: the first week contributes Monday to Friday, the weekend takes two days, and the second week contributes Monday to Friday again. Adding Tuesday 10 March 2026 to the holiday list drops the working total to 9 while the calendar total stays at 12.

Questions and answers