How to calculate working days correctly

Correctly calculating the number of working days is very important for office workers. In this article, I will introduce an effective calculation method.

Calculation method

  1. Check the total number of days per month.
  2. Excluding weekends and public holidays.
  3. Deduct your vacation days.


  • Total number of days in January: 31 days
  • Weekends and public holidays: 10 days
  • Number of vacation days: 2 days

Number of working days = 31 days – 10 days – 2 days = 19 days


This simple calculation method will help you determine exactly how many days you work. We hope that accurate calculations will help you plan your workday.