calculator tools

Work Hours Calculator

Calculate the duration of one shift after subtracting breaks. Choose the next-day option for overnight work and view the result in decimal hours.

This tool processes your inputs in your browser. It does not upload or save them. Read about site analytics and privacy.

How to use Work Hours Calculator

  1. Enter the start and end time using the time controls.
  2. Add all breaks you want to subtract in whole minutes. Select Shift ends the next day if the end time is on the following day.
  3. Calculate work hours to see the net working duration and its decimal-hour equivalent.

Example

A shift from 09:00 to 17:00 with a 30-minute break is 7 hours 30 minutes, or 7.50 decimal hours. A 22:00 to 06:00 overnight shift with a 60-minute break is 7 hours.

Limits and details

  • The calculator measures one shift of up to 24 hours. It does not apply payroll rounding, overtime, holiday rules, or paid-break policies.
  • Times are treated as clock values. Date-specific daylight-saving changes and time-zone differences are not included.

Common questions

How are minutes converted into decimal hours?

Divide the total working minutes by 60. For example, 45 minutes is 0.75 hours, so 7 hours 45 minutes is 7.75 decimal hours.

Should I enter paid breaks?

Only enter breaks you want deducted from the total. Your employer or payroll policy determines whether a break is paid.