MasterTool

Work Hours Calculator

Calculate work hours from your own entered figures.

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Currency: Amounts are calculated in the currency you select; this site does not convert between currencies and does not use live exchange rates.

What this tool does

Calculate work hours from your own entered figures. End earlier than start means an overnight shift; equal times means zero hours, not 24.

How to use the Work Hours Calculator

  1. Enter or select start time (hh:mm, 24-hour).
  2. Enter or select end time (hh:mm, 24-hour).
  3. Enter or select unpaid break (minutes).
  4. Read the calculated result; change any measurement to compare alternatives.

Formula

minutes=((end−start+1440)%1440)−break; decimal hours=minutes/60
start
Start time (HH:MM, 24-hour)
end
End time (HH:MM, 24-hour)
break
Unpaid break (minutes)

End earlier than start means an overnight shift; equal times means zero hours, not 24.

Worked example

For work hours calculator, the following measurements illustrate the exact method: Start time (HH:MM, 24-hour): 09:00; End time (HH:MM, 24-hour): 17:30; Unpaid break (minutes): 30.

Inputs

  • Start time (HH:MM, 24-hour)09:00
  • End time (HH:MM, 24-hour)17:30
  • Unpaid break (minutes)30

Result

  • Paid decimal hours8
  • Paid minutes480

Results explained

Paid decimal hours
Paid decimal hours from the formula above. End earlier than start means an overnight shift; equal times means zero hours, not 24.
Paid minutes
Paid minutes from the formula above. End earlier than start means an overnight shift; equal times means zero hours, not 24.

Frequently asked questions

minutes=((end−start+1440)%1440)−break; decimal hours=minutes/60

End earlier than start means an overnight shift; equal times means zero hours, not 24.

No. All numbers are entered by you or come from the dated reference table shown on this page; calculations run locally.

This is an estimate, not financial, tax or legal advice. Verify the inputs and output with official sources and a qualified professional.

Check period consistency, currency, percentage inputs and the assumptions: End earlier than start means an overnight shift; equal times means zero hours, not 24.