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Hours Calculator

Count paid hours between two clock times, including breaks and an optional overnight shift.

Your numbers

Make it your own
Updates as you type
Net hours
8hours

Calculated from your inputs · rounded for display

Hours and minutes8 h 0 min
Net minutes480
Unpaid break30min

Wall-clock arithmetic for a shift of at most 24 hours, not elapsed time across a daylight-saving change. Equal same-day times mean zero hours.

Your calculation, step by step

No black boxes
  1. Start = 09:00; end = 17:30.
  2. Subtract 30 break minutes.
  3. Net decimal hours = 480 ÷ 60 = 8.

How to use this calculator

  1. Enter your own values in the labeled fields. Check the units and assumptions before comparing results. Only the fields needed for your selected calculation mode are shown.
  2. Your answer updates automatically. Review the calculation steps to see exactly how it was calculated.
  3. Copy, share, save, or download your result. Saved inputs stay on this device.

How the calculation works

Net hours = (end minutes − start minutes + overnight adjustment − break) / 60

Choose next day explicitly for an overnight shift. The result separates decimal hours from hours and minutes, since 7.5 hours means 7 hours 30 minutes. Breaks must fit within the shift. This is clock arithmetic for at most 24 hours, without time-zone or daylight-saving corrections.

A worked example

09:00 to 17:30 is 8.5 hours. Subtract a 30-minute break to get 8 paid hours.

Reading your result

Use the main result together with its units and supporting figures. Display values are rounded; calculations keep their underlying precision. A change in inputs or assumptions can change the answer. Compare the step-by-step working with your intended use before relying on an estimate.

Frequently asked questions

How do I enter an overnight shift?

Select next day, for example 22:00 to 06:00.

Does 7.30 mean seven hours thirty minutes?

No. Decimal 7.30 hours equals 7 hours 18 minutes.

Sources & methodology

This calculator uses the mathematical identity and assumptions stated above. No current rates, prices, or external data are loaded. Conversion tools use international unit definitions.

Formula review: October 24, 2026. Read our methodology.