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Hours Calculator

Count the hours between a start and end time, breaks deducted.

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Payable time

—

—Decimal hours
—Total minutes
—Gross pay
Time at work—
Break deducted—
Crosses midnight—

Why decimal hours?

Pay is a rate multiplied by hours, which only works in decimal. 7 hours 45 minutes is 7.75 hours, not 7.45 — a mistake that quietly costs money on timesheets.

Need a whole week of shifts with overtime? Use the work hours calculator.

Quick Tool Overview

The Hours Calculator counts the time between a start and an end time in hours and minutes and in decimal hours, with a break field that subtracts unpaid time. Overnight shifts are handled properly rather than returning a negative duration.

What it does
Calculates hours worked between two times, breaks deducted
You give it
A start time, an end time and any unpaid break
You get back
The duration in hours and minutes and in decimal hours
Best for
Shift work, timesheets, invoicing and payroll entry
Calculators Free, unlimited use No sign-up Runs in your browser

About the Hours Calculator

Enter a start time and an end time to get the duration in hours and minutes and in decimal hours. A break field subtracts unpaid time, which is what turns a clock-in and clock-out pair into payable hours.

Overnight shifts are handled properly. If the end time is earlier than the start time the calculator assumes the shift crossed midnight and adds a day rather than returning a negative duration, so a 22:00 to 06:00 shift correctly reads as eight hours. Twelve and twenty-four hour input are both accepted, and the decimal output is the format payroll systems expect.

Key features of the Hours Calculator

Overnight shifts handled

A 22:00 to 06:00 shift correctly reads as eight hours instead of a negative number.

Break deduction

Unpaid time is subtracted, which is what turns clock-in and clock-out into payable hours.

Decimal output

The format payroll systems expect, given alongside the hours-and-minutes reading.

12 and 24 hour input

Enter times however your rota is written and the calculator reads both.

Instant totals

Change a time and the duration updates, with no submit step.

How to use the Hours Calculator

  1. 1

    Enter the start and end times

    Type them in 24-hour or 12-hour format, whichever you prefer.

  2. 2

    Deduct any break

    Enter unpaid break time in minutes and it is subtracted from the total.

  3. 3

    Read the decimal hours

    The result is shown in hours and minutes and as decimal hours, which is what most payroll systems require.

Frequently asked questions

If the end time is before the start time it assumes the shift crossed midnight and adds 24 hours, so 22:00 to 06:00 correctly returns eight hours rather than a negative number.

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