Hours calculator
Add hours, find the difference between times and calculate hours worked.
How to useCalculate hours.
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Hours calculator: what it is for
The hours calculator adds and subtracts times in hours:minutes format, finds the difference between two times and the hours worked minus lunch.
It's useful for timesheets, comp time and tracking work hours.
How to use
- Choose add, difference or hours worked.
- Type the times.
- See the total right away.
When to use it
- Fill out a timesheet.
- Track comp time.
- Add up time for classes or projects.
Frequently asked questions
How do I convert hours to decimal?
Divide the minutes by 60. 7:30 becomes 7.5 hours. The calculator shows both formats.
Does it work for comp time?
Yes. Use “Add hours” with negative values for the hours you missed.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.