Time Calculator
Add or subtract time, or find the gap between two times.
Duration
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Frequently Asked Questions
Subtract the start from the end. If the end is earlier (past midnight), 24 hours are added. 09:00 to 17:30 is 8 hours 30 minutes.
Yes — switch to "Add / subtract", set a start time and how many hours and minutes to add or take off.
Working With Time
Time arithmetic trips people up because it is base-60, not base-10. This calculator handles the carrying for you and wraps correctly around midnight.
Related calculators
For shift pay use the hours calculator, and for whole days use the date calculator.