Hours Between Dates
How many hours between two times?
The exact hour count between two instants, including the fraction — and a warning when a daylight-saving change means the answer is not what dividing by 24 would suggest.
Questions people ask
The things that come up about hours between datess, answered plainly.
Why is my 24-hour span showing 23 hours?
Because a civil day is not always 24 hours. On the day clocks spring forward it is 23; on the day they go back it is 25. The page lists every transition the range crossed so the discrepancy has a name.
How do I count hours worked?
This counts raw hours between two instants. For shifts with unpaid breaks, rounding rules and overtime, use the work hours calculator.
Related tools
How far apart two instants are — in whichever unit you need, counting every day or only the working ones.
Minutes Between DatesAn exact minute count between two instants, with the seconds remainder and the totals in every other unit.
Time Difference CalculatorTwo clock times or two full timestamps, and the difference in hours, minutes and seconds — including the overnight case, where the end time is smaller than the start.
Work Hours CalculatorStart, finish, break — for one shift or a whole week. Totals in hours and minutes and in decimal hours, with overnight shifts handled and nothing sent anywhere.
Elapsed Time CalculatorPick a moment and watch the time since it climb, second by second. The page keeps ticking, so it works as a running clock on anything you have started.