Time Duration Calculator
Free time duration calculator: work out the hours and minutes between a start and end time, minus an unpaid break, including overnight shifts.
Enter the times
Enter a start and end time and any unpaid break. If the end is earlier than the start, the calculator treats it as an overnight shift.
The duration is the time between start and end, minus the unpaid break.
How the duration is calculated
The calculator turns the start and end times into minutes, wraps past midnight when the end is earlier than the start, and subtracts the unpaid break. The result is shown as hours and minutes, decimal hours, and total minutes.
It is a quick one-off check. When you no longer want to retype start and end times, Sandtime.io records the duration as you work and adds it up across the week.
Track durations, not the clock
Sandtime.io records how long work takes as it happens and rolls it into daily and weekly totals. Free for unlimited users, without surveillance.