◷UTILITIES
Time Duration Calculator
Calculate elapsed time between two clock times, including durations that cross midnight.
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Formula
Times are converted to minutes after midnight, then the difference is calculated with an optional 24-hour rollover.
Duration = end minutes − start minutes (+ 1440 when crossing midnight)
How it works
1
Choose the start and end times.
2
Select whether the end occurs on the same day or the next day.
3
Review total hours, minutes and total minutes.
Important notes
For a same-day calculation, the end time should not be earlier than the start time.
This is elapsed-clock time and does not account for breaks or scheduled unpaid periods.