Add or subtract time values, find the duration between two times, or convert time units.
| Total Hours | — |
| Total Minutes | — |
| Total Seconds | — |
| Start Time | — |
| End Time | — |
When calculating time that crosses midnight (e.g. 11 PM to 7 AM), use the "Extra Days" field or add 1 day to get the correct duration of 8 hours.
This calculator uses 24-hour format internally. 9:00 AM = 09:00, 5:30 PM = 17:30, midnight = 00:00, noon = 12:00.
Calculatr