Date & Time
Time Calculator
Free online time calculator — add and subtract hours, minutes, and seconds. Convert between time units and calculate time durations.
Calculator
TIME OPERATIONS
Build your time calculation
Add or subtract two durations in hours, minutes, and seconds.
hms
hms
TIME RESULT
HOW IT WORKS
How the Time Calculator Works
This calculator converts both time values to seconds, performs the operation, then converts the result back into hours, minutes, and seconds. Overflow such as 90 minutes becoming 1 hour 30 minutes is handled automatically.
Common Uses
- Work hours: total hours across shifts.
- Travel: combine flight or driving durations.
- Productivity: track time spent on tasks.
- Cooking: adjust recipe timings.