Result: -
Decimal hours: -
Total minutes: -
Total seconds: -
Time Calculator
Add or subtract time durations, calculate time between clock times, and convert time formats.
Add / Subtract Time
Time Between
Duration: -
Decimal: -
How the Time Calculator Works
The calculator converts all time values to seconds, performs the operation, then converts back to hours, minutes, and seconds format.
When adding, values automatically roll over (e.g., 70 minutes becomes 1 hour 10 minutes). Negative results are shown with a minus sign.
Example
2:30:00 + 1:45:00 = 4:15:00
That's 4.25 decimal hours, 255 minutes, or 15,300 seconds.
FAQ
- How do I add time durations?
- Enter hours, minutes, and seconds for each duration. The calculator adds them together, automatically converting when values exceed 60.
- Can I calculate time between two clock times?
- Yes! Use the Time Between section. If the end time is before the start time, the calculator assumes it's the next day.
- What is decimal time?
- Decimal time expresses hours as a decimal number. For example, 1 hour 30 minutes = 1.5 hours. This is useful for timesheets and billing.