Time Calculator
Add or subtract time durations in hours, minutes and seconds without manually carrying 60 seconds into a minute or 60 minutes into an hour. The result is also shown as total hours, minutes and seconds.
First time or duration
Second time or duration
Normalized result4 h 6 min 15 s
Total hours4.104167 h
Total minutes246.25 min
Total seconds14,775 s
How this tool works
Each duration is converted to total seconds, added or subtracted, then normalized back into hours, minutes and seconds.
Example
1 hour 45 minutes 30 seconds plus 2 hours 20 minutes 45 seconds equals 4 hours 6 minutes 15 seconds.
Common questions
Can the result be negative?
Yes. Subtracting a larger duration from a smaller one produces a negative normalized result.
Does this work with clock times such as 8:15 AM?
This page is optimized for durations. Use the Time Card Calculator for start/end work times.