Subtract Times Calculator
To subtract one time from another, enter both times in hours, minutes, and seconds below.
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How to Subtract One Time From Another
To subtract one time from another, follow a few simple steps.
Step One: subtract the second hours, minutes, and seconds from the first separately.
Step Two: if the seconds are a negative number, then add 60 seconds and subtract 1 minute.
Step Three: if the minutes are a negative number, then add 60 minutes and subtract 1 hour.
The result is the difference of the two numbers.
To convert the final time to total minutes or seconds, try our time to decimal calculator.
For example, subtract the time 1:30:45 from 3:20:30.
Subtract the hours, minutes, and seconds from the first time separately:
hours = 3 – 1 = 2 hours
minutes = 20 – 30 = -10 minutes
seconds = 30 – 45 = -15 seconds
Seconds are a negative number, so add 60 seconds and subtract 1 minute:
minutes = -10 – 1 = -11 minutes
seconds = -15 + 60 = 45 seconds
Minutes are a negative number, so add 60 minutes and subtract 1 hour:
hours = 2 – 1 = 1 hour
minutes = -11 + 60 = 49 minutes
Thus, the time difference is 1:49:45.
To add times together, use our add times calculator.
