Subtract Times Calculator

To subtract one time from another, enter both times in hours, minutes, and seconds below.

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 time calculator.