Subtract Times Calculator

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

Time One:
 
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Time Two:
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Result:

 
Learn how we calculated this below

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How to Subtract One Time From Another

Subtracting two times or durations from each other might seem challenging, but it’s actually pretty easy. To subtract one time from another, follow a few simple steps.

Step One: Begin by subtracting the like components from one another. That is, subtract the hours, minutes, and seconds between the two measurements separately.

Step Two: if the resulting seconds are a negative number, then add 60 to the total seconds and subtract 1 from the total minutes.

Step Three: if the resulting minutes are a negative number, then add 60to the total minutes and subtract 1 from the total hours.

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

Since the resulting seconds are a negative number, add 60 seconds and subtract 1 minute:

minutes = -10 – 1 = -11 minutes
seconds = -15 + 60 = 45 seconds

Since the resulting minutes are a negative number, add 60 minutes and subtract 1 hour:

hours = 2 – 1 = 1 hour
minutes = -11 + 60 = 49 minutes

Thus, the overall time difference is 1:49:45.

three steps to subtracting one time from another

To add times together, use our add time calculator.