# 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.