Time Duration Calculator

Time Duration Calculator

The Time Duration Calculator is a free online tool that helps you quickly find the exact difference between two times. Whether you need to calculate hours worked, measure the gap between events, or figure out the time left until a deadline, this calculator gives you accurate results in hours, minutes, and seconds. Simply enter your start time and end time, click “Calculate,” and instantly see the total duration. Perfect for work schedules, travel planning, sports timing, and everyday use.

How to Calculate the Duration Between Two Times

Finding the difference between two times can be tricky, especially when the minutes and seconds don’t match neatly. Follow these steps to calculate the hours and minutes between two times within the same day:

1. Identify the start and end times.
   You’ll subtract the start time from the end time to find the duration.

2. Convert to 24-hour time (if needed).

   • AM times are the same in both 12-hour and 24-hour formats.

   • For PM times, add 12 to the hour.
     Example: 1:00 PM becomes 13:00 in 24-hour time.

3. Compare the minutes in both times.

   • Case 1: Ending time has more minutes than starting time
     Subtract normally, keeping hours on the left of the “:” and minutes on the right.
     Example:

     makefile

      

     13:57


   – 09:22
   04:35

    

   
- **Case 2: Starting time has more minutes than ending time**
Borrow 1 hour from the ending time and add 60 minutes to its minutes value.
Then subtract as usual.
Example:


   13:57
   – 09:58
   ⇒ Borrow 1 hour: 12:117
   – 09:58
   03:59
   

Related Calculators:
Time Calculator, Hours and Minutes Calculator

External Resources:
Time Duration Calculator on Calculator.net