Enter the end time and start time into the calculator to determine the elapsed time.

Elapsed Time Formula

The following formula is used to calculate the elapsed time.

ET = ET1 - ET0


  • ET is the elapsed time (hours, minutes, seconds) ET1 is the end time (hours, minutes, seconds) ET0 is the start time (hours, minutes, seconds)

To calculate the elapsed time, subtract the start time from the end time. This will give you the total amount of time that has passed. Note that this calculation may need to take into account the conversion of hours, minutes, and seconds into a consistent unit of time measurement.

What is an Elapsed Time?

Elapsed time refers to the amount of time that passes from the start of an event to its finish. It is often used to measure the duration of events or to calculate the time it takes to complete tasks. This concept is commonly used in various fields such as science, sports, transportation, and project management.

How to Calculate Elapsed Time?

The following steps outline how to calculate the Elapsed Time using the formula ET = ET1 – ET0.

  1. First, determine the start time (ET0) in hours, minutes, and seconds.
  2. Next, determine the end time (ET1) in hours, minutes, and seconds.
  3. Subtract the start time (ET0) from the end time (ET1) using the formula ET = ET1 – ET0.
  4. Finally, calculate the Elapsed Time.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Start time (ET0) = 10:30:00

End time (ET1) = 12:45:30