Enter the horsepower (hp) and the time (s) into the Calculator. The calculator will evaluate the Hp To Joules. 

Hp To Joules Formula

J = HP * 745.7 / T


  • J is the Hp To Joules (joules)
  • HP is the horsepower (hp)
  • T is the time (s)

To calculate Hp To Joules, multiply the horsepower by 745.7, then divide by the time.

How to Calculate Hp To Joules?

The following steps outline how to calculate the Hp To Joules.

  1. First, determine the horsepower (hp). 
  2. Next, determine the time (s). 
  3. Next, gather the formula from above = J = HP * 745.7 / T.
  4. Finally, calculate the Hp To Joules.
  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.

horsepower (hp) = 503

time (s) = 700