Enter the horsepower and engine displacement into the calculator to determine the horsepower per liter, or enter the horsepower per liter and one of the other values to find the missing variable.

Hp Per Liter Calculator

Enter any 2 values to calculate the missing variable

Horsepower Per Liter Formula

The following formula is used to calculate the horsepower per liter for an engine.

HPPL = HP / V

Variables:

  • HPPL is the horsepower per liter
  • HP is the horsepower of the engine
  • V is the engine displacement in liters

To calculate the horsepower per liter, divide the horsepower of the engine by the engine displacement in liters.

What is Horsepower Per Liter?

Horsepower per liter (HPPL) is a measure of an engine’s efficiency in terms of the power it produces relative to its size. It is calculated by dividing the engine’s total horsepower by its displacement in liters. This metric is often used to compare the performance of different engines, as it provides an indication of how effectively an engine converts fuel into power. Higher horsepower per liter values generally indicate more efficient and powerful engines.

How to Calculate Horsepower Per Liter?

The following steps outline how to calculate the horsepower per liter.


  1. First, determine the horsepower of the engine (HP).
  2. Next, determine the engine displacement in liters (V).
  3. Finally, calculate the horsepower per liter using the formula HPPL = HP / V.
  4. After inserting the values 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) = 300

Engine Displacement (V) = 2.5 liters