Wheel Horsepower Calculator

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Calculates the wheel horsepower (WHP) of a vehicle, taking into account engine horsepower and drivetrain losses.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Engine Horsepower (BHP) and Drivetrain Loss Percentage in the units shown.

Step 2

Read Drivetrain Loss and Wheel Horsepower (WHP) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Engine Horsepower (BHP): 350 hp; Drivetrain Loss Percentage: 12 %

Drivetrain Loss: 42 hp; Wheel Horsepower (WHP): 308 hp

Engine Horsepower (BHP): 450 hp; Drivetrain Loss Percentage: 18 %

Drivetrain Loss: 81 hp; Wheel Horsepower (WHP): 369 hp

Engine Horsepower (BHP): 150 hp; Drivetrain Loss Percentage: 10 %

Drivetrain Loss: 15 hp; Wheel Horsepower (WHP): 135 hp

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