Wheel Horsepower Calculator

Wheel Horsepower Calculator — Calculate Your WHP

Calculate your wheel horsepower with our comprehensive WHP calculator. Determine actual power at the wheels based on engine horsepower and drivetrain loss percentage.

Step 1: Engine Details

Engine Horsepower (HP)

Engine Torque (lb-ft)

Understanding Engine Power

Engine horsepower (HP) and torque are measurements of an engine’s output at the crankshaft. These values are typically provided by manufacturers and represent power before drivetrain losses.

Step 2: Drivetrain & Loss

Drivetrain Type

Drivetrain Loss (%)

15%

Use standard drivetrain loss values

About Drivetrain Loss

Drivetrain loss represents the power lost between the engine and the wheels. It varies by drivetrain type: FWD (10-15%), RWD (12-18%), AWD (20-25%). Manual transmissions typically have slightly lower losses than automatics.

Wheel Horsepower Results

Summary

Comparison

Conversion

Your Estimated Wheel Horsepower

255 HP

at the wheels

Engine Horsepower

300 HP

Power Loss

45 HP

Wheel Torque

238 lb-ft

Drivetrain Loss

15%

Power-to-Weight Ratio

0.17 HP/lb

Efficiency

85%

Power Comparison

Common Vehicle Power Ratings

Vehicle	Engine HP	Wheel HP	Drivetrain Loss

Power Unit Conversion

Common Power Conversions

Horsepower	Kilowatts	PS	Foot-pounds/sec

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