WHP to BHP Calculator
Convert wheel horsepower (WHP) to brake horsepower (BHP) with our comprehensive calculator. Understand drivetrain power loss and calculate your engine’s actual power output.
Step 1: Power Details
Understanding Power Loss
Wheel horsepower (WHP) is the power measured at the wheels, while brake horsepower (BHP) is the power measured at the engine’s crankshaft. Drivetrain loss occurs due to friction in the transmission, driveshaft, differential, and other components.
Step 2: Additional Options
About Drivetrain Loss
Different drivetrain configurations have varying power loss percentages. AWD systems typically have the highest loss (20-25%), followed by RWD (15-20%), and FWD (10-15%). These values can vary based on vehicle age, condition, and specific components.
Power Conversion Results
Estimated Brake Horsepower
Drivetrain Power Loss Comparison
| Drivetrain Type | Typical Loss | Estimated BHP | Power Loss |
|---|
Power Loss Breakdown
Power Conversion Formula
BHP = WHP / (1 – Drivetrain Loss Percentage)
To calculate brake horsepower from wheel horsepower, divide the WHP by (1 minus the drivetrain loss percentage expressed as a decimal). For example: 300 WHP with 20% loss = 300 / (1 – 0.20) = 375 BHP.
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