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Horsepower Converter

Convert Mechanical HP, Metric PS, Kilowatts, and Wheel Horsepower with drivetrain loss

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Engine, Power & Drivetrain Performance Studio

Calculate horsepower, torque dyno power curves, cylinder displacement, transmission ratios & Moroso 1/4-mile acceleration

Power & Vehicle Specifications

15%
FWD Manual (~12%)RWD Auto (~15%)AWD Heavy (~22-25%)
Brake Horsepower (Crank)300BHP / Flywheel
Wheel Horsepower (Dyno)255WHP (-15% loss)
Metric Horsepower304.2PS / CV (DIN 70020)
Kilowatts223.7kW (ISO standard)
Power-to-Weight Ratio:11 lbs / HP
181.8 HP / ton
Drivetrain Parasitic Loss:~45 HP dissipated

About Horsepower Converter

Convert engine power output across international standards: Mechanical HP (BHP), Metric Horsepower (PS/CV), Kilowatts (kW), and Wheel Horsepower (WHP). Features customizable drivetrain parasitic loss percentages for FWD, RWD, and AWD.

Key Capabilities & Features

  • Instant conversion between Mechanical HP (BHP), Metric PS (DIN/CV), Kilowatts (kW), and Electrical HP
  • Wheel Horsepower (WHP) vs. Brake Horsepower (BHP at crank) converter
  • Configurable drivetrain parasitic loss percentage slider (10% to 25%)
  • Shows exact horsepower dissipated through transmission, driveshaft, and differential

How to Use Horsepower Converter

1

Enter Power Figure

Input your engine or dynamometer power rating.

2

Select Power Standard

Choose Mechanical HP, Metric PS, kW, or WHP.

3

Set Drivetrain Loss

Adjust drivetrain loss percentage based on vehicle configuration (FWD 12%, RWD 15%, AWD 20%).

4

Inspect Cross-Standard Matrix

View horsepower at crank vs. wheel horsepower simultaneously.

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100% client-side calculation. Your data never leaves your browser.

Frequently Asked Questions

What is the difference between HP and PS?

1 Mechanical Horsepower (HP) is 745.7 Watts, whereas 1 Metric Horsepower (PS or Pferdestärke) is 735.5 Watts. Thus, 1 HP ≈ 1.014 PS.

What is WHP vs BHP?

BHP (Brake Horsepower) is power measured directly at the engine flywheel/crankshaft. WHP (Wheel Horsepower) is power measured at the wheels on a chassis dynamometer after 12-20% drivetrain frictional losses.