Divide the engine horsepower (EHP) by the drivetrain loss factor (DTLF) to find the wheel horsepower (WHP).
The Wheel Horsepower (WHP) Calculator is an essential tool for automotive enthusiasts, mechanics, and racers. WHP represents the actual power delivered to a vehicle’s wheels, accounting for drivetrain losses.
Formula
WHP = EHP / DTLF
| Variable | Definition |
|---|---|
| WHP | Wheel Horsepower |
| EHP | Engine Horsepower |
| DTLF | Drivetrain Loss Factor (e.g., 1.15 for 15%) |
Solved Calculations
Example 1
A car’s engine horsepower is 400 HP, and the drivetrain loss factor is 1.15.
| Variable | Value |
|---|---|
| Engine Horsepower (EHP) | 400 |
| Drivetrain Loss Factor (DTLF) | 1.15 |
| Wheel Horsepower (WHP) | 347.83 HP |
Example 2
A motorcycle’s engine generates 200 HP, and the drivetrain loss factor is 1.10.
| Variable | Value |
|---|---|
| Engine Horsepower (EHP) | 200 |
| Drivetrain Loss Factor (DTLF) | 1.10 |
| Wheel Horsepower (WHP) | 181.82 HP |
What is Wheel Horsepower Calculator?
The Wheel Horsepower (WHP) Calculator is an essential tool for determining the actual power delivered to a vehicle’s wheels. Unlike engine horsepower (HP), which measures power at the engine, WHP factors in drivetrain losses, offering a more realistic assessment of a vehicle’s performance on the road.
This calculator is ideal for estimating power losses due to the drivetrain, converting crank horsepower to wheel horsepower, and comparing outputs across different setups. For example, by inputting the crank HP and drivetrain loss percentage, users can calculate the WHP using tools like the crank to wheel HP calculator.
Motorcycle enthusiasts and car tuners can utilize the rear wheel horsepower calculator or wheel HP to crank HP calculator to optimize performance.
Whether you’re working with wheel HP for drag racing calculations or simply curious about power output, this calculator is a must-have for precise tuning and performance analysis.
Final Words:
In summary, the Wheel Horsepower Calculator bridges the gap between engine specs and real-world performance. It ensures you accurately gauge your vehicle’s power at the wheels, aiding in tuning and performance optimization.
