Horsepower from ET Calculator
Estimate your vehicle’s horsepower based on quarter mile elapsed time (ET) and weight. Understand the relationship between power, weight, and acceleration performance.
Step 1: Performance Details
Understanding ET and Horsepower
Quarter mile elapsed time (ET) is a standard measure of acceleration performance. This calculator estimates horsepower based on the relationship between weight, time, and power. Note that aerodynamics, traction, and drivetrain efficiency also affect actual performance.
Step 2: Calculation Options
About the Calculation
This calculator uses the standard formula: HP = Weight / (ET/5.825)³. The formula assumes good traction and typical aerodynamic drag. For more precise results, consider using a dynamometer or professional performance testing.
Horsepower Estimation Results
Estimated Horsepower
Performance Comparison
| Quarter Mile ET | Estimated HP | Power-to-Weight | Performance Level |
|---|
Power-to-Weight Ratio Analysis
Horsepower Estimation Formula
HP = Weight / (ET/5.825)³
This formula estimates horsepower based on quarter mile elapsed time and vehicle weight. The constant 5.825 is derived from empirical data and represents the relationship between power, weight, and acceleration. For more accurate results, consider professional dynamometer testing.
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