Horsepower Calculator
Estimate engine horsepower from torque and RPM, or from quarter-mile trap speed.
Assumptions used in this calculation
- Trap speed method: The weight/trap-speed formula is a widely used approximation, not an exact dyno measurement.
About this calculator
The horsepower calculator estimates engine horsepower either from a dyno torque/RPM reading, or from vehicle weight and quarter-mile trap speed.
Worked example
300 lb-ft at 5252 RPM
Result: 300 hp
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