Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Automotive
Horsepower from Torque Calculator
Calculate horsepower from torque (in lb-ft) and engine RPM using the classic HP = (torque Γ RPM) / 5252 formula. Use it to convert between dyno-measured torque curves and the more familiar horsepower figures that car spec sheets quote.
Fill in the required fields to see your result.
Automotive
Engine Performance Calculator
Estimate engine horsepower from torque and RPM, with adjustments for displacement and aspiration type. Use this to understand your engine's peak power output or compare different builds.
Fill in the required fields to see your result.
Key differences
| Horsepower from Torque Calculator | Engine Performance Calculator | |
|---|---|---|
| Category | Automotive | Automotive |
| Inputs required | 2 | 4 |
| Result | Horsepower (HP) | Estimated Horsepower (HP) |
| What it does | Calculate horsepower from torque (in lb-ft) and engine RPM using the classic HP = (torque Γ RPM) / 5252 formula. Use it to convert between dyno-measured torque curves and the more familiar horsepower figures that car spec sheets quote. | Estimate engine horsepower from torque and RPM, with adjustments for displacement and aspiration type. Use this to understand your engine's peak power output or compare different builds. |