The Horsepower and Torque Relationship

Horsepower and torque are related by engine speed using the formula: torque equals horsepower times 5252, divided by RPM. This constant comes from the mathematical relationship between rotational force and power.

Why 5252 RPM Is Special

At exactly 5252 RPM, horsepower and torque numbers are always equal on any engine dyno chart, which is a handy fact for understanding engine performance curves.