Horsepower (HP)

Torque (lb-ft)

lb-ft

Speed (RPM)

RPM

Solve For:

Torque Horsepower RPM

Formula:
HP = (Torque × RPM) / 5252
Torque = (HP × 5252) / RPM
RPM = (HP × 5252) / Torque

Typical Speeds:
2-pole motor: 3,600 RPM
4-pole motor: 1,800 RPM
6-pole motor: 1,200 RPM
8-pole motor: 900 RPM

Learn HP-torque relationship, motor sizing, and power calculations

Converts between mechanical horsepower, torque (lb-ft), and rotational speed (RPM) using the industry-standard constant of 5252.

Ref: NEMA MG-1

HP & Torque

HP & Torque Results