Motor Power Formula
Motor power represents the mechanical output power generated by an electric motor. It depends on the torque produced by the motor and the rotational speed of the shaft. Motor power calculations are widely used in mechanical engineering, industrial machinery, and electrical system design.
Motor Power Formula
Power (kW) = (Torque × RPM) / 9550
Formula Explanation
- Torque – Rotational force applied by the motor (Newton-meters).
- RPM – Rotational speed of the motor shaft (revolutions per minute).
- 9550 – Conversion constant used to obtain power in kilowatts.
This formula converts the mechanical energy produced by rotational motion into power output.
Example Calculation
If a motor produces a torque of 50 Nm and operates at 1500 RPM:
Power = (50 × 1500) / 9550 ≈ 7.85 kW
This means the motor delivers approximately 7.85 kilowatts of mechanical power.
Use the Motor Power Calculators
You can calculate motor energy consumption using the calculators below.