Calculate the output torque of an electric motor based on its power and rotational speed.
Motor Specifications
Torque Results
Enter power and speed values
About this calculator
Quick Reference
PPower in Watts
RPMRevolutions per minute
ω2π × (RPM / 60) rad/s
TTorque in Newton-meters
Overview
In an electric motor, torque is the rotational force it produces. It is directly related to the motor's power output and inversely proportional to its speed.
💡
Pro Tips
Formula: T = 9.5488 * P / RPM (where P is in Watts and T in Newton-meters).
Torque is what actually turns the load; speed is how fast it turns.
Check if your power is in Watts or Horsepower (1 HP ≈ 746 Watts).
!
Fun Facts
"Electric motors typically produce maximum torque at zero RPM (stalling), unlike internal combustion engines."
"Tesla vehicles use this high-start torque for rapid acceleration."
"The 'Pound-foot' (lb-ft) is a common unit for torque in the US, where 1 N-m ≈ 0.7376 lb-ft."
