How do I calculate Torque, Power & Speed?

To calculate Torque, Power & Speed: Enter Known quantity, Value 1 (kW or N·m), Value 2 (rpm or kW). Click Calculate. INDUGRID computes the result instantly using the formula: P [W] = T [N·m] × ω [rad/s] = T × 2π × n/60 | T = 9550 × P[kW] / n[rpm]. No registration required.

What units does the Torque, Power & Speed calculator use?

The Torque, Power & Speed calculator uses the following units: kW / N·m, rpm / kW. SI units are used by default.

Is the Torque, Power & Speed calculator free?

Yes. The INDUGRID Torque, Power & Speed calculator is completely free, requires no account or login, and works on desktop and mobile browsers.

Mechanical Engineering

Torque, Power & Speed

Calculate shaft torque, mechanical power and rotational speed. The fundamental relationship for any rotating drive system.

Units:

in LinkedIn

💡This formula applies to motors, gearboxes, couplings and driven machinery. Always check that shaft and coupling can handle the torque — not just the power. Peak torque during start-up can be 2–3× nominal torque.

P [W] = T [N·m] × ω [rad/s] = T × 2π × n/60 | T = 9550 × P[kW] / n[rpm]

Input

Known quantity iSelect which two quantities are known to calculate the third.

Value 1 (kW or N·m) iPower in kW, or Torque in N·m depending on selection above.

kW / N·m

Value 2 (rpm or kW) iSpeed in rpm, or Power in kW depending on selection above.

rpm / kW

Result

Power P [kW] —

Torque T [N·m] —

Speed n [rpm] —

Angular velocity ω [rad/s] —