Provide the torque (Nm) and rotational speed (RPM) to compute power in kilowatts. You can also enter any two fields below and we’ll solve the third.

Nm to kW Converter

Switch to kW to Nm

Enter any 2 values to calculate the missing one

Nm to kW Formula

Use the relationship between torque, speed, and power to convert Newton-meters to kilowatts.

P = \frac{T \times 2 \pi \times RPM}{60 \times 1000} \quad \text{(kW)}

Variables:

  • P is power in kilowatts (kW)
  • T is torque in Newton-meters (Nm)
  • RPM is rotational speed in revolutions per minute

Tip: A handy shortcut is kW ≈ T × RPM / 9550 (because 9550 ≈ 60×1000 / 2π).

Newton-meters to kilowatts (at 1500 RPM)
Torque (Nm) Power (kW)
50.785
101.571
152.356
203.142
304.713
406.284
507.854
7511.781
10015.707
12519.634
15023.561
20031.415
25039.268
30047.122
* Rounded to 3 decimals. Uses kW = Nm × RPM ÷ 9550. Assumed RPM: 1500. At 1500 RPM: 1 Nm ≈ 0.157 kW.

How to Calculate kW from Nm

  1. Note the torque T in Newton-meters and the speed RPM.
  2. Apply kW = (T × 2π × RPM) / (60 × 1000) or the shortcut kW ≈ T × RPM / 9550.
  3. Compute power in kilowatts and verify with the calculator above.

Example: With T = 120 Nm at 1500 RPM, power ≈ 120 × 1500 / 9550 = 18.85 kW.