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Science Calculators

Power from Torque and RPM Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
N·m
RPM
Verified formula Private

Power

15,707.96

In kilowatts
15.708

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Power from Torque and RPM Calculator

The Power from Torque and RPM Calculator works out your power, along with 1 related figure in an instant. Enter torque and rotational speed and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the torque.
  2. Enter the rotational speed.
  3. Read off your power, together with in kilowatts — the calculator updates automatically, with no button to press.

Formula

The Power from Torque and RPM Calculator uses the formula:

Power = Torque × Rotational speed × 2 × 3.141592653589793 ÷ 60

Worked example

For example, with torque of 50 N·m and rotational speed of 3,000 RPM, the power is 15,707.96.

Inputs used
Torque 50 N·m
Rotational speed 3,000 RPM
Results
Power 15,707.96
In kilowatts 15.708

Results are estimates for educational use, not professional advice.

Frequently asked questions

Use P = torque × RPM × 2π ÷ 60. 50 N·m at 3,000 RPM is about 15,708 W, or 15.7 kW.

It converts RPM to radians per second, the unit needed for power in watts.

Divide watts by about 746 to get mechanical horsepower.

The same torque does more work each second at higher speed, so power increases.

The Power from Torque and RPM Calculator uses the formula: Power = Torque × Rotational speed × 2 × 3.141592653589793 ÷ 60. For example, with torque of 50 N·m and rotational speed of 3,000 RPM, the power is 15,707.96.

Enter the torque. Enter the rotational speed. Read off your power, together with in kilowatts — the calculator updates automatically, with no button to press.

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