Our rpm to torque calculator is a valuable tool used to convert Revolutions Per Minute (RPM) to torque using Torque (Nm) = Power (W) / (2 * π * RPM) formula.
Imagine an electric motor spinning at 3,000 RPM and producing 5,000 Watts of power.
Torque (Nm) = Power (W) / (2 π RPM)
Torque = 5,000 / (2 π 3,000) ≈ 15.92 NmRPM to Torque Calculator
| RPM Converted to | Power (W) | Torque (Nm) |
|---|---|---|
| 1,000 | 10,000 | 95.49 |
| 1,200 | 12,000 | 95.49 |
| 1,500 | 15,000 | 95.49 |
| 1,800 | 20,000 | 106.10 |
| 2,000 | 25,000 | 119.37 |
| 2,200 | 28,000 | 129.93 |
| 2,500 | 30,000 | 95.49 |
| 3,000 | 30,000 | 95.49 |
| 3,500 | 40,000 | 113.10 |
| 4,000 | 50,000 | 119.37 |
| 4,500 | 60,000 | 159.15 |
| 5,000 | 70,000 | 166.53 |
| 5,500 | 80,000 | 173.91 |
| 6,000 | 90,000 | 183.24 |
| 6,500 | 100,000 | 193.44 |
| 7,000 | 110,000 | 204.54 |
RPM to Torque Conversion Formula
The formula for converting RPM to torque in SI units is:
Torque (Nm) = Power (W) / (2 π RPM)- Power is measured in Watts (W), representing the rate of energy transfer.
- RPM is the rotational speed in revolutions per minute.
- 2 * π converts the angular velocity from RPM to radians per second.
- The resulting Torque is expressed in Newton-meters (Nm).
- 150 Nm of torque at 2,500 RPM
- 140 Nm at 3,500 RPM
- 130 Nm at 4,500 RPM
If an engine produces 75,000 W at 4,500 RPM:
Torque = 75,000 / (2 π 4,500) ≈ 159.15 NmHow to Calculate Torque from RPM?
Calculating torque from RPM involves these key steps:
- Compute the engine’s power output in Watts at the given RPM.
- Apply the conversion formula: Torque (Nm) = Power (W) / (2 π RPM).
- Ensure consistent units (Nm for torque, W for power).
Suppose an electric motor generates 10,000 W at 5,200 RPM. To calculate the torque:
Torque = 10,000 / (2 π 5,200) ≈ 18.36 NmHow Much Torque is 1800 RPM?
To determine the torque at 1,800 RPM let’s assume the engine produces 20,000 W at 1,800 RPM:
Torque = 20,000 / (2 π 1,800) ≈ 106.10 NmWhat is the Torque at 2000 RPM?
Let’s calculate the torque at 2,000 RPM assuming the engine generates 25,000 W at this speed:
Torque = 25,000 / (2 π 2,000) ≈ 119.37 NmSources / References
- MIT OpenCourseWare: https://ocw.mit.edu/courses/mechanical-engineering/2-61-internal-combustion-engines-spring-2017/
- IEEE Xplore: https://ieeexplore.ieee.org/document/8674513
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