Torque-RPM-Power Calculator (P=τ·n/9549)
Convert motor torque, speed and power via P(kW) = τ(N·m)·n(rpm)/9549: pick any two known values to solve the third.
Key points
Torque-RPM-Power Calculator (P=τ·n/9549): Convert motor torque, speed and power via P(kW) = τ(N·m)·n(rpm)/9549: pick any two known values to solve the third. Formula: P = τ·n/9549 (P: kW · τ: N·m · n: rpm). Enter parameters on the DD-CAT IDE online tool page to get results instantly, with a calculation-model diagram that updates with the inputs. P(kW) = τ(N·m)·n(rpm)/9549.3, the most common torque-speed-power conversion for motor selection. At the same power, lower speed means higher torque (gear reduction increases torque); rated torque is often derived from nameplate power and speed.
Inputs
P = τ·n/9549 (P: kW · τ: N·m · n: rpm)Calculation model (updates with parameters)
| Power P | 15kW | P = τ·n/9549 |
| Horsepower | 20.4PS | 1 PS = 735.5 W |
| Angular velocity ω | 153rad/s | ω = 2πn/60 |
Engineering notes
- P(kW) = τ(N·m)·n(rpm)/9549.3, the most common torque-speed-power conversion for motor selection.
- At the same power, lower speed means higher torque (gear reduction increases torque); rated torque is often derived from nameplate power and speed.
- Metric horsepower: 1 PS = 735.5 W; 1 kgf·m = 9.80665 N·m. Real output must account for transmission efficiency (η < 1).
FAQ
- What is Torque-RPM-Power Calculator (P=τ·n/9549) for?
- Convert motor torque, speed and power via P(kW) = τ(N·m)·n(rpm)/9549: pick any two known values to solve the third.
- What is the formula for Torque-RPM-Power Calculator (P=τ·n/9549)?
- Core formula: P = τ·n/9549 (P: kW · τ: N·m · n: rpm). The tool returns results instantly using this formula and the selected parameters.
- What engineering notes should I keep in mind when using Torque-RPM-Power Calculator (P=τ·n/9549)?
- P(kW) = τ(N·m)·n(rpm)/9549.3, the most common torque-speed-power conversion for motor selection. At the same power, lower speed means higher torque (gear reduction increases torque); rated torque is often derived from nameplate power and speed. Metric horsepower: 1 PS = 735.5 W; 1 kgf·m = 9.80665 N·m. Real output must account for transmission efficiency (η < 1).