Power - RPM - Torque Calculator
Unit: Kilowatt (kW), 1 metric horsepower ≈ 0.735 kW
Unit: Revolutions Per Minute (rpm), number of rotations per minute
Unit: Newton-meter (N·m), measure of rotational force
Calculation Result
Core Formulas
Fundamental Calculation Formulas:
Power (kW) = Torque (N·m) × Rotational Speed (rpm) ÷ 9550
Torque (N·m) = Power (kW) × 9550 ÷ Rotational Speed (rpm)
Rotational Speed (rpm) = Power (kW) × 9550 ÷ Torque (N·m)
Power (kW) = Torque (N·m) × Rotational Speed (rpm) ÷ 9550
Torque (N·m) = Power (kW) × 9550 ÷ Rotational Speed (rpm)
Rotational Speed (rpm) = Power (kW) × 9550 ÷ Torque (N·m)
Usage Instructions
Important Notes:
1. Enter exactly two parameters, leave the one you want to calculate blank
2. All input values must be positive numbers (greater than 0)
3. Results are rounded to 2 decimal places (0 decimal for RPM) for readability
4. Do not leave all fields blank or fill in all three fields
1. Enter exactly two parameters, leave the one you want to calculate blank
2. All input values must be positive numbers (greater than 0)
3. Results are rounded to 2 decimal places (0 decimal for RPM) for readability
4. Do not leave all fields blank or fill in all three fields
Example Usage
Example 1: Calculate Torque
Input: Power = 140 kW, RPM = 5000 → Result: Torque = 267.40 N·m
Example 2: Calculate Power
Input: Torque = 300 N·m, RPM = 4500 → Result: Power = 141.36 kW
Example 3: Calculate RPM
Input: Power = 100 kW, Torque = 250 N·m → Result: RPM = 3820 rpm
Input: Power = 140 kW, RPM = 5000 → Result: Torque = 267.40 N·m
Example 2: Calculate Power
Input: Torque = 300 N·m, RPM = 4500 → Result: Power = 141.36 kW
Example 3: Calculate RPM
Input: Power = 100 kW, Torque = 250 N·m → Result: RPM = 3820 rpm
