The torque delivered from an electrical motor producing 0.75 kW (750 W) at speed 2000 rpm can be calculated as. T = (750 W) 9.549 / (2000 rpm) = 3.6 (Nm) Example - Torque from an Electrical Motor. The torque delivered from an electrical motor producing 100 hp at speed 1000 rpm can be calculated as. T = (100 hp) 63025 / (1000 rpm) = 6303 (lb f in)
