Electric Motor Calculator

The Formulas

The main formulas used in electric motor calculations are:

1. Power (W) = Voltage (V) × Current (A) × Efficiency (%)
2. Torque (Nm) = (Power (W) × 9.5488) / Speed (RPM)

Calculation Steps

1. Calculate the power using voltage, current, and efficiency
2. Calculate the torque using power and rotational speed

Example Calculation

Let's calculate the power and torque for a motor with the following parameters:

• Voltage: 220 V
• Current: 10 A
• Speed: 1750 RPM
• Efficiency: 90%

1. Power = 220 × 10 × (90 / 100) = 1980 W
2. Torque = (1980 × 9.5488) / 1750 = 10.80 Nm

Visual Representation

This visual represents an electric motor with the parameters from our example calculation.