Effortlessly convert horsepower (HP) to amperes (Amps) with our free online calculator. Ideal for electricians, engineers, and DIY enthusiasts, this tool helps you accurately determine the electrical current draw of motors. Simply input your motor's HP, voltage, phase, efficiency, and power factor to get precise ampere readings.
Formula:
The formula to convert horsepower (hp) to amps (A) depends on the motor's phase:
- Single-Phase AC:
Amps = (hp × 746) / (V × Efficiency × Power Factor) - Three-Phase AC:
Amps = (hp × 746) / (√3 × V × Efficiency × Power Factor)
Where:hp = Horsepower (in HP)746 = Conversion factor from HP to WattsV = Voltage (in Volts)Efficiency = Motor efficiency (as a decimal, e.g., 0.85 for 85%)Power Factor = Power factor (as a decimal, e.g., 0.8 for 80%)√3 = Square root of 3 (approximately 1.732)