Motor FLA Calculator

Watts to HP Converter
Torque Calculator
Insulation Resistance Test Voltage
Winding Rating (V) Test Voltage (DC)
<1,000500
1,000-2,500500-1,000
2,501-5,0001,000-2,500
5,001-12,0002,500-5,000
>12,0005,000-10,000
Derived from IEEE Std 43-2000. Applies rotating machines rated 1 hp, 750 W or greater
Formulas
  • Single Phase AC Motor FLA

    Watts: (P [kW] × 1000) / (V × cos ϕ)

    Horsepower: (P [HP] × 746) / (V × cos ϕ × η)

  • Three Phase AC Motor FLA

    Watts: (P [kW] × 1000) / (V × 1.732 × cos ϕ)

    Horsepower: (P [HP] × 746) / (V × 1.732 × cos ϕ × η)

  • 1 Watt

    0.00134102 HP

  • 1 HP

    745.7 Watts

  • Torque

    (33,000 x HP) / (6.28 x RPM)

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