Mechanical to Electrical Converter

HP to kW Calculator

Converting US equipment specs for European metric industrial machinery. Converts mechanical and electrical horsepower to kilowatts with decimal precision selector.

HP to kW Calculator
HP
Calculated Result
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Instant Calculation
Engineering Output
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Auxiliary Output
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Step-by-Step Derivation ▼ Show Steps
Governing Formula Verified Physics
kW = HP × 0.74569987  |  Watts = HP × 745.7

Calculations adhere to standard electrical engineering physics and National Electrical Code (NFPA 70) regulations.

Engineering Principles & Calculations

This calculator uses the exact mathematical relationships between Horsepower (HP), Standard (Mechanical / Metric / Electrical) to determine Power (Kilowatts / kW, Watts, Megawatts). In practical installations, factors such as ambient raceway temperature, harmonic distortion, duty cycle continuous operation, and conductor impedance must be accounted for by a certified electrician.

Converts mechanical and electrical horsepower to kilowatts with decimal precision selector.

Typical Application & Industry Guidelines

Converting US equipment specs for European metric industrial machinery.

Reference Matrix

HP to kW Calculator Benchmark Lookup Table

Horsepower (HP)Kilowatts (kW)Electrical WattsMetric HP (PS/CV)
0.5 HP0.37 kW373 Watts0.51 PS
1.0 HP0.75 kW746 Watts1.01 PS
5.0 HP3.73 kW3,728 Watts5.07 PS
10.0 HP7.46 kW7,457 Watts10.14 PS
25.0 HP18.64 kW18,642 Watts25.35 PS
50.0 HP37.28 kW37,285 Watts50.69 PS
100.0 HP74.57 kW74,570 Watts101.39 PS
FAQ

Frequently Asked Questions

How do you convert HP to kW? +
Multiply Horsepower by 0.7457. For example, a 10 HP motor equals 10 × 0.7457 = 7.457 kW.
What is the difference between Mechanical HP and Metric HP? +
Mechanical HP (Imperial) is 745.7 Watts (550 ft-lb/s). Metric HP (PS, CV) is 735.5 Watts (75 kg-m/s). 1 Mechanical HP equals 1.014 Metric HP.
Why are industrial motors sold in both HP and kW? +
North America predominantly uses NEMA ratings in Horsepower, while Europe, Asia, and IEC standards specify motor shaft output strictly in Kilowatts.

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