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Power Converter
Enter any field to convert all units instantly. Reference: 1 HP = 745.7 W; 1 PS = 735.5 W; 1 kcal/h = 1.163 W
W
kW
HP
PS
kcal/h
BTU/h
Reference: 1 kW = 1000 W ≈ 1.341 HP ≈ 1.360 PS ≈ 860 kcal/h ≈ 3412 BTU/h
Use Case
An equipment purchase spec calls for a 5 HP (imperial) motor; the electrical engineer must convert to kW to estimate energy cost and size the cable, ensuring the power supply is not overloaded. Spec sheets often mix HP, kW, PS, and kcal/h — this tool converts them all at once.
Example
Converting 5 HP (imperial): / To W: 5 × 745.7 = 3,728.5 W / To kW: 3.729 kW / To PS (metric hp): 3,728.5 / 735.5 = 5.07 PS / To kcal/h (heat planning): 3,728.5 × 0.8598 = 3,205 kcal/h / Cable sizing (electrical input at 90% efficiency): input = 3.729 / 0.9 = 4.14 kW — choose a 2.0 mm² cable rated 20 A or above
Further reading: Motor power conversion and electrical design
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