HP to kW converter
Free HP to kW converter. Convert horsepower to kilowatts and kW to HP, then estimate motor input kW and amps for single or 3 phase.
HP to kW kW to HP HorsepowerShaft power
7.460 kW
Mechanical output, 1 HP = 0.746 kW.
Motor input and amps (optional)
Volts, amps and watts are the same in the US and Canada, so no unit toggle is needed.
3 phase Single phase Motor efficiency % Power factor Line to line voltage VElectrical input
8.29 kW
Estimated running amps
12.2 A
Use nameplate FLA and code tables for wire and protection sizing.
Estimates based on your inputs. Always verify against the manufacturer's data and the codes that apply where you work.
Quick answers
- 1 HP to kW
- 0.746 kW.
- 5 HP to kW
- 5 × 0.746 = 3.73 kW.
- 10 kW to HP
- 10 ÷ 0.746 ≈ 13.4 HP.
What this means
1 horsepower equals 0.746 kW of mechanical (shaft) power. A motor draws more electrical power than its shaft output because of losses, so input kW = HP × 0.746 ÷ efficiency. To estimate amps you also need the voltage and power factor. Nameplate full load amps are always better than a calculated value.
Formula used
- kW = HP × 0.746
- HP = kW ÷ 0.746
- Input kW = HP × 0.746 ÷ efficiency
- 3 phase amps = input kW × 1000 ÷ (√3 × V × PF)
- Single phase amps = input kW × 1000 ÷ (V × PF)
Related tools
Stuck on a fault? Ask Brixon, first question free
Describe the symptom and your readings. Brixon helps you work through the free, quick checks first, then the deeper tests. It can be wrong, so confirm on the equipment.
Ask Brixon, first question freeCommon questions
How many kW is 1 HP?
How many HP is 1 kW?
Is HP to kW different for 3 phase motors?
Why is the input kW higher than the HP rating?
Can I size wire or a breaker from these amps?
What is metric horsepower?
Estimates based on your inputs. Always verify against the manufacturer's data and the codes that apply where you work.