Horsepower to kw calculator
Convert horsepower (HP, PS/bhp) to kilowatts (kW) and back. Supports mechanical HP, metric horsepower, and electrical HP with precise, engineering-grade formulas.
motor hp to kw; engine hp to kw
Calculate horsepower to Kilowatts quickly. The mechanical horsepower (bhp) is 1 hp = 0.7457 kW, and metric horsepower is 1 PS = 0.7355 kW. To get HP or PS back, reverse the formulas.
Formula & Table Summary:
Mechanical hp → kW: kW = hp × 0.7457
kW → mechanical hp: hp = kW / 0.7457
Metric PS → kW: kW = PS × 0.7355
kW → metric PS: PS = kW / 0.7355
horsepower to kw calculator
The Horsepower to kW Calculator is a horsepower (HP) to kW engine and motor power converter. In mechanical horsepower (hp or bhp), one hp = 0.7457 kW (usually given as 0.746 kW in electrical specifications). In the metric (metric horsepower PS), 0.7355 kW can be used. Back conversion is just hp = kW /0.7457 and PS = kW /0.7355. The conversions are used to size drives, to estimate electrical needs, to compare engine characteristics, and to conform to standards on datasheets. The tool can benefit electricians, engineers, technicians, and students when they need a fast and uniform translation of the power units in question. HP/kW conversion is critical when you are specifying a pump motor, verifying generator loads, or translating automotive power values, so the correct HP/kW conversion eliminates oversizing, undersizing, and cost overruns.
metric horsepower to kW
| Unit In | Value In | Unit Out | Value Out |
|---|---|---|---|
| hp (mechanical) | 1 | kW | 0.7457 |
| hp (mechanical) | 5 | kW | 3.7285 |
| hp (mechanical) | 10 | kW | 7.457 |
| PS (metric) | 10 | kW | 7.355 |
| kW | 15 | hp (mechanical) | 20.12 |
| kW | 7.5 | PS (metric) | 10.20 |
Frequently Asked Questions - Horsepower to kw calculator:
What is the formula to convert horsepower to kW?
For mechanical horsepower: kW = hp × 0.7457 (often rounded to 0.746).
How do I convert kW to horsepower?
Use hp = kW ÷ 0.7457 for mechanical horsepower.
What is metric horsepower (PS) to kW?
Use kW = PS × 0.7355; conversely PS = kW ÷ 0.7355.
Is brake horsepower (bhp) the same as mechanical hp?
Yes, bhp is commonly treated as mechanical horsepower in conversions.
Why do some datasheets use 0.746 kW per hp?
0.746 kW is a rounded engineering value; the precise factor is 0.7457 kW per hp.
Does efficiency affect the hp↔kW conversion?
The unit conversion does not; but sizing motors from mechanical load power requires dividing by efficiency.
Can I use these formulas for cars and engines?
Yes—automotive power in hp or PS can be converted to kW using the same constants.
Are kW and kVA the same?
No. kW is real power; kVA is apparent power. For AC systems kW = kVA × power factor.
Which hp definition does this calculator use by default?
Mechanical horsepower (hp/bhp). It also supports metric horsepower (PS).
How accurate are these conversions?
They are exact by definition using 0.7457 (hp) and 0.7355 (PS); rounding may be applied for practicality.
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