Power converters
Watts, kilowatts, horsepower, BTU per hour — for engines, appliances, and HVAC.
6 units30 conversions
Power›hp → kW
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1 hp=
0.7457kW
formula1 hp = 0.7457 kW
Popular in power
Horsepower to Kilowatts
1 hp = 0.7457 kW
Kilowatts to Horsepower
1 kW = 1.34102 hp
Watts to BTU per Hour
1 W = 3.41214 BTU/h
Watts to Kilowatts
1 W = 0.001 kW
Watts to Megawatts
1 W = 1.0000e-6 MW
Watts to Horsepower
1 W = 0.00134102 hp
Watts to Metric Horsepower
1 W = 0.00135962 PS
Kilowatts to Watts
1 kW = 1,000 W
Kilowatts to Megawatts
1 kW = 0.001 MW
Kilowatts to Metric Horsepower
1 kW = 1.35962 PS
All power conversions
30 pairsEvery unit pair in this category. Tap any cell to open that conversion.
| from \ to | WWatts | kWKilowatts | MWMegawatts | hpHorsepower | PSMetric Horsepower | BTU/hBTU per Hour |
|---|---|---|---|---|---|---|
| WWatts | — | × 0.001 | × 1.0000e-6 | × 0.00134102 | × 0.00135962 | × 3.41214 |
| kWKilowatts | × 1,000 | — | × 0.001 | × 1.34102 | × 1.35962 | × 3,412.14 |
| MWMegawatts | × 1,000,000 | × 1,000 | — | × 1,341.02 | × 1,359.62 | × 3,412,140 |
| hpHorsepower | × 745.7 | × 0.7457 | × 0.0007457 | — | × 1.01387 | × 2,544.43 |
| PSMetric Horsepower | × 735.499 | × 0.735499 | × 0.000735499 | × 0.98632 | — | × 2,509.63 |
| BTU/hBTU per Hour | × 0.293071 | × 0.000293071 | × 2.9307e-7 | × 0.000393015 | × 0.000398466 | — |
Each cell shows the multiplier from row → column. e.g. 1 W × n = result in column units.
About power units
Power = energy per time
A watt is one joule per second. A 1 kW heater consumes 1 kWh of energy every hour it runs. Mechanical horsepower (hp) ≈ 745.7 W; metric horsepower (PS), common on European car specs, ≈ 735.5 W.
Frequently asked
How many watts in a horsepower?
Mechanical horsepower equals 745.7 watts; metric horsepower (PS) is 735.5 watts.
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