Convert watts, kilowatts, horsepower and other units of power.
Units of power
The base unit of power is the watt (W): 1 W = 1 J/s. Appliances are usually rated in kilowatts (kW), where 1 kW = 1,000 W. There are two horsepower units: a metric horsepower (PS) is about 735.5 W and a mechanical horsepower (hp) is about 745.7 W, and 1 kW is about 1.36 PS. Do not confuse power (kW) with energy (kWh).
Conversion factors
1 kW = 1.34102 hp
1 hp = 0.7457 kW
One unit converted to all others: Kilowatt (kW)
| Unit | Value |
|---|
| Watt (W) | 1,000 |
| Kilowatt (kW) | 1 |
| Megawatt (MW) | 0.001 |
| Metric horsepower (PS) (LE / PS) | 1.35962 |
| Horsepower (mechanical) (hp) | 1.34102 |
| Milliwatt (mW) | 1,000,000 |
| Gigawatt (GW) | 0.000001 |
| BTU per hour (BTU/h) | 3,412.14 |
| Kilocalorie per hour (kcal/h) | 859.845 |
Common values
| Kilowatt (kW) | Horsepower (mechanical) (hp) |
|---|
| 1 kW | 1.34102 hp |
| 5 kW | 6.70511 hp |
| 10 kW | 13.4102 hp |
| 50 kW | 67.0511 hp |
| 100 kW | 134.102 hp |
| Horsepower (mechanical) (hp) | Kilowatt (kW) |
|---|
| 1 hp | 0.7457 kW |
| 5 hp | 3.7285 kW |
| 10 hp | 7.457 kW |
| 50 hp | 37.285 kW |
| 100 hp | 74.57 kW |
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