Power unit converter
Watts and horsepower — and horsepower means at least four different things.
Precision & format
1 W equals
0.001kW
All 14 units
- WattW1
- KilowattkW0.001
- MegawattMW0.000001
- GigawattGW1 × 10⁻⁹
- MilliwattmW1,000
- Horsepower (mechanical)hp550 ft·lbf/s0.00134102209
- Horsepower (metric)PS75 kgf·m/s0.001359621617
- Horsepower (electric)hp (E)0.001340482574
- Horsepower (boiler)hp (S)0.000101941995
- BTU per hourBTU/h3.412141633
- Ton of refrigerationRT12 000 BTU/h0.0002843451361
- Foot-pound per secondft·lbf/s0.7375621493
- Calorie per secondcal/s0.2390057361
- Kilocalorie per hourkcal/h0.8604206501
Power conversion table
Every unit expressed in watts (W), the SI base for this category.
| Unit | Symbol | 1 unit in W |
|---|---|---|
| Watt | W | 1 |
| Kilowatt | kW | 1,000 |
| Megawatt | MW | 1,000,000 |
| Gigawatt | GW | 1,000,000,000 |
| Milliwatt | mW | 0.001 |
| Horsepower (mechanical)550 ft·lbf/s | hp | 745.69987 |
| Horsepower (metric)75 kgf·m/s | PS | 735.49875 |
| Horsepower (electric) | hp (E) | 746 |
| Horsepower (boiler) | hp (S) | 9,809.5 |
| BTU per hour | BTU/h | 0.29307107 |
| Ton of refrigeration12 000 BTU/h | RT | 3,516.8528 |
| Foot-pound per second | ft·lbf/s | 1.3558179 |
| Calorie per second | cal/s | 4.184 |
| Kilocalorie per hour | kcal/h | 1.1622222 |
