Power Converter
Convert between Watts, Horsepower, and Kilowatts.
Enter a value to see the conversion result
Understanding Power Conversion
Power measures the rate of energy transfer or work done per unit time. The watt is the SI unit, commonly used for electrical devices and engines. One watt equals one joule per second.
| Unit Type | Unit Name | Value in Watts (W) |
|---|---|---|
| Metric | Milliwatt (mW) | 0.001 W |
| Metric | Watt (W) | 1 W |
| Metric | Kilowatt (kW) | 1,000 W |
| Metric | Megawatt (MW) | 1,000,000 W |
| Imperial | Horsepower (hp) | 745.7 W |
| Imperial | BTU/hour | 0.293071 W |
| HVAC | Ton of Refrigeration | 3,516.85 W |
| Physics | Calorie/Second | 4.184 W |
Conversion Tip
Power measures the rate of energy transfer. The watt is the SI unit, with one watt equal to one joule per second.
Quick Reference
- 1 kilowatt = 1,000 watts
- 1 horsepower = 745.7 watts
- 1 megawatt = 1,000 kilowatts
- 1 BTU/hour = 0.293 watts
- 1 watt = 1 joule/second
- 1 calorie/second = 4.184 watts
- 1 ton of refrigeration = 3,517 watts
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