Power Converter & Calculator
Convert between watts (W), kilowatts (kW), horsepower (hp), BTU/h, and other power units. Free online power conversion calculator with formulas and tables.
Power Unit Converter
Keychron V1 QMK Custom Mechanical Keyboard
A versatile 75% layout wireless mechanical keyboard. Perfect for programming with Mac/Windows compatibility and exceptional build quality.
Common Power Conversions
Power Conversion Table
| Unit | Watts (W) | Kilowatts (kW) | Horsepower (hp) |
|---|---|---|---|
| 1 Watt | 1 | 0.001 | 0.00134 |
| 1 Kilowatt | 1000 | 1 | 1.341 |
| 1 Horsepower | 745.7 | 0.7457 | 1 |
Popular Power Unit Conversions
Standard Units
Mechanical Power
Power Conversion Formulas
Watts to Kilowatts
kW = W ÷ 1000
Watts to Horsepower
hp = W ÷ 745.7
Kilowatts to Horsepower
hp = kW × 1.341
Watts to BTU/hour
BTU/h = W × 3.412142
Frequently Asked Questions
What is the difference between watts and kilowatts?
A kilowatt (kW) is equal to 1000 watts (W). This is similar to how a kilometer is 1000 meters. Kilowatts are commonly used for expressing larger amounts of power.
How do I convert horsepower to watts?
To convert horsepower to watts, multiply the horsepower value by 745.7. For example, 1 horsepower = 745.7 watts.
What's the difference between mechanical and metric horsepower?
Mechanical horsepower (hp) equals 745.7 watts, while metric horsepower (PS) equals 735.49875 watts. The difference is small but can be significant in precise calculations.
About this Calculator
Convert between watts (W), kilowatts (kW), horsepower (hp), BTU/h, and other power units. Free online power conversion calculator with formulas and tables.