Power Converter
Convert W, kW, MW, horsepower (PS/hp), kcal/h, BTU/h, and erg/s all at once. Just enter a value and pick a unit to see a full conversion table.
Last updated:
Input
kW
Unit of the entered value
Kilowatt（kW）
Result
100 kW =
100,000W
| Unit | Symbol | Converted value |
|---|---|---|
| Watt | W | 100,000 |
| Kilowatt | kW | 100 |
| Megawatt | MW | 0.1 |
| Metric horsepower (PS) | PS | 135.9622 |
| Mechanical horsepower (hp) | hp | 134.1022 |
| Kilocalorie per hour | kcal/h | 86,042.23 |
| BTU per hour | BTU/h | 341,214.16 |
| Erg per second | erg/s | 1.0000e+12 |
How it works
- It supports 8 units: W (watt), kW, MW, PS (metric horsepower), hp (mechanical horsepower), kcal/h, BTU/h, and erg/s.
- Conversions are based on the watt (W), using the internationally accepted definitions: 1 kW = 1000 W, 1 PS = 735.49875 W, 1 hp = 745.6999 W, and 1 kcal/h = 1.16222 W.
- To use it, enter the value you want to convert and choose its unit from the dropdown. Once entered, conversions for every unit are listed in a table.
- The converted value in watts (W) is shown prominently at the top as the representative figure. Extremely large or small values switch to exponential notation.
- Displayed digits are automatically rounded for readability. Note the rounding when an exact value is required.
- It is useful for comparing the capacity of air conditioners and heaters (kW, BTU/h, kcal/h) and the output of cars and engines (PS, hp, kW).
Frequently asked questions
- How does the power converter work?
- The watt (W) is the base unit: your value is converted to watts first, then out to each other unit. It uses internationally recognized definitions such as 1 kW = 1000 W, 1 PS = 735.49875 W, and 1 hp = 745.6999 W.
- What is the difference between PS and hp horsepower?
- PS is metric horsepower at 735.49875 W, while hp is mechanical (imperial) horsepower at 745.6999 W, so hp is slightly larger. Check which one a car spec sheet uses before comparing engine outputs.
- Can it convert HVAC ratings in kW, BTU/h, or kcal/h?
- Yes, it covers W, kW, MW, kcal/h, BTU/h, and erg/s, with 1 kcal/h = 1.16222 W. That makes it useful for comparing the capacity of air conditioners and heaters as well as engine power.
Reviews
Tell us what you think of this calculator.
Write a review
Found an incorrect result or a problem? Turn this on to report it.
Rating