Power Converter
Convert power metrics like watts, kilowatts, and horsepower.. Use this smart bidirectional calculator to convert between different power measurements instantly. See live results, calculation history, and exact formulas.
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Power Converter
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Formula
kW = W × 0.001
To convert Watt to Kilowatt, use the formula displayed above.
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Recent History
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How to Convert Power Units
To perform a conversion, look up the target unit's conversion factor relative to the base unit (watt). Below are the exact mathematical formulas for the most common power unit pairs:
Kilowatt to Horsepower (HP)
hp = kW × 1.341022089 Horsepower (HP) to Kilowatt
kW = hp × 0.745699872 Watt to Kilowatt
kW = W × 0.001 Watt to Kilowatt
kW = W × 0.001 Power Unit Conversion Charts
Here are the standard reference conversion charts displaying values from 1 to 20 for the most popular unit conversions:
kW to hp
| kW | hp |
|---|---|
| 1 | 1.341022 |
| 2 | 2.682044 |
| 3 | 4.023066 |
| 4 | 5.364088 |
| 5 | 6.70511 |
| 6 | 8.046133 |
| 7 | 9.387155 |
| 8 | 10.728177 |
| 9 | 12.069199 |
| 10 | 13.410221 |
| 11 | 14.751243 |
| 12 | 16.092265 |
| 13 | 17.433287 |
| 14 | 18.774309 |
| 15 | 20.115331 |
| 16 | 21.456353 |
| 17 | 22.797376 |
| 18 | 24.138398 |
| 19 | 25.47942 |
| 20 | 26.820442 |
hp to kW
| hp | kW |
|---|---|
| 1 | 0.7457 |
| 2 | 1.4914 |
| 3 | 2.2371 |
| 4 | 2.982799 |
| 5 | 3.728499 |
| 6 | 4.474199 |
| 7 | 5.219899 |
| 8 | 5.965599 |
| 9 | 6.711299 |
| 10 | 7.456999 |
| 11 | 8.202699 |
| 12 | 8.948398 |
| 13 | 9.694098 |
| 14 | 10.439798 |
| 15 | 11.185498 |
| 16 | 11.931198 |
| 17 | 12.676898 |
| 18 | 13.422598 |
| 19 | 14.168298 |
| 20 | 14.913997 |
W to kW
| W | kW |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 11 | 0.011 |
| 12 | 0.012 |
| 13 | 0.013 |
| 14 | 0.014 |
| 15 | 0.015 |
| 16 | 0.016 |
| 17 | 0.017 |
| 18 | 0.018 |
| 19 | 0.019 |
| 20 | 0.02 |
W to kW
| W | kW |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 11 | 0.011 |
| 12 | 0.012 |
| 13 | 0.013 |
| 14 | 0.014 |
| 15 | 0.015 |
| 16 | 0.016 |
| 17 | 0.017 |
| 18 | 0.018 |
| 19 | 0.019 |
| 20 | 0.02 |
Every Power Unit, Explained
Power conversion covers 5 units. Below is a plain-English definition of each one and where you'll actually meet it in daily life.
Watt (W)
The watt is the SI unit of power — one joule of energy per second.
Used for: Light-bulb brightness ratings, appliance power consumption, and audio output.
Kilowatt (kW)
A kilowatt is 1,000 watts.
Used for: Home electrical capacity, EV charging rates, and generator ratings.
Megawatt (MW)
A megawatt is 1,000,000 watts.
Used for: Power-plant output and large industrial electricity demand.
Horsepower (HP) (hp)
One horsepower is about 745.7 watts, originally defined as the work a strong horse can sustain.
Used for: Car engines, electric motors, and HVAC equipment ratings.
BTU per Hour (BTU/h)
BTU per hour measures thermal power — how many BTUs an appliance moves in an hour.
Used for: Air-conditioner and heater capacity ratings in the US.
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Power Converter FAQs
What is a Power converter?
A Power converter is a free online utility that transforms a measurement expressed in one unit of power into its equivalent in another, such as converting Watt to Kilowatt.
How do you convert power units?
To convert power units, choose your from-unit and to-unit from the dropdown list in the tool above, then enter the value you wish to convert. The tool computes the result live in real time using exact SI conversion factor formulas.
What are the most popular power conversions?
The most frequently performed power conversions on our site are Kilowatt to Horsepower (HP), Horsepower (HP) to Kilowatt, Watt to Kilowatt. Our tool pre-calculates full charts and formulas for all of them.
Which power units are supported?
We support all standard global SI (metric) and imperial units including Watt (W), Kilowatt (kW), Megawatt (MW), Horsepower (HP) (hp), BTU per Hour (BTU/h).
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