Power Converter
Free Power Converter, Convert Watts, Kilowatts, Horsepower & BTU/h Instantly
Convert power between any units instantly with OmniConverter's free online power converter. 1 kilowatt equals 1,000 watts, and 1 horsepower equals 745.7 watts. Supports watts, kilowatts, and horsepower. Whether you're comparing engine ratings, calculating electricity consumption, or working on engineering problems, our tool provides precise, real-time power conversions.
How It Works
Convert in three simple steps.
Enter the Power Value
Type your power measurement into the Input Value field. For example, enter 100 to convert 100 watts, or 1.5 to convert 1.5 kilowatts.
Choose Source and Target Power Units
Select your input unit on the left (e.g., watts, kilowatts, megawatts, horsepower, BTU/hr) and your desired output unit on the right dropdown.
Read Your Converted Power Output
The result is calculated and displayed in real time. Ideal for comparing engine power ratings, electrical appliance energy, solar panels, and industrial or mechanical power requirements.
Popular Power Conversions
Common Benchmarks
Reference
1 W → W
1 W
Reference
1 W → kW
0.001 kW
Reference
1 W → hp
0.0013410219 hp
Real-World Use Cases
Power conversion is used when comparing car and motorcycle engine outputs (HP vs kW), sizing solar panel and battery systems (watts and kilowatts), calculating household electricity consumption, comparing HVAC and heating system capacities (BTU/hr vs kW), evaluating industrial motor ratings, and understanding power outputs in physics and engineering contexts.
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Get Embed CodeFrequently asked questions
Quick answers to common conversion questions
How do I convert watts to kilowatts?+
Divide watts by 1,000 to get kilowatts.
What is horsepower?+
Horsepower is a mechanical power unit commonly used for engines and motors.
How do I convert kilowatts to horsepower?+
Multiply kilowatts by 1.34102 to estimate horsepower.
What is the relation between watts and joules per second?+
One watt equals one joule per second.
Can I convert mechanical horsepower to electrical horsepower?+
The converter uses the standard conversion factor for a consistent numeric result.
Why does power matter in appliances?+
Power tells you how much energy an appliance uses per unit of time.
How do I convert watts to BTU per hour?+
Use the appropriate conversion factor if you need heating and cooling industry units.
Is power different from energy?+
Yes. Energy is the total amount used, while power is the rate at which energy is used.
How do I convert kW to W?+
Multiply kilowatts by 1,000.
What unit is used in solar panels?+
Watts and kilowatts are common for panel output.
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