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Power Converter

Convert between watts, kilowatts, and horsepower

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Power Converter

0.001
kW

Conversion history

1 W→0.001 kW

About Power Converter

The power converter is a technical tool for converting between the main units of mechanical and electrical power: watts (W), kilowatts (kW), megawatts (MW), metric horsepower (PS), imperial horsepower (HP), and steam horses. Essential for mechanical and electrical engineers, automotive technicians, vehicle buyers, electrical system installers, industrial designers, and professionals specifying motors, generators, industrial equipment, or analyzing machinery and device energy consumption.

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How does the power converter work?

The tool uses standard relationships between different power units to provide precise conversions:

1

Enter the power value you need to convert in the main input field.

2

Select the source power unit (watt, kilowatt, horsepower) from the 'From' selector.

3

Choose the desired target unit in the 'To' selector and get the instantly calculated conversion.

4

Apply the result to specify motors, compare vehicles, size electrical systems, or calculate consumption.

Use cases for the power converter

This tool is indispensable in multiple technical and industrial contexts:

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Vehicle buyers comparing engine specifications expressed in different units depending on manufacturer or region.

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Electrical engineers sizing electrical generation and distribution systems in kilowatts.

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Industrial technicians specifying motors for machinery who need to convert between HP and kW.

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Solar system installers calculating panel power who need to express it in different units.

Tips for power conversions

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1 HP (imperial) ≈ 746 W, 1 PS (metric) ≈ 735 W, 1 kW = 1.34 HP. European cars usually use PS, American ones HP.

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To calculate electrical consumption: multiply kW by usage hours to get kWh (the unit on your electricity bill).

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A 100 HP motor consumes approximately 75 kW when running at full load (considering typical 85% efficiency).

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Frequently asked questions about Power Converter

What is the difference between HP and PS?

HP (imperial horsepower) = 746 W, used in the US. PS (metric horsepower) = 735 W, used in Europe. The difference is small (1.5%), but important in technical specifications.

How many watts does a 1 HP motor consume?

A 1 HP motor consumes approximately 746 electrical watts when running at full load. In practice, considering efficiency: it may consume 800-900W from the electrical grid.

How does power relate to electrical consumption?

Power (kW) × time (hours) = energy (kWh). A 2 kW appliance running 3 hours consumes 6 kWh. Your electricity bill charges for kWh, not kW.