Power Converter

Convert power units: Watt, kW, MW, GW, CV, HP, BTU/h, cal/s, dBm and more. Full table and real-world examples.

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Unit	Symbol	Value

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How to convert power units?

Power measures the amount of energy transferred or transformed per unit of time. The SI unit is the Watt (W), defined as one joule per second. Power conversions are essential in mechanical, electrical and thermal engineering.

Watt, kilowatt and megawatt

The Watt is the base unit of the International System. 1 kW = 1,000 W, 1 MW = 1,000,000 W. An LED bulb uses 10 W, a microwave 800 W to 1.5 kW, an electric car 150 kW, a nuclear power plant 1 GW (1,000 MW).

CV (Cheval-vapeur) vs Horsepower (HP)

CV (metric horsepower, or PS in German) is defined in Europe as 75 kgf·m/s = 735.49875 W. HP (British/American horsepower) equals 745.699872 W. These two units are very close but distinct. French vehicle registrations use fiscal horsepower (different from mechanical HP).

Frequently asked questions

CV (metric horsepower) is the European metric unit defined as 75 kgf·m/s = 735.49875 W exactly. HP (horsepower) is the British/American unit equal to 550 ft·lbf... + Read more

The formula is: HP = kW × 1000 ÷ 745.699872 = kW × 1.34102. Practical examples: 100 kW = 134 HP, 150 kW = 201 HP, 200 kW = 268 HP, 300 kW = 402 HP. Conversely: ... + Read more

The ton of refrigeration (TR) is a unit of thermal power used in air conditioning and industrial refrigeration, mainly in the United States. It corresponds to t... + Read more

dBm (decibel-milliwatt) is a logarithmic power unit relative to 1 milliwatt (mW). Unlike other linear units, dBm uses a logarithmic scale: P(dBm) = 10 × log₁₀(P... + Read more

The formula is: kW = BTU/h ÷ 3,412.14. Practical examples for air conditioning: 5,000 BTU/h ≈ 1.46 kW (small room), 9,000 BTU/h ≈ 2.64 kW (bedroom), 12,000 BTU/... + Read more

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