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Power Converter – 9 units of power

Convert power between hp, kW, PS, BTU/h, W, TR and more – exact and instant.

1 hp = 0.7456998716 kW

Formula: kW = hp × 0.7456998716

Common values
Decimals
In every unit 9 units
Milliwatt (mW) 745,699.8716 mW
Watt (W) 745.6998716 W
Kilowatt (kW) 0.7456998716 kW
Megawatt (MW) 0.0007456998716 MW
Horsepower (hp) 1 hp
Metric horsepower (PS) 1.013869665 PS
BTU per hour (BTU/h) 2,544.433578 BTU/h
Kilocalorie per hour (kcal/h) 641.6155683 kcal/h
Ton of refrigeration (TR) 0.2120361315 TR

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Units of power

Milliwatt (mW)SI (metric) unit1 mW = 0.001 W
Watt (W)SI (metric) unit
Kilowatt (kW)SI (metric) unit1 kW = 1,000 W
Megawatt (MW)SI (metric) unit1 MW = 1,000,000 W
Horsepower (hp)imperial and US customary unit1 hp = 745.6998716 W
Metric horsepower (PS)metric unit accepted with the SI1 PS = 735.49875 W
BTU per hour (BTU/h)imperial and US customary unit1 BTU/h = 0.2930710702 W
Kilocalorie per hour (kcal/h)unit1 kcal/h = 1.162222222 W
Ton of refrigeration (TR)US customary unit1 TR = 3,516.852842 W

How to use: Power Converter

  1. 1 Pick the unit you have and the unit you need.
  2. 2 Type the value – the result in the other unit appears at once (type in the result field to convert back).
  3. 3 Use a common value, set the decimals or swap the units with one click.
  4. 4 Open “In every unit” to see the value in all 9 units of power.

About this tool

Power is energy per unit of time. Electrical devices are rated in watts and kilowatts, engines in horsepower (hp) or metric horsepower (PS), air conditioners in BTU per hour.

Here every value is converted through the watt (W). Choose any two of the 9 units below the converter, or start from one of the popular conversions.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

Which units of power can I convert?

Milliwatt (mW), Watt (W), Kilowatt (kW), Megawatt (MW), Horsepower (hp), Metric horsepower (PS), BTU per hour (BTU/h), Kilocalorie per hour (kcal/h) and Ton of refrigeration (TR).

Which power conversions are used most?

1 hp = 0.7456998716 kW; 1 PS = 0.73549875 kW; 1 BTU/h = 0.2930710702 W; 1 kW = 3,412.141633 BTU/h; 1 TR = 3.516852842 kW; 1 hp = 745.6998716 W.

How exact is the converter?

Each unit is defined by its official value in W, so conversions are exact up to the 10 significant digits shown; you can round to 0–6 decimals.

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