Power Conversion

Convert units of power

Features

Broadly covers 76 units

Supports everything from watts to horsepower, Btu, and calories

Convert all at once as you type

Instantly show the results for all units just by entering a value

Handles horsepower standard differences

Distinguish definition differences such as mechanical, metric, and electric horsepower

Includes joule-per-second systems

Convert related units such as J/s systems and volt-amperes

How to Use

Choose the base unit

Specify the original unit to convert from the dropdown

Enter the value to convert

Enter a number in the value field; invalid values are flagged with an error

Check the conversion results

The conversion results to all other units are shown instantly in the list on the right

Copy the results to use them

Copy a converted value to the clipboard with the copy button on each row

Use Cases

Comparing electrical equipment output

Convert the watt rating of appliances and motors to horsepower to grasp performance

Checking engine output

Convert PS, horsepower, and kW for cars and motorcycles to compare specs

Physics and engineering calculations

Assist with calculations for assignments and reports involving power unit conversion

Converting HVAC capacity

Convert Btu/h or refrigeration tons to kW to compare capacities

Understanding units while learning

Check the relationship between power units such as watts and horsepower with real examples

Safety and Privacy

Runs entirely in your browser

Your input data is processed only within your browser and is never sent externally.

Processing only in your browser

unit conversion is processed entirely within your browser, and input data is not sent to any server.

Communications encrypted with HTTPS

Page loading is also encrypted by TLS, and content cannot be read by third parties.

No transmission to third parties

Input content is not sent to external services such as ad networks or trackers.

No automatic saving of results

the input values and conversion results and input suggestions are not stored on the server.

Petawatt (PW)	0
Terawatt (TW)	0
Gigawatt (GW)	0
Megawatt (MW)	0
Kilowatt (kW)	0
Hectowatt (hW)	0
Decawatt (daW)	0
Watt (W)	0
Deciwatt (dW)	0
Centiwatt (cW)	0
Milliwatt (mW)	0
Microwatt (uW)	0
Nanowatt (nW)	0
Picowatt (pW)	0
Femtowatt (fW)	0
Attowatt (aW)	0
Mechanical Horsepower (hp)	0
Horsepower (550 ft·lbf/s) (hp(550))	0
Metric Horsepower (PS)	0
Horsepower (boiler) (hp(S))	0
Horsepower (electric) (hp(E))	0
Horsepower (water) (hp(W))	0
Horsepower (ps) (ps)	0
Btu (IT)/hour (Btu/h)	0
Btu (IT)/minute (Btu/min)	0
Btu (IT)/second (Btu/s)	0
Btu (th)/hour (Btu(th)/h)	0
Btu (th)/minute (Btu(th)/min)	0
Btu (th)/second (Btu(th)/s)	0
MBtu (IT)/hour (MBtu/h)	0
MBH (MBH)	0
Ton (refrigeration) (RT)	0
Kilocalorie (IT)/hour (kcal/h)	0
Kilocalorie (IT)/minute (kcal/min)	0
Kilocalorie (IT)/second (kcal/s)	0
Kilocalorie (th)/hour (kcal(th)/h)	0
Kilocalorie (th)/minute (kcal(th)/min)	0
Kilocalorie (th)/second (kcal(th)/s)	0
Calorie (IT)/hour (cal/h)	0
Calorie (IT)/minute (cal/min)	0
Calorie (IT)/second (cal/s)	0
Calorie (th)/hour (cal(th)/h)	0
Calorie (th)/minute (cal(th)/min)	0
Calorie (th)/second (cal(th)/s)	0
Foot pound-force/hour (ft·lbf/h)	0
Foot pound-force/minute (ft·lbf/min)	0
Foot pound-force/second (ft·lbf/s)	0
Pound-foot/hour (lbf·ft/h)	0
Pound-foot/minute (lbf·ft/min)	0
Pound-foot/second (lbf·ft/s)	0
Erg per Second (erg/s)	0
Kilovolt-ampere (kVA)	0
Volt-ampere (VA)	0
Newton meter/second (N·m/s)	0
Joule/second (J/s)	0
Exajoule/second (EJ/s)	0
Petajoule/second (PJ/s)	0
Terajoule/second (TJ/s)	0
Gigajoule/second (GJ/s)	0
Megajoule/second (MJ/s)	0
Kilojoule/second (kJ/s)	0
Hectojoule/second (hJ/s)	0
Decajoule/second (daJ/s)	0
Decijoule/second (dJ/s)	0
Centijoule/second (cJ/s)	0
Millijoule/second (mJ/s)	0
Microjoule/second (uJ/s)	0
Nanojoule/second (nJ/s)	0
Picojoule/second (pJ/s)	0
Femtojoule/second (fJ/s)	0
Attojoule/second (aJ/s)	0
Joule/hour (J/h)	0
Joule/minute (J/min)	0
Kilojoule/hour (kJ/h)	0
Kilojoule/minute (kJ/min)	0