Power Unit Converter

To perform conversion between various power units, start by selecting the original unit using the “From:” drop-down list and the target unit from the “To:” drop-down list. Then enter the original value into the input field on the left. The tool will instantly display the converted value at the top of the page.  

This converter supports the following Power and Heat Flow Rate units:

Watt (W):

• The watt is the standard unit of power in the International System of Units (SI).
• It is defined as one joule per second, representing the rate at which work is done or energy is transferred.
• In the context of electrical power, one watt is the power produced or consumed when one ampere of current flows at a potential difference (voltage) of one volt.

BTU (IT)/hour: 

• The International Table BTU is a unit of energy based on the International Steam Table calorie. 1 BTU (IT)/h is approximately equal to  0.2930711 watts.

BTU (thermochemical)/hour: 

• British Thermal Unit per hour is a unit of power based on the thermodynamic calorie. Conversion factor: 1 BTU (thermo)/h = 0.2928751 watts.

Calorie (thermochemical)/minute: 

• Thermodynamic calorie per minute is a heat flow rate unit. Conversion factor: 1 calorie (thermo)/min = 0.06973333 watts.

Calorie (thermochemical)/second: 

• Conversion factor: 1 calorie (thermo)/s = 4.184 watts.

Erg/second: 

• Erg per second, where  erg is a unit of energy. Conversion factor: 1 erg/s = 0.0000001 watts.

Foot-pound force/hour: 

• Foot-pound force per hour is a unit of power in the British and American Engineering systems. Conversion factor: 1 foot-pound force/h = 0.0003766161 watts.

Foot-pound force/minute: 

• Conversion factor: 1 foot-pound force/min = 0.02259697 watts.

Foot-pound force/second: 

• Conversion factor: 1 foot-pound force/s = 1.355818 watts.

Horsepower (UK): 

• Horsepower (UK) - unit of power based on  the British Imperial system. Conversion factor: 1 horsepower (UK) = 745.7 watts.

Horsepower (boiler): 

• A unit of power used for rating the capacity of a boiler. Conversion factor: 1 horsepower (boiler) = 9809.5 watts.

Horsepower (electric): 

• A unit of power used for rating electric motors. Conversion factor: 1 horsepower (electric) = 746 watts.

Horsepower (metric): 

• A unit of power based on the metric system. Conversion factor: 1 horsepower (metric) = 735.499 watts.

Horsepower (550 ft · lbf/s): 

• A unit of power often used in the context of the automotive industry. Conversion factor: 1 horsepower (550 ft · lbf/s) = 745.7 watts.

Kilocalorie (thermochemical)/min: 

• Kilocalorie per minute is a heat flow rate unit based on the thermodynamic calorie. Conversion factor: 1 kilocalorie (thermo)/min = 69.73333 watts.

Kilocalorie (thermochemical)/sec: 

• Conversion factor: 1 kilocalorie (thermo)/s = 4184 watts.

Kilowatt (kW): 

• A unit of power in the International System of Units (SI). Conversion factor: 1 kilowatt = 1000 watts.

Megawatt (MW): 

• Conversion factor: 1 megawatt = 1,000,000 watts.

Milliwatt (mW): 

• A unit of power equal to one thousandth of a watt. Conversion factor: 1 milliwatt = 0.001 watts.

Ton of Refrigeration (TR):

• The ton of refrigeration is a unit used in the field of refrigeration and air conditioning to express the cooling capacity of a system.
• One ton of refrigeration is equivalent to absorbing 12,000 BTUs (IT) of heat energy per hour.
• One ton of refrigeration is approximately equal to 3516.8528 watts.