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BTU to kW Calculator: BTU/hr to Kilowatts

Convert BTU/hr to kilowatts, watts, and refrigeration tons for heat pumps, air conditioners, furnaces, and space heaters. This is the power conversion (heating and cooling output). Converting BTU energy into kilowatt-hours instead? Use the WattSimple BTU to kWh converter instead.

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Power

10.55 kW

BTU/hr
36,000
Kilowatts
10.55 kW
Watts
10,551 W
Refrigeration tons
3 tons

1 kW = 3,412 BTU/hr; 1 refrigeration ton = 12,000 BTU/hr. This converts units. To size a heat pump or AC for a room, use the heat pump sizing calculator below, which factors in square footage and climate.

Frequently asked questions

Divide BTU per hour by 3,412.14: kW = BTU/hr ÷ 3,412. For example, a 36,000 BTU/hr heat pump is about 10.5 kW of heat output. To go the other way, BTU/hr = kW × 3,412.

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WattSimple. (2026, July 19). BTU to kW Calculator: BTU/hr to Kilowatts. https://wattsimple.com/convert/btu-to-kw

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Sources & standards

This tool's methodology and data follow US standards and authoritative public datasets: