Convert British thermal unit to Watt-hour

One BTU equals 0.2930722222 Wh. This converter allows you to easily convert between British thermal unit and Watt-hour in real time.

Formula

BTU × 0.2930722222 = Wh

Example: 1 BTU = 0.2930722222 Wh

What is British thermal unit?

The British thermal unit is the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit. It is primarily used in the American HVAC industry, where air conditioner capacity is rated in BTU per hour (12,000 BTU/h equals one ton of refrigeration). Residential air conditioners typically range from 5,000 to 25,000 BTU/h. Natural gas is also traded in BTU, with one cubic foot containing about 1,000 BTU. One BTU equals approximately 1,055 joules.

What is Watt-hour?

The watt-hour is a unit of energy equal to 3,600 joules, representing the energy used by one watt of power over one hour. It is commonly used for portable battery capacities; a typical power bank rated at 5,000 mAh at 3.7 V holds about 18.5 Wh. Airline regulations for lithium-ion batteries are also specified in watt-hours, with batteries under 100 Wh generally permitted in carry-on luggage.