British Thermal Unit (BTU)

Definition - What does British Thermal Unit (BTU) mean?

British Thermal Unit is a standard unit of energy that is measured at about 1055 joules. The British Thermal Unit (BTU or Btu) is primarily used in the United States more than in the United Kingdom. This energy unit is the total amount of thermal energy that is required to heat or cool 1 pound of water significantly by 1┬░Fahrenheit. BTU is majorly used for power measurement in various industries for heating, power, steam and other forms of energy. The definition of BTU varies as per the different calories, for example, different temperatures of water.

Petropedia explains British Thermal Unit (BTU)

British Thermal Unit is a standard energy unit which ranges from 1.054 to 1.060 Kilojoules. Commonly referred to as BTU, this unit is used to measure energy. Ideally, 1 BTU is equal to 1055 joules, which means that 1055 joules are needed in order to cool off or heat 1 pound of water by 1┬░Fahrenheit. British Thermal Unit is mostly used in the U.S and U.K. A BTU can be converted to other forms of energy, for example:

  • 1 BTU = 252-253 Calories
  • 1 BTU = 1.054-1.060 kJ
  • 1 BTU = 0.293071 Watt hours
  • 1 BTU = 0.25 Kilocalories
  • 1 Million BTU = 1.054615 Gigajoules

A BTU is also used for specifying the energy transferring or energy producing capability of electronic devices which either heat or cool such as refrigerators, furnaces or air conditioners.

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