Full name: British thermal unit
Plural form: Btus
Alternate spelling: British thermal units
Category type: energy
Scale factor: 1055.0559
The SI derived unit for energy is the joule.
1 joule is equal to 0.00094781707774915 British thermal unit.
Valid units must be of the energy type.
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The British thermal unit (BTU or Btu) is a non-metric unit of energy, used in the United States and, to a lesser extent, the UK (where it isgenerally only used for heating systems). The SI unit is the joule (J), which is used by most other countries.