British thermal unit (IT) conversions

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Convert British thermal units (IT) to

The online converter calculator on this page allows you to select the energy measurement unit you want to convert to starting from British thermal units (IT) (BTU). To make a conversion starting from a unit of energy other than British thermal unit (IT), simply click on the "Reset" button.

What is British thermal unit (IT)?

Definition:

The British thermal unit (IT) is a unit of energy equal to 1,055.05585 joules (1 BTU = 1,055.05585 J), the SI derived unit of energy. It is also equal to 1.05505585 kilojoules (kJ), or 252.164401 calories (thermochemical) (cal), or 0.252164401 kilocalories (thermochemical) (kcal), or 0.5555556 Celsius heat units (IT) (CHU), or 0.29307107 watt hours (Wh) or 0.00029307107 kilowatt hours (kWh).

The British thermal unit is the energy required to increase the temperature of a pound of water by one degree Fahrenheit (or 0.556 degrees Celsius) at a constant pressure of one atmosphere.

The British thermal unit definition varies as follows:

  • The British thermal unit (IT) (BTU) is equal to 1,055.05585262 joules (J)
  • The British thermal unit (ISO) (BTU) is equal to 1,055.056 joules (J)
  • The British thermal unit (thermochemical) (BTU) is equal to about 1,054.35026444 joules (J)
  • The British thermal unit (mean) (BTU) is equal to about 1,055.87 joules (J)
  • The British thermal unit (39 °F) (BTU) is equal to about 1,059.67 joules (J)
  • The British thermal unit (59 °F) (BTU) is equal to 1,054.804 joules (J)
  • The British thermal unit (60 °F) (BTU) is equal to about 1,054.68 joules (J)
  • The British thermal unit (63 °F) (BTU) is equal to about 1,054.6 joules (J)

The most common BTU multiples are:

  • One thousand British thermal units (MBTU, MBtu, e3BTU, BTUE3), equal to 1,000 BTU
  • One million British thermal units (MMBTU, MMBtu, e6BTU, BTUE6), equal to 1,000,000 BTU
  • One therm, equal to 100,000 BTU
  • One quad (energy) (or quadrillion BTU), equal to 1015 BTU

The BTU is commonly used in the power generation, steam generation, heating and air conditioning industries. Usually, the BTU-IT is used in the European Union while the BTU-59 °F is used in the United States.

Notes:
(i) The SI is an abbreviation for the International System of Units
(ii) The IT is an abbreviation for the International [Steam] Table
(iii) The ISO is an abbreviation for the International Organization for Standardization

Symbol:

BTU

Plural:

British thermal units (IT)

Below you can find a comprehensive list with conversions from British thermal units (IT) to other (metric, imperial, or customary) energy measurement units.

  • British thermal unit (IT) to barrel of oil equivalent (BTU to BOE)
  • British thermal unit (IT) to British thermal unit (59 F)
  • British thermal unit (IT) to calorie (BTU to cal)
  • British thermal unit (IT) to calorie (15 C) (BTU to cal)
  • British thermal unit (IT) to calorie (IT) (BTU to cal)
  • British thermal unit (IT) to Celsius heat unit (IT) (BTU to CHU)
  • British thermal unit (IT) to cubic foot of natural gas
  • British thermal unit (IT) to electron volt (BTU to eV)
  • British thermal unit (IT) to erg (BTU to erg)
  • British thermal unit (IT) to foot-pound force (BTU to ft lbf)
  • British thermal unit (IT) to foot-poundal (BTU to ft pdl)
  • British thermal unit (IT) to gallon-atmosphere (UK) (BTU to gal atm)
  • British thermal unit (IT) to gallon-atmosphere (US) (BTU to gal atm)
  • British thermal unit (IT) to giga-electron volt (BTU to GeV)
  • British thermal unit (IT) to gigacalorie (BTU to Gcal)
  • British thermal unit (IT) to gigajoule (BTU to GJ)
  • British thermal unit (IT) to gigawatt hour (BTU to GWh)
  • British thermal unit (IT) to Hartree (BTU to Ha)
  • British thermal unit (IT) to horsepower-hour (BTU to hph)
  • British thermal unit (IT) to inch-pound force (BTU to in lbf)
  • British thermal unit (IT) to joule (BTU to J)
  • British thermal unit (IT) to kilo-electron volt (BTU to keV)
  • British thermal unit (IT) to kilocalorie (BTU to kcal)
  • British thermal unit (IT) to kilojoule (BTU to kJ)
  • British thermal unit (IT) to kilowatt hour (BTU to kWh)
  • British thermal unit (IT) to liter-atmosphere (BTU to L atm)
  • British thermal unit (IT) to mega-electron volt (BTU to MeV)
  • British thermal unit (IT) to megacalorie (BTU to Mcal)
  • British thermal unit (IT) to megajoule (BTU to MJ)
  • British thermal unit (IT) to megawatt hour (BTU to MWh)
  • British thermal unit (IT) to microjoule (BTU to μJ)
  • British thermal unit (IT) to milli-electron volt (BTU to meV)
  • British thermal unit (IT) to millijoule (BTU to mJ)
  • British thermal unit (IT) to nanojoule (BTU to nJ)
  • British thermal unit (IT) to Newton metre (BTU to Nm)
  • British thermal unit (IT) to standard cubic centimeter (BTU to scc)
  • British thermal unit (IT) to standard cubic foot (BTU to scf)
  • British thermal unit (IT) to standard cubic yard (BTU to scy)
  • British thermal unit (IT) to tera-electron volt (BTU to TeV)
  • British thermal unit (IT) to terajoule (BTU to TJ)
  • British thermal unit (IT) to terawatt hour (BTU to TWh)
  • British thermal unit (IT) to ton of coal equivalent (BTU to TCE)
  • British thermal unit (IT) to ton of oil equivalent (BTU to TOE)
  • British thermal unit (IT) to watt hour (BTU to Wh)
  • British thermal unit (IT) to watt second (BTU to Ws)