Btu to Joules conversion

There is more than one type of Btu. Please use the appropriate variation from the list below.

  1. Btu (15°C) to Joules

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  2. Btu (15.6°C) to Joules

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  3. Btu (15.8°C, Canada) to Joules

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  4. Btu (15.8°C, ISO) to Joules

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  5. Btu (3.9°C) to Joules

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  6. Btu (I.T.) to Joules

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  7. Btu (I.T., pre-1956) to Joules

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  8. Btu (mean) to Joules

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  9. Btu (thermoc.) to Joules

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Btu

One BTU is the energy required to heat 1 avoirdupois pound of liquid water by 1 degree Fahrenheit, at a pressure of one atmosphere.

Joules

One Joule is 1 Newton Metre, ie the work done or energy transfered to an object when a one Newton force acts on it over one metre. It can also be defined as the heat energy dissipated by a current of one ampere passing through a one Ohm resistor for one second