Joule Therm BTUCalorieERGeVFoot-poundGasolineGigajouleHorsepower HourInch-poundJouleKilojouleKilocalorieKilowatt HourMegajoulePetajouleTerajouleThermWatt SecondWh BTUCalorieERGeVFoot-poundGasolineGigajouleHorsepower HourInch-poundJouleKilojouleKilocalorieKilowatt HourMegajoulePetajouleTerajouleThermWatt SecondWh How many Therms in a Joule? 1 Joule equals to 9.478171203551087e-9 Therms