$\textit{British Thermal Unit (IT) Per Cubic Foot}$ ($Btu (IT)/ft^3$) is a unit in the category of Energy density. It is also known as Btu per cubic foot, Btu/cubic foot. This unit is commonly used in the UK, US unit systems. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $J/m^3$ by multiplying its value by a factor of 37258.94579.
British Thermal Unit (international Definition) per Cubic Foot