Cubic feet
Cubic feet are imperial units of volume. A cubic foot is defined as the volume of a cube with sides one foot in length. It is normally found in the United States for measuring the volume of household items, inner spaces or parcels.
Barrels
It is important to note that there are different types of barrels used for different purposes:
The US liquid barrel is defined as 31.5 US liquid gallons, which is equivalent to about 119 liters: US liquid barrel
One US dry barrel is equivalent to 115.628 liters: US dry barrel
One oil barrel equaling approximately 42 US gallons or 159 liters: US Oil barrel
A Federal US Barrel typically contains 31 gallons, which is equivalent to approximately 117.35 liters: US federal barrel
One UK barrel is equivalent to around 164 liters: UK barrel