A cubic foot is just that, a cube with a foot for all of its dimensions, length, width and height. A square foor is one foot times foot since
1 X 1 = 1
A cube foot is one foot by one foot by one foot since
1 X 1 = 1
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One Cubic Foot is a volume measure and means it contain a volume equivalent to a cube of dimension one foot length, one foot width and one foot height.

A cubic foot is equal to twelve inches. In terms of centimetres a cubic foot is equal to 30.48 centimetres. In terms of metres a cubic foot is equal to 0.3048 metre.