Convert cubic feet to imperial gallons instantly.
Definition: A cubic foot is the volume of a cube with sides of one foot. It equals about 28.3168 liters.
History/origin: The cubic foot became standard in construction, trade, and utilities where larger everyday volumes needed a familiar imperial unit.
Current use: Cubic feet are used for refrigerators, freezers, room air flow, natural gas usage, and shipping volume.
Definition: The imperial gallon is the British gallon standard. It is larger than the US gallon and is defined as exactly 4.54609 L.
History/origin: Britain's 1824 imperial reform created one official gallon standard, replacing older gallon variants used for wine, ale, corn, and other goods.
Current use: Imperial gal is seen in older UK records, Commonwealth references, fuel-economy figures, brewing history, marine contexts, and legacy product specifications.
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