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Imperial Gallon (imp gal)

The imperial gallon is a unit of volume, used for fuel measurement in the UK and some Commonwealth countries. Its symbol is imp gal.

imp gal
-gal

1 imperial gallon equals

US Gallons1.20095 gal
Liters4.54609 L
Milliliters4,546.09 mL
US Cups19.2152 cup

About the imperial gallon

The Imperial gallon was defined by the British Weights and Measures Act of 1824 as the volume of 10 pounds of water. It is about 20% larger than the US gallon.

In everyday use the imperial gallon appears in fuel measurement in the UK and some Commonwealth countries. As a point of reference: the Imperial gallon holds about 4.546 liters compared to the US gallon at 3.785 liters.

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