Imperial/US

Gallon

Définition

Une unité de volume avec deux définitions : le gallon américain vaut 3,785411784 litres ; le gallon impérial britannique vaut 4,54609 litres.

Explication

The US gallon is about 20% smaller than the UK imperial gallon — a critical distinction for fuel economy comparisons. US fuel efficiency is measured in miles per gallon (mpg); a car getting 30 US mpg achieves only about 25 UK mpg. One US gallon = 4 quarts = 8 pints = 128 US fluid ounces. US gas prices per gallon are roughly one-quarter of European per-liter prices before unit conversion.

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