Whats the difference between US and imperial gallons?
The US gallon is used in the United States and is equal to exactly 231 cubic inches or 3.785411784 liters. The Imperial gallon or UK gallon is used in the United Kingdom and is equal to approximately 277.42 cubic inches. Its exact value is defined as 4.54609 liters. One imperial gallon is approximately 1.2 US gallons. Spelling: is it liter or litre? The different spelling of the word liter or litre originates from the spelling differences between British and American English. In British English (used in most Commonweath Countries) it is spelled litre while in American English the word is spelled liter.