Gallon

A gallon is a volumetric unit of measurement. People have used many different gallons throughout history. Only two gallons are still commonly used, which are the imperial and U.S. liquid gallon. 1 imperial gallon is 4.5 litres and 1 U.S. liquid gallon is 4.4 litres

A 1-US-gallon gasoline can showing "U.S. Gallon" marking (for American use), imperial gallons (for some Caribbean countries' and territories' use), and litres (for Canadian use).

Sale of petrol

Gasoline units used in the world:

  Litre

  U.S. gallon

  Imperial gallon

  No data

Petrol, also known as gasoline, is sold by the imperial gallon in four British Overseas Territories (Anguilla, the British Virgin Islands, the Cayman Islands, and Montserrat) and six countries (Antigua and Barbuda, Dominica, Grenada, Saint Christopher and Nevis, Saint Lucia, and Saint Vincent and the Grenadines). All of the countries and territories just mentioned also use miles per hour for speed limits and drive on the left side of the road.

Gasoline is sold by the U.S. gallon in Belize, Colombia, Dominican Republic, Ecuador, Guatemala, Haiti, Liberia, Nicaragua, and Peru, as well as in the Marshall Islands, Federated States of Micronesia, and Palau.

Sizes

1 imperial gallon[1]	= 4.54609 litres (exactly)
	= 8 imperial pints
	= 160 imperial fluid ounces
	≈ 1.20 U.S. wet gallons
	≈ 1.03 U.S. dry gallons
	= 10 pounds of pure water at 62° Fahrenheit
1 U.S. wet gallon	= 231 cubic inches = 3 in × 7 in × 11 in **This is the gallon commonly used in the US.**
	= 128 U.S. fl. oz.
	= 8 U.S. wet pints
	= ​1⁄42 of a U.S. oil barrel
	= 3.785411784 litres (exactly)
	≈ 0.83 imperial gallons
	≈ 0.86 U.S. dry gallons
	≈ 8.33 pounds of pure water at room temperature
1 U.S. dry gallon	= 268.8025 cubic inches **Occasionally used in the US.**
	= 8 U.S. dry pints
	= ​1⁄8 of a U.S. bushel
	= 4.40488377086 litres (exactly)
	≈ 0.97 imperial gallons
	≈ 1.16 U.S. wet gallons