The UK gallon (imperial gallon) equals exactly 4.54609 liters, about 20% larger than the US gallon, and remains the standard fuel measurement in the United Kingdom and some Commonwealth nations. British fuel efficiency is expressed in miles per imperial gallon, which yields higher numbers than the US equivalent. One UK gallon equals approximately 1.201 US gallons.

The US pint (pt) is an imperial volume unit equal to one-eighth of a US gallon or approximately 0.4732 liters, best known for sizing beer glasses and ice cream containers in America. The phrase 'a pint is a pound the world around' captures its colloquial significance, though a pint of water actually weighs about 1.043 pounds. One US pint equals exactly 16 US fluid ounces.