The centiliter (cL) is a metric unit of volume equal to one-hundredth of a liter, commonly used in European countries for beverage and spirit bottle sizes. Wine and spirit labels in the EU frequently display volume in centiliters alongside milliliters. One centiliter equals exactly 10 milliliters or about 0.338 fluid ounces.

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.