Imperial Gallons to Liters Converter

To convert a measurement in imperial gallons to liters, multiply the value by 4.54609. The conversion factor comes from the relationship between both units and the liter.

For example, to convert 5 imp gal to liters: 5 × 4.54609 = 22.73045 L.

An imperial gallon is a British unit of volume equal to exactly 4.54609 liters, about 20% larger than the US gallon. The imperial gallon was defined in 1824 as the volume of ten pounds of water. It is still used in the UK and several Commonwealth countries, which is why UK 'miles per gallon' figures look higher than US ones.

Common uses of imperial gallons include: Fuel and fuel-economy figures in the UK and Canada; Historical and Commonwealth liquid measures; Comparing UK vs US gallon quantities; Agricultural and industrial liquid volumes.

A liter is a metric unit of volume equal to 1,000 cubic centimeters or one cubic decimeter, about 0.264 US gallons. Introduced in France in 1795, the liter was originally defined as the volume of one kilogram of water. It is accepted for use with the SI and is the everyday unit of volume for liquids across most of the world.

Common uses of liters include: Beverage and bottle sizes; Fuel sold at the pump in most countries; Engine displacement (e.g. a 2.0 L engine); Cooking and liquid recipe quantities.

Here are some common values converted:

1 imp gal = 4.54609 L 5 imp gal = 22.73045 L 10 imp gal = 45.4609 L 50 imp gal = 227.3045 L 100 imp gal = 454.609 L