Liters to Gallons (Imperial)
Imperial (UK) gallons
One imperial gallon equals 4.54609 L—about twenty percent larger than a US liquid gallon. British brewing, older vehicle efficiency figures, and Commonwealth packaging still reference this unit.
When to use it
Homebrew scaling, classic car forums, or translating overseas aquarium volumes. Confusing imperial with US gallons silently tanks dilution ratios—label which gallon your notes mean. Also open Liters to Gallons (US) when the context is American retail fuel.