Convert Gallon (US) (gal (US)) to Gill (UK) (gi (UK)) instantly.
About these units
Gallon (US) (gal (US))
The US gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It is widely used in American commerce for gasoline, milk, water, and other household liquids. Its historical roots lie in old English wine and ale gallons, whose varying definitions ultimately led to divergent US and UK systems. Today, the US gallon remains deeply embedded in American culture, especially in automotive contexts—fuel economy ratings such as "miles per gallon" (MPG) illustrate its everyday relevance. Despite the global shift toward metric volume units, the US gallon persists due to familiarity and regulatory inertia. It remains an iconic unit, symbolizing uniquely American measurement traditions.
Gill (UK) (gi (UK))
A UK gill equals 142 mL, traditionally used in measuring spirits, whiskey, beer, and cooking ingredients. The gill was once a common pub measure, with quarter-gill and half-gill servings used before modern standardized alcohol units replaced them. While now mostly obsolete, the gill is still recognized in historical cocktail recipes, British literature, and the study of older trade practices.