1 gallon to litre
1 gallon (gal) = 3.785411784 litres (L) = 231 cubic inches = 4 qt = 128 fl oz U.S. liquid gallon is defined as 231 cubic inches and is equal to 3.785411784 litres or about 0.13368 cubic feet. A liter) is defined as one cubic decimetre (1 L = 1 cubic dm).