Convert litres and millilitres to or from US liquid gallons and Imperial gallons. Select the gallon definition explicitly.
One US liquid gallon = 3.785411784 L. One Imperial gallon = 4.54609 L. One litre = 1,000 millilitres.
2 US gallons = 7.570823568 L, while 2 Imperial gallons = 9.09218 L. The same numeral does not mean the same capacity.
US dry gallons are not included. A gallon is a volume unit, so the mass of one gallon varies by substance and temperature. Check whether a source uses US or Imperial units before comparing results.
No. The Imperial gallon is 4.54609 L; the US liquid gallon is 3.785411784 L. Use the unit explicitly stated by the source.
No. Litre is a spelling common in British English and liter in American English. They describe the same unit of volume.
References support the identified formula, unit or jurisdiction. They do not imply endorsement of this site. Check the original document for current conditions and exceptions.
English edition: 16 September 2026.