How Many Liters in a Gallon?

Q: How many liters in a gallon UK?

1 UK (imperial) gallon = 4.546 liters, which is larger than the US gallon of 3.785 liters.

3.785 L in 1 US gallon

There are 3.785 liters in 1 US gallon. Use the chart and calculator below to convert any amount instantly.

1.893 L= ½ gallon

3.785 L= 1 US gallon

4.546 L= 1 UK gallon

0.264 gal= 1 liter

Gallons to Liters Calculator

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Gallons to Liters Chart

US Gallons	Liters	Quarts	Fluid Ounces
¼ gal	0.946 L	1 qt	32 fl oz
½ gal	1.893 L	2 qt	64 fl oz
¾ gal	2.839 L	3 qt	96 fl oz
1 gal	3.785 L	4 qt	128 fl oz
1.5 gal	5.678 L	6 qt	192 fl oz
2 gal	7.571 L	8 qt	256 fl oz
2.5 gal	9.464 L	10 qt	320 fl oz
5 gal	18.927 L	20 qt	640 fl oz
10 gal	37.854 L	40 qt	1280 fl oz

Easy to remember: 1 gallon ≈ 3.8 liters. A 2-liter soda bottle is a little more than half a gallon!

Liters to Gallons Chart

Liters	US Gallons	Quarts	Fluid Ounces
1 L	0.264 gal	1.057 qt	33.81 fl oz
2 L	0.528 gal	2.113 qt	67.63 fl oz
3 L	0.793 gal	3.170 qt	101.44 fl oz
3.785 L	1 gal	4 qt	128 fl oz
4 L	1.057 gal	4.227 qt	135.26 fl oz
5 L	1.321 gal	5.283 qt	169.07 fl oz
10 L	2.642 gal	10.567 qt	338.14 fl oz

US vs UK gallon: The US gallon is 3.785 liters while the UK imperial gallon is 4.546 liters — about 20% larger! Always check which gallon a recipe uses!