Gallons to Liters (gal to L) Converter – US and UK

Enter US gallons to get liters. For UK (imperial) gallons, use the UK gallons to liters converter.

1 US gallon = 3.785411784 L exactly

From
To
3.785411784
Try:
Step-by-stepUS gal → L
11 US gal = 3.785411784 Lformula
21 × 3.785411784substitute
33.785411784 Lresult
URLiunitconverter.com/volume/gallons-to-liters?value=1Open
1 US gal in every unit
ml
Milliliter
1 ml = 1 cm³
3,785.4118 ml
L
Liter
1 L = 1,000 ml
3.7854118 L
m³
Cubic meter
1 m³ = 1,000 L
0.0037854118 m³
tsp
Teaspoon
US teaspoon ≈ 4.93 ml
768 tsp
tbsp
Tablespoon
US tablespoon = 3 tsp
256 tbsp
US fl oz
US fluid ounce
1/128 US gallon
128 US fl oz
US cup
US cup
US cup = 8 US fl oz
16 US cup
metric cup
Metric cup
AU / NZ / CA recipes
15.141647 metric cup
US pt
US pint
US pint = 16 US fl oz
8 US pt
US qt
US quart
US quart = 2 US pints
4 US qt
US gal
US gallon
231 cubic inches
1 US gal
UK fl oz
UK fluid ounce
1/160 UK gallon
133.22787 UK fl oz
UK pt
UK pint
UK pint = 20 UK fl oz
6.6613935 UK pt
UK gal
UK gallon
4.54609 L exactly
0.83267418 UK gal

US gallons to Liters Formula

liters = US gallons × 3.785411784

One US gallon is 3.785411784 liters, by definition, so the conversion is exact. For example, 5 US gal × 3.785411784 = 18.927059 L.

Common Container Sizes

ContainerUS gallonsLiters
Milk jug1 gal3.79 L
Water cooler bottle5 gal18.93 L
Standard aquarium10 gal37.85 L
Oil drum55 gal208.2 L

How Heavy Is a Gallon of Water?

A liter of water weighs very close to 1 kg, so a US gallon of water weighs about 3.785 kg, or 8.34 lb. A UK gallon of water weighs about 4.546 kg, or 10.02 lb.

US gallons to Liters Table

US gallons (US gal)Liters (L)
0.25 US gal0.9464 L
0.5 US gal1.8927 L
1 US gal3.7854 L
2 US gal7.5708 L
3 US gal11.3562 L
4 US gal15.1416 L
5 US gal18.9271 L
6 US gal22.7125 L
7.5 US gal28.3906 L
10 US gal37.8541 L
15 US gal56.7812 L
20 US gal75.7082 L
25 US gal94.6353 L
50 US gal189.2706 L
55 US gal208.1976 L
100 US gal378.5412 L

Common Questions

How many liters are in a gallon?
A US gallon is exactly 3.785411784 liters. A UK gallon is exactly 4.54609 liters.
How many liters is 5 gallons?
5 US gallons is 18.93 liters.
Why are US and UK gallons different?
The US kept the old English wine gallon of 231 cubic inches. In 1824 Britain replaced its gallons with a new imperial gallon based on 10 pounds of water, which is larger.
How much does a gallon of water weigh?
About 8.34 pounds (3.785 kg) for a US gallon at room temperature.