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3 US gallons to Liters

3 gal = 11.3562 L

3 US gallons (gal) equals 11.3562 liters (L). The conversion uses the exact factor 3.78541: 3 × 3.78541 = 11.3562.

11.3562
FormulaLiters = US gallons × 3.78541
Quick

How to convert US gallons to liters

  1. Take your value

    Start with your value in US gallons.

  2. Multiply by 3.78541

    Multiply the US gallon value by 3.78541. This is the exact conversion factor from US gallons to liters.

  3. Read the result

    The product is your value in liters. For example, 5 gal × 3.78541 = 18.9271 L.

Conversion formula

The exact factor from US gallons to liters is 3.78541.

Liters = US gallons × 3.78541

US gallons to Liters conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from US gallons to liters
US gallons (gal)Liters (L)
0.1 gal0.37854 L
0.25 gal0.94635 L
0.5 gal1.8927 L
1 gal3.7854 L
1.5 gal5.6781 L
2 gal7.5708 L
2.5 gal9.4635 L
3 gal11.356 L
4 gal15.142 L
5 gal18.927 L
6 gal22.712 L
7 gal26.498 L
8 gal30.283 L
9 gal34.069 L
10 gal37.854 L
12 gal45.425 L
15 gal56.781 L
20 gal75.708 L
25 gal94.635 L
30 gal113.56 L
40 gal151.42 L
50 gal189.27 L
60 gal227.12 L
75 gal283.91 L
100 gal378.54 L
125 gal473.18 L
150 gal567.81 L
200 gal757.08 L
250 gal946.35 L
300 gal1135.6 L
400 gal1514.2 L
500 gal1892.7 L
600 gal2271.2 L
750 gal2839.1 L
1000 gal3785.4 L
1500 gal5678.1 L
2000 gal7570.8 L
2500 gal9463.5 L
3000 gal11356 L
4000 gal15142 L
5000 gal18927 L
7500 gal28391 L
10000 gal37854 L
15000 gal56781 L
20000 gal75708 L
25000 gal94635 L
30000 gal113562 L
40000 gal151416 L
50000 gal189271 L
100000 gal378541 L

Real-world reference

A standard US milk jug holds 1 gal. An average car's fuel tank is 12–16 gal. In liters, that gives you: 1 gal = 3.78541 L, 10 gal = 37.8541 L, 100 gal = 378.541 L.

Frequently asked questions

How many liters are in 1 US gallon?
1 US gallon equals 3.78541 liters.
How do I convert US gallons to liters?
Multiply the US gallon value by 3.78541. So x gal × 3.78541 = the equivalent in L.
What is 5 US gallons in liters?
5 US gallons equals 18.9271 liters.
What is 10 US gallons in liters?
10 US gallons equals 37.8541 liters.
What is 100 US gallons in liters?
100 US gallons equals 378.541 liters.
How do I convert back from liters to US gallons?
Multiply the liter value by 0.264172. For example, 1 L = 0.264172 gal.
Is the US gallon bigger than the liter?
Yes. 1 US gallon is larger than 1 liter — specifically 3.78541 times larger.
Are these conversion factors exact?
Yes. The factor of 3.78541 is derived directly from the SI definitions of US gallon and liter.

About the US gallon and the liter

The US gallon

The US liquid gallon equals exactly 3.785411784 liters, defined as 231 cubic inches. It is the standard fuel and milk unit in the United States. The US gallon is about 16.7% smaller than the UK (imperial) gallon (4.54609 L), so quoting fuel economy as 'mpg' without specifying the gallon can mislead by a wide margin.

The liter

The liter (L) is a metric unit of volume defined as exactly one cubic decimeter (1 dm³). Although not an SI base unit (the SI unit of volume is the cubic meter), it is the most common metric volume unit in everyday life, used for beverages, fuel, and chemistry. One liter of pure water at 4 °C weighs almost exactly one kilogram.

Related converters

Liters to US gallons
L → gal
Milliliters to Liters
mL → L
Milliliters to US gallons
mL → gal
Milliliters to US fluid ounces
mL → fl oz
Milliliters to US cups
mL → cup
Milliliters to US pints
mL → pt

Sources