Gallons to Liters Converter

Enter a value in gallons to get the result in liters instantly — or type in either box to convert both ways.

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How to convert Gallons to Liters

To convert gallons to liters, multiply by 3.7854118. For example, 5 gal × 3.7854118 = 18.927059 l.

Gallons to Liters conversion table

Gallons (gal)Liters (l)
0.250.946353
0.51.892706
13.785412
27.570824
311.356235
518.927059
1037.854118
1556.781177
2075.708236
2594.635295
50189.27059
75283.90588
100378.54118
250946.35295
5001892.7059
10003785.4118

About the units

Gallons (US) (gal) — the US liquid gallon, exactly 3.785411784 liters, used for fuel and milk in the US.

Liters (l) — a metric unit of volume equal to 1,000 cubic centimeters, used for drinks and fuel.

Frequently asked questions

How many liters are in one gallon?

One gallon equals 3.7854118 liters.

What is the formula to convert gallons to liters?

Multiply the value in gallons by 3.7854118. For example, 10 gal × 3.7854118 = 37.854118 l.

How do I convert liters back to gallons?

Divide by 3.7854118 — or multiply by 0.26417205. You can also type directly in the second box of the converter above.

Is this converter accurate?

Yes. It uses the internationally defined conversion factors (for example, 1 inch = 2.54 cm exactly and 1 pound = 0.45359237 kg exactly) and shows up to 10 significant digits.

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