Updated 2026 · By ToolFern

Gallon to Liter Converter

Convert gallons to liters (gal to L) instantly. Type a value and get the answer live, or use the table below. 1 gal = 3.78541 L.

gal
=
L

How to convert gallons to liters

To convert gallons to liters, multiply the number of gallons by 3.78541. That is because 1 gal = 3.78541 L. For example, 10 gal = 37.8541 L.Enter any value in the box above and the answer updates instantly, no sign-up and nothing leaves your browser.

Gallon to Liter conversion table

Gallons (gal)Liters (L)
1 gal3.78541 L
2 gal7.57082 L
3 gal11.3562 L
5 gal18.9271 L
10 gal37.8541 L
20 gal75.7082 L
25 gal94.6353 L
50 gal189.271 L
100 gal378.541 L
1,000 gal3,785.41 L

Frequently asked questions

How many liters in a gallon?

1 gal = 3.78541 L. So 1 gallon equals 3.78541 liters.

What is the gal to L formula?

Gallons × 3.78541 = Liters.

Does it work in reverse?

Yes. Use the Liter to Gallon converter to go the other way.

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