1 gal equals 3.78541 l. To convert Gallon (US) to Liter, multiply the value by 3.78541; divide by 3.78541 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert Gallon (US) to Liter?
The conversion formula is l = gal × 3.78541. The conversion factor is fixed by definition, so the result is always exact.
Gallon (US) to Liter conversion table
| gal | l |
|---|---|
| 1 gal | 3.78541 l |
| 2 gal | 7.57082 l |
| 5 gal | 18.9271 l |
| 10 gal | 37.8541 l |
| 20 gal | 75.7082 l |
| 50 gal | 189.271 l |
What is Gallon (US) (gal)?
The US gallon (gal) equals about 3.785 litres. It is the imperial unit for fuel and large liquid quantities in the US. (The UK gallon is larger, about 4.546 L.)
What is Liter (l)?
The litre (L) is the metric unit of volume, equal to one cubic decimetre. It is used for drinks, fuel and liquids worldwide.
Why convert Gallon (US) to Liter?
Metric countries measure liquids in litres and millilitres; the US uses gallons, quarts, cups and fluid ounces — and US and UK units differ. Recipes and fuel figures often need converting.
A US gallon is exactly 3.785411784 litres, while a UK (imperial) gallon is 4.54609 L — about 20% larger. One US fluid ounce is about 29.57 ml.
How to convert Gallon (US) to Liter
- Enter the value in Gallon (US) into the left field of the converter.
- Read the result in Liter instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (Liter to Gallon (US)).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.