Gallons (us) to Litres Converter
Convert gallon (US) to litre instantly. Type a value below — the result updates as you type.
When you need to convert gallon (US) to litre
Volume conversions show up most in the kitchen and at the pump — scaling a recipe written for another country, dosing a liquid, or comparing fuel and drink sizes between metric and US/UK measures.
Fuel economy, water tanks and large drink containers are typical litres-to-gallons conversions — remember US and UK gallons differ.
Typical values: 0.5 gal is about 1.8927 L, and 100 gal works out to roughly 378.5412 L. Because the ratio is fixed at 3.7854, you can scale any amount linearly — doubling the gallons (US) doubles the litres.
US and UK 'cups', 'pints' and 'gallons' differ, so always check which system a recipe or label uses before converting.
How to convert gallon (US) to litre
One gallon (US) equals 3.7854 litres. To convert, multiply the number of gallons (US) by 3.7854:
litres = gallons (US) × 3.7854
For example, 10 gallons (US) × 3.7854 = 37.8541 litres.
Gallons (us) to litres conversion table
| Volume (gal) | Litres (L) |
|---|---|
| 1 gal | 3.7854 L |
| 2 gal | 7.5708 L |
| 3 gal | 11.3562 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
| 20 gal | 75.7082 L |
| 50 gal | 189.2706 L |
| 100 gal | 378.5412 L |
FAQ
How many litres are in a gallon (US)?
One gallon (US) = 3.7854 litres.
How do I convert litres back to gallons (US)?
Divide by 3.7854, or use the litres to gallons (US) converter.