Volume Calculator › Gallons to Liters

Gallons to Liters Converter

Convert US gallons to litres and back, the US and metric units for liquid volume.

US gallons ⇄ Litres
gal
=
L
Result1 gal = 3.79 L
Quick answer
One US gallon is 3.78541 litres, so multiply gallons by 3.785 to get litres. Going back, one litre is 0.264 gallons. Note the UK (imperial) gallon is larger, at 4.546 litres, so make sure you mean the US gallon.

Conversion table

US gallons (gal)Litres (L)
1 gal3.79
2 gal7.57
5 gal18.93
10 gal37.85
20 gal75.71
50 gal189.27
100 gal378.54
250 gal946.35

How to convert Gallons to Liters

litres = US gallons × 3.78541reverse: gallons = litres × 0.2642
gal
volume in US gallons
L
volume in litres
3.78541
litres in a US gallon

This is the US gallon. A UK imperial gallon is 4.546 litres, about 20 percent larger, so US and UK gallons are not interchangeable.

Frequently asked questions

How many litres in a US gallon?

About 3.785 litres.

How many gallons is 10 litres?

About 2.64 US gallons.

Is a UK gallon the same?

No, an imperial gallon is 4.546 litres, larger than the US gallon.

How do I convert gallons to litres?

Multiply by 3.785 for US gallons.