Litres to US gallons
Multiply litres by 0.264172 to get US gallons.
5 L = 1.3209 gal
How to convert litres to US gallons
The US gallon is the US liquid gallon, exactly 231 cubic inches (3.785411784 litres). The litre is a cubic decimetre (0.001 m³), the SI-accepted metric unit of volume.
Worked example — 5 L: 5 × 0.264172 = 1.3209 gal.
Litres to US gallons table
| Litres | US gallons |
|---|---|
| 1 L | 0.264172 gal |
| 2 L | 0.528344 gal |
| 3 L | 0.792516 gal |
| 4 L | 1.0567 gal |
| 5 L | 1.3209 gal |
| 10 L | 2.6417 gal |
| 20 L | 5.2834 gal |
| 50 L | 13.2086 gal |
| 100 L | 26.4172 gal |
Reverse and related
About litres and US gallons
Litre (L)
1 L = 0.264172 galDefinition. A cubic decimetre (0.001 m³), the SI-accepted metric unit of volume
History and origin
The litre was introduced in France in 1795 as a unit of volume, defined as one cubic decimetre. It is not an SI base unit but is accepted for use with the SI.
Current use
Litres measure drinks and bottles, fuel and engine sizes across the metric world, and appear on beverage containers almost everywhere.
Source: BIPM SI Brochure (2019); the litre is an SI-accepted unit (1 L = 1 dm³)
US gallon (gal)
1 gal = 3.7854 LDefinition. The US liquid gallon, exactly 231 cubic inches (3.785411784 litres)
History and origin
The US gallon derives from the old English wine gallon of 231 cubic inches, a value the United States kept when Britain moved to a larger imperial gallon in 1824. It equals exactly 3.785411784 litres.
Current use
The gallon is the everyday US unit for fuel, milk and paint; the imperial gallon used in the UK and Canada is about 20 percent larger.
Source: NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents)
Where people use this
Litres: drinks and bottles, fuel, engine sizes. US gallons: fuel in the US, large containers, paint. A 3.79 L jug is 1 US gallon.
Every value is carried to full double precision; the display is rounded.
Sources: NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents); BIPM SI Brochure (2019); the litre is an SI-accepted unit (1 L = 1 dm³).
Questions people ask
How many gallons is 1 litre?
One litre is about 0.264 US gallons. To convert litres to US gallons, divide by 3.785.
How many gallons is 5 litres?
5 litres is about 1.32 US gallons, and 10 litres is about 2.64 gallons.
How many litres in a US gallon?
One US gallon is about 3.785 litres.
Is a US gallon the same as a UK gallon?
No. The imperial (UK) gallon is about 4.55 L, roughly 20% larger than the US gallon.