Liters to Gallons Converter
A road-trip tourist refueling a rental car at a French autoroute service station watches the pump display tick past 50 liters and mentally translates to the 13.2 US gallons that the driving budget back home was sized around. Liters-to-gallons is the dominant fuel-economy conversion of European-and-American driving and one of the most-googled metric-imperial conversions on the entire web. The 0.2642 factor uses the US gallon (3.7854 L), distinct from the slightly larger Imperial gallon (4.5461 L) still used in the UK for some fuel pricing and in beer pints. Beyond fuel, the conversion runs through wine and beer making (a 50 L brewery batch is 13.2 gal of finished beer), aquarium hobbyism (a 200 L community tank is 52.8 gal worth of imported American livestock and equipment), pool chemistry, and household paint purchasing where European 5 L cans translate to 1.32 gal for American DIY shoppers comparing prices online.
Calculator
1 × 0.2641720524 = 0.2642
Formula
Multiply liters by 0.2641720524 to get US gallons. Equivalently, divide by 3.785411784 (the exact US gallon definition in liters). For mental math the rough multiplier is 0.26 or the rule one US gallon equals about 3.79 liters. Note that the US gallon and the Imperial (UK) gallon are different units — the Imperial gallon equals 4.546 L (about 20 percent larger), so US-gallon results don't apply to UK fuel-pricing or UK-published recipes that specify gallons. Power users memorize that 10 L equals 2.64 US gal, 50 L equals 13.21 US gal, and 100 L equals 26.42 US gal — the base anchors for fuel and home-brewing conversions.
Where You'll Use This
International fuel-economy comparison is the largest consumer-facing use of this conversion. American drivers comparing US-spec MPG ratings against European L/100km figures need to convert fuel volume between gallons and liters before the comparison is meaningful. Wine and craft-beer home production runs heavily on this conversion when European recipes specify batch sizes in liters but American fermenter and bottle-counting math defaults to gallons. Aquarium hobbyism is dominated by liter-spec European equipment (filters, heaters, lighting) that translates to American gallon-spec stocking guidelines. Swimming pool chemistry calculations frequently swap between liters (for European pool-chemical concentration specs) and gallons (for American total-volume estimation). Paint and stain purchasing for home renovation translates between European 5-liter cans and American 1-gallon cans on the price-per-volume comparison, with the 5 L being slightly larger than the 1 US gal (5 L = 1.32 gal). Even pet ownership intersects when an imported European-brand pet-food container is sized in liters and the American owner converts to gallons for cabinet storage planning.
Reference Table
| From (Liters) | To (Gallons) |
|---|---|
| 0.5 | 0.1321 |
| 1 | 0.2642 |
| 2 | 0.5283 |
| 3 | 0.7925 |
| 4 | 1.0567 |
| 5 | 1.3209 |
| 7.5 | 1.9813 |
| 10 | 2.6417 |
| 15 | 3.9626 |
| 19 | 5.0193 |
| 20 | 5.2834 |
| 25 | 6.6043 |
| 30 | 7.9252 |
| 40 | 10.567 |
| 50 | 13.2086 |
| 60 | 15.8503 |
| 75 | 19.8129 |
| 100 | 26.4172 |
| 150 | 39.6258 |
| 200 | 52.8344 |
| 250 | 66.043 |
| 300 | 79.2516 |
| 500 | 132.086 |
| 1000 | 264.172 |
| 2000 | 528.344 |
A Bit of History
The liter was defined in 1795 as part of the original French metric system as a cubic decimeter — exactly one thousand cubic centimeters of water. The US gallon descends from the English wine gallon of 1707 (Queen Anne's gallon), which Congress adopted as the American standard in 1832 at exactly 231 cubic inches. The 1959 international yard-and-pound agreement pinned the inch at 25.4 mm exactly, which made the US gallon equal to exactly 3.785411784 liters by downstream arithmetic. The Imperial gallon, defined in 1824 as the volume of 10 pounds of distilled water, equals about 4.546 L — which is why a UK pint (one-eighth of an Imperial gallon) is noticeably larger than a US pint (one-eighth of a US gallon).
FAQ
How many gallons is 50 liters?
Fifty liters equals 13.21 US gallons. This is roughly the fuel tank size of a typical mid-sized European sedan and a useful conversion benchmark for road-trip fuel budgeting.
Is 1 US gallon the same as 1 UK gallon?
No — the UK Imperial gallon equals 4.546 liters, while the US gallon equals 3.785 liters. The Imperial gallon is about 20 percent larger. This calculator uses the US gallon, so results don't apply directly to UK fuel-pricing or Imperial-recipe contexts.
How do I convert liters to gallons quickly?
Divide liters by 3.785, or multiply by 0.264. For mental math the rough rule is liters times 0.25 and add about 5 percent. Forty liters times 0.25 equals 10 gallons, plus 5 percent gets you 10.5 — close to the precise 10.57.
How many liters in 1 US gallon?
One US gallon equals exactly 3.785411784 liters. The figure is anchored to the inch via the 1832 American gallon definition (231 cubic inches) and the 1959 inch standardization (25.4 mm exactly).