Convert Liters to Gallons
Multiply liters by 0.2642 to get US gallons — convert fuel tanks, aquariums, and US recipe volumes without the mental math.
- Milliliter (mL)1,000
- Liter (L)1
- Cubic Meter (m³)0.001
- Gallon (US gal)0.264172
- Cup (US cup)4.226753
- Fluid Ounce (fl oz)33.81402
- Hop (홉)5.555556
- Doe (되)0.555556
- Mal (말)0.055556
🔒 Unit conversions are computed in your browser.
The formula
One liter equals 0.264172 US gallons, which rounds to 0.2642 for everyday use, so the rule is simply liters × 0.2642 = US gallons. For example, 10 L × 0.2642 = 2.642 gal and 50 L × 0.2642 = 13.21 gal. To go the other way, multiply US gallons by 3.78541 (1 US gal = 3.78541 L). Just type your figure into the converter above and it returns the decimals instantly — no calculator or mental arithmetic required.
Where you'll actually use it
Fuel is the most common case: a 60 L car tank is 60 × 0.2642 = 15.85 US gal, so you can compare it directly against a US price-per-gallon. Aquariums are another — a 200 L tank equals 52.84 US gal, handy when a US-made filter or heater is rated in gallons. In the kitchen, a 5 L jug is 1.321 gal, and a US recipe calling for '1 gallon of stock' means roughly 3.79 L.
Watch out (US vs Imperial)
The biggest trap is that 'gallon' isn't a single unit. This tool uses the US liquid gallon (1 gal = 3.785 L), giving 1 L = 0.2642 gal, but the Imperial gallon used in the UK and Canada is 4.546 L, so there 1 L = 0.220 gallon — about a 20% difference. The US also has a separate dry gallon (4.405 L) for produce and grain. And because fuel expands as it warms, precise trade corrects volumes to 15°C. Remember 0.2642 is rounded, so errors grow with very large quantities.
Frequently asked questions
How do I convert liters to US gallons?
Multiply the number of liters by 0.2642. For example, 20 L × 0.2642 = 5.284 US gal. To reverse it, multiply gallons by 3.78541 to get liters.
What's the difference between US and Imperial gallons?
The US liquid gallon is 3.785 L, while the Imperial gallon is 4.546 L. So 1 L is 0.2642 US gallon but only 0.220 Imperial gallon — roughly a 20% gap. This converter uses the US gallon.
Is 0.2642 exact?
The exact factor is 0.264172; 0.2642 is a rounded version. It's fine for everyday use, but for large volumes like thousands of liters the small error accumulates, so use 0.264172 for precision.