Litre to US Gallon Converter
Convert liters to gallons instantly. Free liters to gallons calculator with formula, examples and FAQs.
Quick answer
1 liters equals 0.264172 gallons. To convert liters to gallons, multiply the liters value by 0.264172 — so 10 liters = 2.64172 gallons. This factor is exact, and the reverse conversion (gallons to liters) simply divides by 0.264172 instead of multiplying.
Converted value
0.26
1.00 liters = 0.26 gallons
What is liters to gallons?
Litre and US Gallon both measure volume, so converting liters to gallons restates the same quantity in a different unit. Drivers, cooks and shoppers reach for this conversion regularly. The relationship is fixed and linear, which means one factor (gallons = liters × 0.264172) maps every liters value to its exact gallons equivalent.
Real-world uses: why convert liters to gallons?
Converting liters to gallons bridges two ways of measuring the same thing. People do it most often when converting fuel economy and tank sizes to gallons, and on the receiving side when checking tank and drum capacities. Having the exact value — not a rough estimate — prevents costly mistakes in paperwork, purchases and planning.
- •Converting fuel economy and tank sizes to gallons.
- •Scaling drink and recipe volumes.
- •Checking bottle and container capacities.
- •Comparing US product sizes.
- •Checking tank and drum capacities.
Who uses this conversion?
How the liters to gallons conversion is calculated
This is the same arithmetic that calculators and search engines use — no rounded shortcuts.
gallons = liters × 0.264172
- Both liters and gallons are defined in terms of the same base unit, the litre.
- 1 liters = 1 litre, and 1 gallons = 3.7854118 litre.
- Divide one definition by the other to get the conversion factor: 1 ÷ 3.7854118 = 0.2641721.
- So gallons = liters × 0.264172. Multiply any liters value by 0.2641721 to get the result in gallons.
Precision: The US unit definitions used here are exact, so the result is exact. We round the displayed figure to four decimal places.
Example calculations
- •1 liters = 0.2642 gallons
- •5 liters = 1.3209 gallons
- •10 liters = 2.6417 gallons
liters to gallons quick reference table
Common liters values converted to gallons, each calculated with the exact factor.
| liters | gallons |
|---|---|
| 10 | 2.6417 |
| 25 | 6.6043 |
| 50 | 13.2086 |
| 100 | 26.4172 |
| 250 | 66.043 |
| 500 | 132.086 |
| 1000 | 264.1721 |
| 2500 | 660.4301 |
| 5000 | 1320.8603 |
| 10000 | 2641.7205 |
Common mistakes to avoid
- •Converting in the wrong direction — multiplying when you should divide (or vice versa). Sanity-check whether gallons should come out larger or smaller than liters.
- •Rounding too early. Keep full precision during the calculation and round only the final gallons value.
- •Confusing US and metric measures — a US cup, US gallon and imperial gallon are all different sizes.
Common questions about volume conversions
Is this volume conversion exact?
Yes for defined units — 1 US gallon = 3.785411784 L and 1 US cup = 236.5882365 ml are exact. Just note that US and imperial gallons and cups are different sizes.
Why do my results differ?
The biggest cause is confusing US, imperial and metric measures, or using a rounded factor. We apply the exact US definitions throughout.
Metric or US units for volume?
Metric (litres, ml) is global; US customary (gallons, cups) is American. Always check whether a recipe means a US cup or a metric cup.
Can I round the result?
Yes — cooking tolerates rounding to whole ml or a fraction of a cup. Fuel and laboratory volumes may need more precision.
History of these units
History of the litre
metric
The litre was introduced in France in 1795 as the volume of one kilogram of water. It is the standard metric unit for liquids worldwide, from fuel to beverages.
History of the US gallon
US customary
The US gallon derives from the English wine gallon of 231 cubic inches, fixed at about 3.785 litres. It is standard for fuel and large liquid volumes in the United States.
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Frequently asked questions
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