1 L = 0.2642 gal
Roughly a large water bottle. Multiply 1 L by 0.2641720524. The result is 0.2642 gal.
Fast answers, clean math
Liters to gallons converter
Enter liters and get US gallons instantly. This page also shows the formula so you can sanity-check the result.
Unit converter
Convert liters to US gallons
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Formula
How to convert liter to US gallon (L → gal)
One liter equals exactly 0.2641720524 US gallons. This is an exact definition, not an approximation, so the factor never changes.
Formula: US gallons = liters × 0.2641720524
To go the other way, multiply by 3.785411784: liters = US gallons × 3.785411784.
For example, 1 L × 0.2641720524 = 0.2642 gal.
| Liter (L) | Us gallon (gal) |
|---|---|
| 1 L | 0.2642 gal |
| 2 L | 0.5283 gal |
| 3 L | 0.7925 gal |
| 5 L | 1.3209 gal |
| 10 L | 2.6417 gal |
| 20 L | 5.2834 gal |
| 40 L | 10.5669 gal |
| 50 L | 13.2086 gal |
| 75 L | 19.8129 gal |
| 100 L | 26.4172 gal |
Step by step
Worked liter to US gallon examples
10 L = 2.6417 gal
Roughly a bucket. Multiply 10 L by 0.2641720524. The result is 2.6417 gal.
50 L = 13.2086 gal
Roughly a partial fuel tank. Multiply 50 L by 0.2641720524. The result is 13.2086 gal.
Background
What is a liter?
A liter is a metric unit of volume equal to one cubic decimeter, or 1,000 cubic centimeters (milliliters).
The liter was introduced in France in 1795 and remains the everyday metric volume unit, although the cubic meter is the formal SI unit.
Everyday scale: A liter is a little more than a US quart. A standard large water bottle is often one liter, and a kilogram of water occupies almost exactly one liter.
System: metric (SI).
Background
What is a US gallon?
A US gallon is a unit of volume defined as exactly 3.785411784 liters, made up of 4 quarts, 8 pints, or 128 US fluid ounces.
The US gallon is based on the old English wine gallon of 231 cubic inches. It is smaller than the imperial gallon used in the United Kingdom, which is about 4.546 liters.
Everyday scale: A US gallon of milk weighs about 8.6 pounds. A typical kitchen sink holds several gallons, and US fuel is sold by the gallon.
System: US customary.
Where it helps
When you need to convert liter to US gallon
Cooking and recipes
Recipes move between milliliters, liters, cups, and gallons depending on where they were written. Converting keeps liquid ratios correct so sauces, doughs, and drinks turn out as intended.
Fuel and automotive
Fuel economy and tank sizes are quoted in liters or gallons by region. Converting helps you compare prices, estimate range, and budget for a fill-up while traveling.
Home and garden
Paint, cleaning products, aquariums, and watering schedules list capacity in different volume units. Converting helps you buy the right amount and follow dilution instructions safely.
Accuracy
Precision and common mistakes
The liter to US gallon factor is exact by definition, so any error comes from rounding too early. Keep full precision through your calculation and round only the final answer to the precision your task needs.
A common mistake is rounding the conversion factor to two or three digits before multiplying, which can shift the result noticeably on large values. Multiply first, then round. Always keep the unit label with the number so the meaning is never lost.
| Use case | Good rounding |
|---|---|
| Drinks and everyday cooking | Common fractions or 1 decimal place |
| Baking liquids | 2 decimal places |
| Fuel and large containers | 1 decimal place |
| Lab and medical dosing | Use the exact factor, then round at the end |
Plain answers
Liter to US gallon FAQ
How do you convert liter to US gallon?
Multiply the number of liters by 0.2641720524. That single factor converts any liter value to US gallons.
How many US gallons are in one liter?
One liter equals 0.2641720524 US gallons.
What is 10 L in gal?
10 liters equals about 2.6417 US gallons.
Is the liter to US gallon conversion exact?
Yes. The factor is fixed by international definition, so liter to US gallon is an exact conversion rather than an estimate.
How can I estimate liter to US gallon in my head?
Divide liters by 3.8, so 10 liters is about 2.6 US gallons. Roughly 4 liters make a gallon.