Convert liter to gallon (US).

About this conversion

Liters to US gallons: multiply by 0.264172. Used when reading European fuel tank sizes, beverage volumes, and water consumption figures.

Formula

gal-us = L × 0.264172

Real-world examples

Reference values

Tips & tricks

• A 2-liter soda bottle is 0.528 US gal — about half a gallon, hence the common substitution at parties.
• EU car fuel tanks are typically 40-60 L (10.6-15.9 US gal); US car tanks 12-25 US gal (45-95 L).
• A swimming pool of 20,000 L holds about 5,280 US gal — the same number as feet in a mile, an easy memory peg.

Origin & history

See gal → L.

What is a liter?

One liter equals exactly 1,000 milliliters or 0.001 cubic meters. Beverages, fuel, and most everyday liquid measurement worldwide.

What is a US gallon?

One US gallon equals exactly 3.785411784 liters or 128 US fluid ounces. Gasoline, milk, paint, and most US liquid measurement.

Real-world examples of L

It's often easier to understand a unit when paired with familiar examples.

• 1 L — about a large water bottle.
• 2 L — about a typical soda bottle.
• 4 L — roughly a US gallon of milk.

How to convert liter to US gallon

To convert a value from liter (L) to US gallon (gal (US)), apply the conversion factor shown in the formula above. The calculation is the same whether you do it by hand, in a spreadsheet, or with the live converter on this page.

Steps:

1. Take your input value in L.
2. Apply the formula see formula above.
3. The result is your value in gal (US).

For repeated calculations, save the formula in a spreadsheet or use the live converter at the top of this page — it handles the math automatically and displays the result as you type.

Frequently asked questions

How do I convert L to gal (US)?

Apply the formula L → gal (US) shown above, or just type your value into the converter at the top of this page. The result updates instantly.

Which is bigger, L or gal (US)?

This depends on the conversion ratio in the formula. If the factor multiplied by your value gives a larger number, then gal (US) is the smaller unit (so it takes more of them to express the same quantity). If the result is smaller, then gal (US) is the larger unit.

When would I use L versus gal (US)?

Both units measure volume, so the choice depends on context. Liter is typically used for cooking, beverages, fuel, and industrial fluid handling; US gallon similarly. Most professional fields standardize on one or the other based on regional conventions or technical tradition.

How precise is this L to gal (US) conversion?

The conversion factor shown is the internationally defined exact value (or the best-published approximation if the relationship is irrational, like degrees-to-radians). The live converter on this page uses double-precision floating-point math, accurate to about 15 significant digits — far beyond any practical engineering need.

Is the conversion ratio exact, or an approximation?

Most unit conversions between SI metric units, and between SI and US customary units, have been formally defined as exact values since the 1959 international yard-pound agreement and subsequent SI redefinitions. Exceptions are unit pairs that involve irrational numbers (radians, e.g.) or empirical conversions (like food calories, which depend on temperature). When in doubt, consult the formula at the top of this page.

Related conversions

See also