CompoundPage

Liters to US gallons (L to gal)

To convert liters to US gallons (L to gal): one liter is 0.26417205 US gallons, so 20 L is 5.28344 gal.

Swap units: gal to L

In US gallons5.28344 gal

Conversion factor Exact by definition. The inch has been exactly 2.54 cm and the pound exactly 0.45359237 kg since the 1959 international yard and pound agreement, so these are not measurements that can drift.
1 liter = 0.2641720524 US gallons
The other way
1 US gallon = 3.785411784 liters
Working
20 x 0.2641720524 = 5.28344
20 L in every unit
20,000 ml 20 L 4,057.7 tsp 1,352.6 tbsp 676.28 fl oz 84.535 cup 42.268 pt 21.134 qt 5.2834 gal 4.3994 imp gal 0.70629 cu ft 0.026159 cu yd 0.02 m3
liters to US gallons
Lgal
10.264172
20.528344
51.32086
102.64172
256.6043
5013.2086
10026.4172

How the Unit Converter works

One liter is 0.2641720524 US gallons. Both units are defined against the same SI base unit, so the factor is derived from two exact definitions rather than measured. It is exact in principle and does not land on a round number.

Worked through: 10 L x 0.264172052 = 2.64172 gal.

Going the other way, one US gallon is 3.785411784 liters.

To convert without a calculator, multiply by 0.2642. Rounding that to 0.26 is within 1.6% for most purposes.

A US gallon, which is 3.785 liters. An imperial gallon is 4.546, 20% larger, so British and American fuel economy figures are not comparable without converting, and a 40 mpg British car is about 33 mpg American.

Precision is worth matching to the input. A measurement given as 1 L carries one or two significant figures, and reporting its conversion to six implies a precision the original never had.

Unit Converter FAQ

How many US gallons are in a liter?

0.26417205. The factor is derived from the definitions of both units against the same SI base, so it is exact in principle but not a round number.

What is 20 L in US gallons?

5.28344 gal. Multiply by 0.26417205: 10 L x 0.264172052 = 2.64172 gal.

How do I convert US gallons back to liters?

Divide by 0.26417205, or equivalently multiply by 3.7854118. One US gallon is 3.7854118 liters. The two factors are reciprocals, so you only need to remember one of them.

Is there anything to watch out for with this conversion?

A US gallon, which is 3.785 liters. An imperial gallon is 4.546, 20% larger, so British and American fuel economy figures are not comparable without converting, and a 40 mpg British car is about 33 mpg American.

More from the Unit Converter

Related calculators

Embed this calculator
<div id="compoundpage-unit-converter"></div>
<script src="https://compoundpage.com/embed/unit-converter.js" async></script>

The same calculation as JSON