Liters to Gallons

Convert liters to gallons instantly, or swap to convert gallons to liters, in US or UK units.

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Liters

Convert L to gal.

Decimal places

Gallon type

US gallons

0.264172 gal

Decimal result uses automatic precision.

UK (imperial) gallons

0.219969 imp gal

The same amount in the other measuring system.

Liters to us gallons conversion table
Liters (L)	US gallons (gal)	UK (imperial) gallons (imp gal)
1	0.264172	0.219969
2	0.528344	0.439938
5	1.32086	1.09985
10	2.64172	2.19969
20	5.28344	4.39938
50	13.2086	10.9985
100	26.4172	21.9969
200	52.8344	43.9938

The reference table uses automatic precision.

Common liter sizes in US and imperial gallons
Liters	US gallons (gal)	UK (imperial) gallons (imp gal)
1 L	0.264172	0.219969
2 L	0.528344	0.439938
4 L	1.05669	0.879877
5 L	1.32086	1.09985
10 L	2.64172	2.19969
20 L	5.28344	4.39938
40 L	10.5669	8.79877
50 L	13.2086	10.9985
60 L	15.8503	13.1982
100 L	26.4172	21.9969

US gallons are liters ÷ 3.785411784; imperial (UK) gallons are liters ÷ 4.54609. A US gallon is about 83% of an imperial gallon.

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Results are provided as is, for general information. Check anything important before relying on it. See the Terms of Use.

About this tool

Convert liters (L) to gallons (gal), or gallons to liters, for fuel and fuel economy, aquariums, water tanks, paint and cooking volumes. One US gallon is exactly 3.785411784 liters, so divide liters by 3.785411784 to get US gallons, or swap direction to multiply gallons by 3.785411784. The UK (imperial) gallon is larger, at exactly 4.54609 liters, and its result is shown alongside; use the gallon type selector to make the imperial gallon the main result. Choose automatic precision or 0, 2, 4 or 6 decimal places. A chart below lists common sizes in both systems.

How it works

US gallons = liters ÷ 3.785411784
liters = US gallons × 3.785411784
UK gallons = liters ÷ 4.54609

A US gallon is exactly 3.785411784 liters (231 cubic inches) and a UK (imperial) gallon is exactly 4.54609 liters. The converter keeps the exact factors and rounds only the displayed answer.

Worked examples
Question	Working	Answer
10 L in US gallons	10 ÷ 3.785411784	2.64172 gal
20 L in US gallons	20 ÷ 3.785411784	5.28344 gal
10 L in UK gallons	10 ÷ 4.54609	2.19969 imp gal
5 US gallons in liters	5 × 3.785411784	18.9271 L

When to use it

Reading a fuel tank, aquarium, paint or water container size given in the other unit.

Converting a US gallon figure to liters for a metric country, or the reverse.

Telling US and UK gallons apart when a source does not say which one it means.

Questions

How do I convert liters to gallons?

Divide liters by 3.785411784 to get US gallons. Multiplying by about 0.264172 gives the same result. For example, 10 L is approximately 2.64172 US gallons and 50 L is approximately 13.2086 US gallons.

How many liters are in a gallon?

One US gallon is 3.785411784 liters, usually rounded to 3.785. One UK (imperial) gallon is exactly 4.54609 liters.

How do I convert gallons to liters?

Multiply gallons by 3.785411784 for US gallons. For example, 5 gallons is approximately 18.9271 liters and 10 gallons is approximately 37.8541 liters. Use Swap, then enter gallons to convert in this direction.

Are US and UK gallons the same?

No. A US gallon is 3.785 liters and a UK (imperial) gallon is 4.546 liters, so a US gallon is about 83% of an imperial gallon. This converter shows both; the gallon type selector chooses which one is used when you swap to convert gallons to liters.

How many gallons is 20 liters?

20 liters is approximately 5.28344 US gallons, or approximately 4.39938 UK (imperial) gallons.

Sources

NIST: standard unit conversion factors

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