Gallons to Liters Converter
Convert gallons to liters instantly, with every other common unit shown too. Free, and runs entirely in your browser — nothing is uploaded.
About Volume Converter
Converts a volume between metric units (millilitres, litres, cubic metres), US kitchen and liquid measures (teaspoons, tablespoons, fluid ounces, cups, pints, gallons), UK imperial measures (fluid ounces, pints, gallons) and cubic inches and feet. Every unit is shown at once from a single value.
The US and UK measures share names but not sizes. A UK pint is 20 UK fluid ounces and about 568 ml; a US pint is 16 US fluid ounces and about 473 ml. A UK gallon is about 4.55 litres and a US gallon about 3.79. Each is shown with its country, so a recipe or a fuel figure from one side of the Atlantic is not read with the other side's units.
Where it helps
- Metric, US, UK and cubic units side by side from one value.
- Keeps US and UK pints, gallons and fluid ounces apart, which most quick conversions mix up.
- Includes the kitchen measures a recipe uses: teaspoons, tablespoons and cups.
- Exact legal definitions, so 1 US cup comes out as exactly 16 tablespoons.
Limits
- It converts volume, not weight: a cup of flour and a cup of water weigh different amounts.
- Metric cups (250 ml) and Australian tablespoons (20 ml) are not listed separately from the US measures.
- Dry US measures, such as dry pints and bushels, are left out.
Frequently asked questions
How many millilitres are in a cup?
A US cup is 236.59 ml. Many recipes outside the US use a metric cup of 250 ml instead, so check which one a recipe was written with.
Is a UK pint the same as a US pint?
No. A UK pint is 568 ml and a US pint 473 ml, so a UK pint is about 20% larger. UK and US gallons differ in the same proportion.
How many litres are in a gallon?
A US gallon is 3.785 litres and a UK gallon 4.546 litres. Both are shown, since a figure from one country read in the other's gallons is out by a fifth.
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