Volume converter
1 US gallon is 3.785 l, 1 UK gallon is 4.546 l. Convert litres and millilitres to gallons, pints or fluid ounces – including the differences between US and UK units.
1 gal (US)=3.7854118 l
Conversion to all units
| millilitre (ml) | 3,785.4118 |
| centilitre (cl) | 378.54118 |
| decilitre (dl) | 37.854118 |
| litre (l) | 3.7854118 |
| hectolitre (hl) | 0.037854118 |
| cubic metre (m³) | 0.0037854118 |
| gallon (UK) (gal (UK)) | 0.83267418 |
| pint (UK) (pt (UK)) | 6.6613935 |
| fluid ounce (UK) (fl oz (UK)) | 133.22787 |
How volume conversion works
The converter calculates through the base unit litre and covers metric units (ml, cl, dl, l, hl, m³) as well as imperial units, where you need to watch out for the difference between the US and UK versions.
A US gallon is 3.785 l, a UK (imperial) gallon 4.546 l. A UK pint is 568 ml – exactly the size of a classic beer in a British pub. A cubic metre corresponds to exactly 1,000 litres.
Conversion examples
| Value | Result |
|---|---|
| 1 gal (US) | 3.78541 l |
| 1 gal (UK) | 4.54609 l |
| 1 pt (UK) | 0.568261 l |
| 10 l | 2.64172 gal (US) |
| 1 m³ | 1,000 l |
| 330 ml | 11.6144 fl oz (UK) |
Frequently asked questions
How many US gallons are in 10 litres?
10 l is roughly 2.64 US gallons (exactly 2.6417205236 gal).
How many UK fluid ounces are in 330 ml?
330 ml is roughly 11.61 UK fluid ounces (fl oz).
How many litres are in a gallon?
It depends which one: a US gallon is 3.785 l, a UK (imperial) gallon 4.546 l. The difference is about 20%, which is why the converter offers both units separately.
How many millilitres are in a pint?
A UK pint is 568.26 ml. A US pint is smaller – 473 ml. In British pubs, beer is served in exact pints.
How many litres is a cubic metre?
1 m³ = exactly 1,000 litres. Conversely, 1 litre corresponds to 1 dm³, i.e. a cube with 10 cm edges.
What is a fluid ounce (fl oz)?
The fluid ounce is a small unit of volume: the UK one is 28.41 ml, the US one 29.57 ml. It is used mainly for drinks and cosmetics.
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Last updated: 15 July 2026