Volume converter
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 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.
Related tools
Last updated: 15 July 2026