Unit converter
US fluid ounces to millilitres.
Convert fl oz (US) to mL and mL to fl oz (US). Type in either box and the other follows. This uses the US fluid ounce of 29.5735 mL. The imperial fluid ounce is 28.4131 mL — a 4% difference that compounds across a recipe.
| fl oz (US) | mL |
|---|---|
| 1 fl oz (US) | 29.5735 mL |
| 2 fl oz (US) | 59.1471 mL |
| 3 fl oz (US) | 88.7206 mL |
| 4 fl oz (US) | 118.294 mL |
| 5 fl oz (US) | 147.868 mL |
| 6 fl oz (US) | 177.441 mL |
| 8 fl oz (US) | 236.588 mL |
| 10 fl oz (US) | 295.735 mL |
| 12 fl oz (US) | 354.882 mL |
| 16 fl oz (US) | 473.176 mL |
| 20 fl oz (US) | 591.471 mL |
| 32 fl oz (US) | 946.353 mL |
- Conversion goes through m³ in both directions, so neither figure is rounded on the way.
Definitions
- The US fluid ounce is 29.5735 mL — about 4% larger than the imperial fluid ounce, which is 28.4131 mL.
- The millilitre is exactly one cubic centimetre. Medicine doses and recipe liquids are measured in it worldwide.
- This conversion is exact by definition. 1 fl oz (US) = 29.57352956 mL.
- US and imperial units of the same name are different sizes. A US pint is 473 mL; an imperial pint is 568 mL. Every unit below says which system it belongs to.
How it works
One direction multiplies and the other divides by the same number, so nothing is lost by going back and forth.
The value passes through m³, the unit every other volume & capacity unit on the site is defined against, rather than a number written into this page on its own. That is why the figure here, the figure in the table above and the general volume & capacity converter always agree.
Display precision sets a maximum number of significant figures and trims trailing zeroes, so it changes what you see and never what was calculated. The editable box always holds a plain number at full working precision, so you can carry on from either side.
Common questions this answers: how many millilitres in a fluid ounce (us) (29.5735), how many US fluid ounces in a millilitre (0.033814), and what 12 fl oz (US) is in millilitres (354.882 mL).
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