Ounces to Milliliters Calculator
Convert US fluid ounces to milliliters for recipes, drinks, liquid medicine cups, and product labels. The form has one input, Volume in Fluid Ounces, and returns Milliliters rounded to two decimal places.
How to use this calculator
Enter a nonnegative number of US fluid ounces. The calculator multiplies by the milliliter factor and displays the result. For cup-based recipes, see the milliliters to cups calculator. For weight ounces, use the ounces to grams calculator instead.
US Fluid Ounces Formula
One US fluid ounce equals about 29.5735 milliliters.
Worked example
For a standard 12 fl oz beverage:
The calculator displays 354.88 ml.
Common liquid conversions
| US fl oz | Milliliters |
|---|---|
| 1 | 29.57 mL |
| 2 | 59.15 mL |
| 8 | 236.59 mL |
| 12 | 354.88 mL |
| 16 | 473.18 mL |
Important Unit Note
A US fluid ounce is not the same as an imperial fluid ounce, which is about 28.4131 mL. If you are following a UK, Australian, or older Commonwealth recipe, check which fluid ounce system the source uses. For larger liquid amounts, the volume converter gives more unit options.