To convert US fluid oz to ml, multiply the US fluid ounce value by 29.5735. This is the exact NIST conversion factor. Use this converter when adapting American recipes to metric measurements — 8 US fl oz (1 US cup) = 236.588 mL.
View US fl oz to mL FormulaThe US fluid ounce equals 29.5735 mL. It is part of the US Customary System and used for cooking measurements, food labeling, and beverage servings in the United States. Converting US fl oz to mL is essential when following American recipes in metric countries.
A milliliter is 0.001 liters — the global standard for liquid measurement. When an American recipe says "8 fl oz" and you have metric tools, multiply by 29.5735 to get the precise mL amount.
Drag the slider to see how US fl oz scale to milliliters. 1 US fl oz = 29.57 mL.
To convert US fluid ounces to milliliters, multiply the fl oz value by 29.5735.
7 common US fl oz to mL conversions. Click any card to load it in the calculator.
Click any row to load it in the converter.
| US fl oz | Milliliters (mL) | Common Use |
|---|
236.588 mL equals 8 US fluid ounces, which is 1 US cup. This is the most common conversion for American baking recipes when using metric measuring tools.
473.176 mL equals 16 US fluid ounces (1 US pint). Many American drink bottles are sold in 16 oz sizes.
No. 1 US fl oz = 29.5735 mL. The "30 mL" approximation is 0.4265 mL too high. For cooking this is fine, but for medicine dosing and lab work, use the exact value.
US fluid ounces measure volume (how much space a liquid takes up), while avoirdupois ounces measure weight/mass. 1 fl oz of water weighs approximately 1.043 weight oz. They are not interchangeable — always check whether a recipe refers to fl oz (volume) or oz (weight).
33.814 US fl oz equals 1 liter (1000 mL). This means a 1-liter bottle is slightly more than 4 US cups (4 cups = 32 fl oz = 946.353 mL).