What Is the Ounces to Milliliters Converter?
This tool converts US fluid ounces (fl oz) into milliliters (mL), two common units of liquid volume. Fluid ounces are widely used in the United States for drinks, recipes, and packaging, while milliliters are the standard metric unit used in most of the world and in science. Converting between them is essential for following international recipes, measuring medication, or interpreting product labels.
How to Use It
Enter the number of US fluid ounces you want to convert and the calculator instantly returns the equivalent volume in milliliters. You can enter whole numbers or decimals (for example, 1.5 fl oz). The result updates using the exact conversion factor for accurate results.
The Formula Explained
The conversion uses a single multiplication:
$$\text{mL} = \text{fl oz} \times 29.5735296875$$
One US fluid ounce is defined as exactly \(29.5735295625\) mL, commonly rounded to \(29.5735\) mL. To go the other way (mL to fl oz), divide the milliliter value by \(29.5735296875\).
Worked Example
Suppose you have a standard 8 fl oz cup of water. Multiply: $$8 \times 29.5735296875 = 236.59 \text{ mL}$$ So an 8-ounce glass holds roughly 237 milliliters — close to a quarter of a liter.
FAQ
Is this US or UK fluid ounces? This converter uses US fluid ounces. A UK (imperial) fluid ounce equals about \(28.4131\) mL, so use a different factor for UK measurements.
How many mL are in 1 fluid ounce? About \(29.57\) mL.
How many mL in 16 fl oz (1 US pint)? \(16 \times 29.5735 \approx 473.18\) mL.
