Which fluid ounce is used — US or UK?

This converter uses the US fluid ounce (29.5735 mL). The UK imperial fluid ounce is slightly different at 28.4131 mL.

How accurate is this fl oz to mL converter?

This converter uses exact mathematical formulas for precise results.

Convert fluid ounces to milliliters instantly. Free online fl oz to mL volume converter.

Fluid Ounces (fl oz)

1 fl oz = 29.5735 mL

Multiply the value in fluid ounces by 29.5735 to get milliliters.