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Science — Conversions
Fluid Ounces to Millilitres Converter
Enter fluid ounces or millilitres (or cups, tablespoons, teaspoons) and see every unit at once.
Millilitres
—
Converted value.
| Fluid ounces | — |
|---|---|
| Millilitres | — |
| Cups | — |
| Tablespoons | — |
| Teaspoons | — |
| Litres | — |
Show our math
Enter your figures above to see the step-by-step working.
US customary unitsEverything computed client-side — nothing leaves this page
How the Fluid Ounces to Millilitres Converter Works
Fluid ounces and millilitres both measure liquid volume — fluid ounces in the US customary system, millilitres in the metric. One US fluid ounce equals about 29.5735 millilitres, so to convert fluid ounces to millilitres you multiply by 29.5735, and to go back you divide. The converter also shows cups, tablespoons, teaspoons and litres.
It converts your value to millilitres first, then out to every unit, so the numbers stay consistent whichever unit you start from — handy for recipes, medicine doses and drink measures. Note these are US customary units; a UK fluid ounce is slightly different.
millilitres = fluid ounces × 29.5735
Frequently Asked Questions
How many ml is a fluid ounce?
One US fluid ounce is about 29.5735 millilitres. So 8 fl oz — a standard cup — is roughly 236.6 ml.
Are US and UK fluid ounces the same?
No. A US fluid ounce is 29.5735 ml, while a UK (imperial) fluid ounce is about 28.4131 ml. This converter uses US customary units.
How many fluid ounces are in a cup?
A US cup is 8 fluid ounces, which is about 236.6 ml. A tablespoon is half a fluid ounce, and there are 3 teaspoons in a tablespoon.
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