Converters

Milliliters to Fluid Ounces Converter

Convert milliliters to fluid ounces instantly. 1 ml = 0.033814 fl oz.

Enter a value above to see the conversion.

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Milliliters to Fluid Ounces Formula

The conversion from milliliters to fluid ounces uses a fixed mathematical relationship.

fl oz = ml × 0.033814

Example: 250 ml × 0.033814 = 8.454 fl oz

About the Milliliters to Fluid Ounces Conversion

Milliliters are the standard unit for liquids in most of the world — beverages, medicines, and cooking ingredients are all labelled in ml on metric packaging. US fluid ounces remain the primary liquid volume unit in the United States. This conversion is essential when reading American recipes, comparing international product sizes, or travelling between metric and imperial countries.

One US fluid ounce equals exactly 29.5735295625 ml. Note that the UK imperial fluid ounce is slightly different at 28.4131 ml — this converter uses the US definition. Key benchmarks: 250 ml ≈ 8.5 fl oz, and a 500 ml water bottle ≈ 16.9 fl oz.

Frequently asked questions

How many fluid ounces is one milliliter?
One milliliter equals approximately 0.033814 US fluid ounces. Conversely, 1 US fluid ounce equals exactly 29.5735 ml. This conversion is commonly needed for beverage sizing, liquid medicine dosing, and international recipe comparison.
How many fl oz is 500 ml?
500 ml equals approximately 16.907 fl oz (500 × 0.033814 = 16.907). A standard 500 ml water bottle is just under 17 US fluid ounces and is often labelled as 16.9 fl oz on products sold in the American market.
How many fl oz is 250 ml?
250 ml equals approximately 8.454 fl oz (250 × 0.033814 = 8.454). This is very close to one US cup (8 fl oz = 236.6 ml), making 250 ml a convenient metric approximation for one cup in most cooking contexts.
Is a UK fluid ounce the same as a US fluid ounce?
No. A US fluid ounce equals 29.5735 ml, while a UK imperial fluid ounce equals 28.4131 ml — about 4% smaller. This difference is important when following UK recipes or product labels to avoid measurement errors in cooking and baking.
How many ml is 8 fl oz, or one cup?
8 US fluid ounces equals approximately 236.59 ml (8 × 29.5735 = 236.588). This equals one US cup, the standard volume unit in American cooking recipes and one of the most commonly referenced liquid volume conversions.

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