ML to OZ Converter

How to convert milliliters to fluid ounces

1 milliliter = 0.0338140227 fluid ounces. To convert milliliters to fluid ounces, divide by 29.57352956 (or multiply by 0.0338140227). A milliliter is one thousandth of a liter, the same as one cubic centimeter. A US fluid ounce is 1/128 of a US gallon, exactly 29.5735295625 ml.

Worked examples

• 100 milliliters = 3.3814 fl oz (100 ÷ 29.57353)
• 330 milliliters = 11.1586 fl oz (330 ÷ 29.57353)
• 750 milliliters = 25.3605 fl oz (750 ÷ 29.57353)

Where this conversion comes up

Milliliters are used for medicine doses, drinks, perfume and recipes outside the US; fluid ounces for drink cans, baby bottles, cosmetics and US recipes. Covers drink cans (355 ml = 12 fl oz), wine bottles (750 ml = 25.4 fl oz) and the 100 ml airline liquid limit (3.4 fl oz). Results are US fluid ounces; a UK fluid ounce is slightly smaller (28.41 ml).

Quick estimate

Divide by 30 (1.4% low): 300 ml ≈ 10 fl oz, exact 10.14.

Common mistakes

• Multiplying instead of dividing. A fluid ounce is larger than a milliliter, so the number of fluid ounces must come out smaller: 100 milliliters = 3.3814 fl oz.
• Mixing fluid ounces with weight ounces. A fluid ounce is a volume (29.57 ml); an ounce on a kitchen scale is a weight (28.35 g). A cup of flour is 8 fl oz by volume but only about 4.25 oz by weight.
• Using the imperial (UK) unit. This page uses US measures. An imperial gallon is 4.546 L (20% more than a US gallon), an imperial pint 568 ml and an imperial fluid ounce 28.41 ml.
• Rounding too early. Keep the full factor until the last step; rounding 0.0338 to 0.03 first puts large values noticeably off.

Going the other way? Use the oz to ml converter. Related volume converters: liters to gallons, gallons to liters, liters to quarts, quarts to liters, gallons to quarts, oz to cups.