Convert · volume

Fluid ounces to ml converter

Convert US fluid ounces to millilitres and back. A volume conversion: 1 US fl oz = 29.57 ml.

Convert volume

Cup size only affects conversions involving cups.
Result
Millilitres240ml
Cups1
Tablespoons16.23
Teaspoons48.7
Fluid ounces8.12
These are volume conversions — they don't depend on the ingredient. For weight (grams), the ingredient matters; use a cups-to-grams tool instead.

Fluid ounces and millilitres

A US fluid ounce is 29.5735 ml. Note this is a fluid ounce (volume), not a weight ounce — the two are different, and a fluid ounce of a dense liquid weighs more than one ounce by weight.

UnitIn millilitres
1 cup (US)240 ml
1 cup (metric)250 ml
1 tablespoon14.79 ml
1 teaspoon4.93 ml
1 fluid ounce (US)29.57 ml
How many ml in a fluid ounce?
One US fluid ounce is 29.57 ml. (A UK/imperial fluid ounce is slightly different at 28.41 ml.)
Is a fluid ounce the same as a weight ounce?
No. A fluid ounce measures volume; a weight ounce (28.35 g) measures mass. They only match for water-like densities by coincidence.

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