ML to US Fluid Ounces Converter
Enter a volume in millilitres to see US fluid ounces. Nutrition labels in the United States use this fluid ounce, which is not the Imperial fluid ounce.
How it works
A US liquid gallon is 128 US fluid ounces, so 1 US fl oz = 3.785411784 L ÷ 128 = 29.5735295625 mL. Dividing millilitres by that constant yields US fl oz. 100 mL is about 3.3814 US fl oz. An Imperial fluid ounce is 28.4130625 mL — close enough to confuse a recipe, different enough to matter.
Formula
US fl oz = millilitres ÷ 29.5735295625
Worked examples
- 100 mL → 3.3814 US fl oz
- 29.5735295625 mL → 1 US fl oz
Useful notes
- US fluid ounce (volume), not an avoirdupois ounce (mass).
- Imperial fl oz is smaller (~28.41 mL) and is not used here.
FAQ
- How many US fluid ounces are in 100 mL?
- About 3.3814 US fl oz (100 ÷ 29.5735295625).
- Is this the same as a weight ounce?
- No. Fluid ounces measure volume. Weight ounces are on the grams converter.
- What about Imperial fluid ounces?
- An Imperial fl oz is 28.4130625 mL. Using this US converter on a UK recipe will slightly overstate the US ounce count.
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