Milliliters to fluid ounces converter
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Convert milliliters to fluid ounces instantly: 1 ml is 0.0338 fl oz. Cans, doses and recipes, with the exact math and a copy button that works.
One fluid ounce is just about 30 ml — close enough that bartenders round without guilt.
work surface
Math, not advice — results are indicative. Read the disclaimer.
pro tips
Rough math: divide by 30. An espresso shot (~30 ml) is about 1 fl oz — the conversion bartenders have been doing forever.
A standard soda can is 355 ml = exactly 12 fl oz — the friendliest number on the whole shelf.
Medicine cups do this for you: one US teaspoon is 5 ml ≈ 0.17 fl oz per dose.
what it does
One milliliter is 0.033814 US fluid ounces. The whole trick is dividing by 29.57 — or by 30 if you're converting something you plan to drink. Do either and the fluid ounces appear, no jigger required.
Where it shows up: soda cans that say both numbers on the same shelf, medicine cups where the dose is in ml but the instructions are in ounces, cosmetics sold across borders, recipes with metric weights but American cup measures, and espresso shots that are basically one fluid ounce of confidence.
The rough version is bartender-grade: divide by 30 and pour. 150 ml of syrup becomes "about 5 ounces", which is exactly the precision a snowcone deserves. For medicine, use the real number — the widget below never rounds under pressure.
Type any number and the widget answers in fluid ounces instantly, with the math right there in the hint. Click the result to copy it, and hit swap when the recipe changes direction — the fluid-ounces-to-milliliters version is always one click away.
quick answers
How many ml is one fluid ounce?
29.57 ml in the US version. Divide by 30 and you're within 1.5% — fine for drinks, not fine for prescriptions.
Is 500 ml the same as 16 oz?
Almost — 500 ml is 16.91 fl oz. That's why the classic water bottle prints both numbers and lets them pretend to match.
Are US and imperial fluid ounces the same?
No — the US fluid ounce is 29.57 ml while the imperial (UK) one is 28.41 ml. Same name, different drink. This page converts US fluid ounces.
Why does the word "fluid" appear at all?
To keep ounces of volume apart from ounces of weight. A fluid ounce of syrup fills the same space as an ounce-weight of feathers — and weighs considerably more.