Millilitres to Fluid ounces (US) Converter (ml to fl oz)

Convert millilitres to fluid ounces (us) instantly. 1 ml = 0.0338 fl oz. Includes the formula, a full conversion table and a calculator that works offline.

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The formula

To convert millilitres to fluid ounces (us), multiply by 0.0338:

fl oz = ml × 0.0338

Going the other way, divide instead — or multiply by 29.574, which is the same thing:

ml = fl oz × 29.574

Millilitres to Fluid ounces (US) conversion table

MillilitresFluid ounces (US)
1 ml0.0338 fl oz
2 ml0.0676 fl oz
3 ml0.1014 fl oz
4 ml0.1353 fl oz
5 ml0.1691 fl oz
6 ml0.2029 fl oz
7 ml0.2367 fl oz
8 ml0.2705 fl oz
9 ml0.3043 fl oz
10 ml0.3381 fl oz
15 ml0.5072 fl oz
20 ml0.6763 fl oz
25 ml0.8454 fl oz
30 ml1.014 fl oz
40 ml1.353 fl oz
50 ml1.691 fl oz
75 ml2.536 fl oz
100 ml3.381 fl oz
250 ml8.454 fl oz
500 ml16.907 fl oz
1000 ml33.814 fl oz

Fluid ounces (US) to Millilitres

Fluid ounces (US)Millilitres
1 fl oz29.574 ml
2 fl oz59.147 ml
3 fl oz88.721 ml
4 fl oz118.29 ml
5 fl oz147.87 ml
6 fl oz177.44 ml
7 fl oz207.01 ml
8 fl oz236.59 ml
9 fl oz266.16 ml
10 fl oz295.74 ml

What that actually looks like

A conversion factor is hard to judge on its own. These are quantities most people already have a feel for, converted for you:

Why both units are still in use

Volume has a hidden complication: the US and imperial systems use the same words for different amounts. A US gallon is 3.785 litres, while an imperial gallon is 4.546 litres — about 20 percent larger. The same is true of pints and fluid ounces. This page uses US measures, which is what recipes and fuel prices mean unless they say otherwise.

Mistakes worth avoiding

Check whether a recipe is American or British before converting. A US cup is 237 ml and an imperial cup is 284 ml, which is enough of a difference to ruin baking. If a recipe lists ounces for a solid ingredient it means weight, not fluid ounces.

The other habit worth breaking is rounding too early. Convert first, round once at the end, and you avoid the drift that turns a small approximation into a visible error by the third calculation.

Doing it in your head

When you only need a rough answer, divide by 29 — which lands within 2.0 percent of the true value. Ten millilitres works out at roughly 0.3448 fluid ounces (US) that way, against 0.3381 exactly. An estimate is enough for deciding whether something will fit or whether a figure sounds plausible. When the number has to be right — because you are buying, cooking or building to it — use the calculator and let it carry the decimals.

Common questions

How many fluid ounces (us) are in one millilitre?

One millilitre equals 0.0338 fluid ounces (us). The calculator above handles any value, including decimals and very large numbers, and updates as you type.

Is this an exact conversion?

The factor is accurate to the precision shown, which is far beyond what any practical measurement requires. The table rounds for readability; the calculator does not.

Does this work offline?

Yes. The conversion runs in your browser with no network request, so it works on a plane, in a basement, or on a phone with no signal once the page has loaded.