Convert ml to fl oz
Convert ml to fl oz instantly. 1 ml = 0.033814 fl oz. Formula, worked examples and a quick reference table.
Last updated
One milliliter equals 0.033814 us fluid ounces. To convert any number of milliliters to us fluid ounces, multiply by 0.03381402.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Volume is the category where the US and imperial systems diverge most damagingly. Gallons, quarts, pints and fluid ounces all exist in two sizes that differ by up to 20%, and nothing in the name warns you which one a figure uses. Recipes, fuel economy figures and container capacities all cross borders regularly, so it is worth checking which system a source is using before converting rather than after.
ml to fl oz formula
To go the other way, use milliliter = us fluid ounce ÷ 0.03381402.
About these units
A millilitre is exactly one cubic centimetre. Because one millilitre of water weighs one gram, the unit doubles as a rough mass measure in the kitchen.
The US fluid ounce is 29.57 millilitres; the imperial fluid ounce is 28.41 ml. They are close enough to look interchangeable and far enough apart to spoil a recipe scaled up.
Milliliter is also written millilitre, millilitres, milliliters and cc. US Fluid Ounce is also written fluid ounce, fluid ounces, floz and oz.
Sources
- National Bureau of Standards, "Refinement of Values for the Yard and the Pound", Federal Register, 1 July 1959 — the international yard as exactly 0.9144 m and the avoirdupois pound as exactly 0.45359237 kg.
- NIST Special Publication 811, Guide for the Use of the International System of Units (SI), 2008 edition — conversion factors for units outside the SI.
ml to fl oz conversion table
| Milliliter | US Fluid Ounce |
|---|---|
| 1 ml | 0.03381 fl oz |
| 2 ml | 0.06763 fl oz |
| 3 ml | 0.1014 fl oz |
| 5 ml | 0.1691 fl oz |
| 10 ml | 0.3381 fl oz |
| 20 ml | 0.6763 fl oz |
| 25 ml | 0.8454 fl oz |
| 50 ml | 1.6907 fl oz |
| 100 ml | 3.3814 fl oz |
| 250 ml | 8.4535 fl oz |
| 500 ml | 16.907 fl oz |
| 1,000 ml | 33.814 fl oz |
Frequently asked questions
How many us fluid ounces are in a milliliter? +
There are 0.033814 us fluid ounces in one milliliter.
What is 10 ml in fl oz? +
10 ml equals 0.3381 fl oz. Multiply 10 by 0.03381402.
How do I convert us fluid ounce back to milliliter? +
Use milliliter = us fluid ounce ÷ 0.03381402. The converter above handles both directions, or see our dedicated fl oz to ml page.
How accurate is this milliliter to us fluid ounce conversion? +
The factor used is 0.0338140227, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate ml to fl oz in my head? +
Divide by 29.6. That is 0.08943% off the exact factor of 0.033814, which is fine for a rough figure and not for anything that has to balance.