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Ounces to ML Converter
Convert US fluid ounces to milliliters instantly, with the formula and a quick reference table.
ML to Ounces Converter
Convert milliliters to US fluid ounces as you type. Type in either box, or switch to any other volume unit.
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About milliliters and US fluid ounces
Volume units are everywhere in cooking, drinks, fuel and medicine. US recipes use cups, tablespoons and fluid ounces; most of the world uses millilitres and litres.
This converter changes milliliters (mL) into US fluid ounces (fl oz) instantly. You can also type in the second box to convert backwards, or pick any other volume unit from the menus.
Formula
fl oz = mL ÷ 29.57352956
1 mL = 0.033814023 fl oz
1 fl oz = 29.57352956 mL
Both units are defined in litres: 1 milliliter = 0.001 litre, and 1 US fluid ounces = 0.029573529562 litre. Dividing one by the other gives the factor above.
Worked example
To convert 12 mL: 12 × 0.033814023 = 0.405768 fl oz.
Notes and assumptions
Uses US customary units. A metric cup is 250 mL and a UK (imperial) gallon is 4.54609 L, so results differ if your recipe or spec uses those.
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Milliliters to US fluid ounces conversion table
| mL | fl oz |
|---|---|
| 1 mL | 0.033814 fl oz |
| 2 mL | 0.067628 fl oz |
| 3 mL | 0.101442 fl oz |
| 4 mL | 0.135256 fl oz |
| 5 mL | 0.16907 fl oz |
| 6 mL | 0.202884 fl oz |
| 7 mL | 0.236698 fl oz |
| 8 mL | 0.270512 fl oz |
| 9 mL | 0.304326 fl oz |
| 10 mL | 0.33814 fl oz |
| 12 mL | 0.405768 fl oz |
| 15 mL | 0.50721 fl oz |
| 20 mL | 0.67628 fl oz |
| mL | fl oz |
|---|---|
| 25 mL | 0.845351 fl oz |
| 30 mL | 1.014421 fl oz |
| 40 mL | 1.352561 fl oz |
| 50 mL | 1.690701 fl oz |
| 60 mL | 2.028841 fl oz |
| 70 mL | 2.366982 fl oz |
| 75 mL | 2.536052 fl oz |
| 80 mL | 2.705122 fl oz |
| 90 mL | 3.043262 fl oz |
| 100 mL | 3.381402 fl oz |
| 250 mL | 8.453506 fl oz |
| 500 mL | 16.90701 fl oz |
| 1,000 mL | 33.81402 fl oz |
How to convert by hand
- Take the value in milliliters.
- Multiply it by 0.033814023.
- Round only at the end.
Common mistakes
- Mixing US and UK units. A UK pint (568 mL) is about 20% bigger than a US pint (473 mL).
- Treating fluid ounces (volume) and ounces (weight) as the same thing. They only match for water-like liquids.
- Using a metric cup (250 mL) recipe with a US cup (236.6 mL) measure. The gap is small but adds up in baking.
Sources
- Unit definitions and exact conversion factors: NIST Special Publication 811, Guide for the Use of the International System of Units (SI).
Frequently asked questions
How many US fluid ounces are in one milliliter?
1 mL = 0.033814 fl oz.
How do I convert milliliters to US fluid ounces?
Multiply by 0.033814023 (or divide by 29.57352956). Example: 10 mL = 0.33814 fl oz.
How do I convert US fluid ounces back to milliliters?
Divide by 0.033814023. Or use the Ounces to ML Converter.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
See our methodology and editorial policy. Think something’s off? Report an error with this tool.
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