How to convert millilitres to US fluid ounces
One millilitre equals 0.033814 US fluid ounces, so multiply the number of millilitres by 0.033814:
US fl oz = ml × 0.033814
ml = US fl oz ÷ 0.033814 (1 US fl oz = 29.5735 ml)
Example: 30 ml → 30 × 0.033814 = 1.0144 US fl oz.
Going the other way, divide by 0.033814, or multiply by 29.5735; the US fluid ounces to millilitres converter does it for you.
Everyday values
| Millilitres | US fluid ounces | For example |
|---|---|---|
| 30 ml | 1.0144 US fl oz | a shot-sized cup |
| 100 ml | 3.3814 US fl oz | the liquid limit per container in many airports |
| 250 ml | 8.4535 US fl oz | a glass |
| 330 ml | 11.1586 US fl oz | a can of soft drink (Europe) |
| 355 ml | 12.004 US fl oz | a US soda can (12 fl oz) |
| 500 ml | 16.907 US fl oz | a bottle of water |
When you need this conversion
Drink sizes and travel rules are the usual reasons. Airport security in many countries limits liquids in hand luggage to containers of 100 ml (3.4 US fl oz). A US soda can is 12 fl oz (355 ml), while European cans are often 330 ml (11.2 fl oz).
Millilitre to US fluid ounce conversion table
| ml | US fl oz | ml | US fl oz |
|---|---|---|---|
| 50 ml | 1.6907 US fl oz | 550 ml | 18.5977 US fl oz |
| 100 ml | 3.3814 US fl oz | 600 ml | 20.2884 US fl oz |
| 150 ml | 5.0721 US fl oz | 650 ml | 21.9791 US fl oz |
| 200 ml | 6.7628 US fl oz | 700 ml | 23.6698 US fl oz |
| 250 ml | 8.4535 US fl oz | 750 ml | 25.3605 US fl oz |
| 300 ml | 10.1442 US fl oz | 800 ml | 27.0512 US fl oz |
| 350 ml | 11.8349 US fl oz | 850 ml | 28.7419 US fl oz |
| 400 ml | 13.5256 US fl oz | 900 ml | 30.4326 US fl oz |
| 450 ml | 15.2163 US fl oz | 950 ml | 32.1233 US fl oz |
| 500 ml | 16.907 US fl oz | 1,000 ml | 33.814 US fl oz |
About the units
- Millilitre (ml): one thousandth of a litre, the same as one cubic centimetre.
- US fluid ounce (US fl oz): 1/128 of a US gallon, about 29.57 millilitres.
Both are units of volume. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many US fluid ounces are in one millilitre?
One millilitre is 0.033814 US fluid ounces. One US fluid ounce is 29.5735 millilitres.
How do I convert millilitres to US fluid ounces?
Multiply the value in millilitres by 0.033814. To go back, divide by 0.033814.
What is 30 ml in US fluid ounces?
30 ml = 1.0144 US fl oz.
What is 100 ml in US fluid ounces?
100 ml = 3.3814 US fl oz.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.