Volume conversion
Millilitres to US fluid ounces (mL to fl oz)
1 mL = 0.0338 fl oz — multiply the number of millilitres by 0.0338.
Millilitres to US fluid ounces conversion chart
| millilitres | US fluid ounces |
|---|---|
| 1 mL | 0.0338 fl oz |
| 2 mL | 0.0676 fl oz |
| 3 mL | 0.1014 fl oz |
| 4 mL | 0.1353 fl oz |
| 5 mL | 0.1691 fl oz |
| 10 mL | 0.3381 fl oz |
| 15 mL | 0.5072 fl oz |
| 20 mL | 0.6763 fl oz |
| 25 mL | 0.8454 fl oz |
| 30 mL | 1.0144 fl oz |
| 40 mL | 1.3526 fl oz |
| 50 mL | 1.6907 fl oz |
| 60 mL | 2.0288 fl oz |
| 75 mL | 2.536 fl oz |
| 100 mL | 3.3814 fl oz |
| 150 mL | 5.0721 fl oz |
| 200 mL | 6.7628 fl oz |
| 250 mL | 8.4535 fl oz |
| 500 mL | 16.907 fl oz |
| 750 mL | 25.3605 fl oz |
| 1000 mL | 33.814 fl oz |
How to convert by hand
1 mL = 0.0338140227 fl oz (US)
Because this is a linear conversion, the ratio never changes: every millilitre is always 0.0338 fl oz, whatever the size of the number.
Worked example: 30 mL × 0.0338 = 1.0144 fl oz .
Related conversions
About millilitres and US fluid ounces
Volume conversions trip people up because US and imperial measures share names but differ in size — a US gallon is roughly 20% smaller than an imperial one.
Millilitre
MetricOne thousandth of a litre, equal to one cubic centimetre.
Commonly used for: Medicine doses, recipes and cosmetics.
US fluid ounce
US customaryOne 128th of a US gallon, about 29.57 mL.
Commonly used for: Drink sizes and recipes in the United States.
Questions
How many US fluid ounces are in one millilitre?
One millilitre equals 0.0338 fl oz. To convert any amount, multiply the number of millilitres by 0.0338.
What is 5 mL in fl oz?
5 mL = 0.1691 fl oz. Type any value into the converter above to get an exact answer.
How do I convert US fluid ounces back to millilitres?
Divide by 0.0338 instead of multiplying — or use our US fluid ounces to Millilitres converter.
Is this converter accurate?
Yes. Linear conversions use the internationally agreed factors published by NIST (SP 811), and temperature conversions use the exact defining formulas. Calculations run at full double precision and are only rounded for display.
Need a different unit?
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