To convert ml to US fluid oz, multiply the milliliter value by 0.033814. This conversion uses the exact NIST-certified factor where 1 US fluid ounce = 29.5735295625 mL. The US fluid ounce is the standard unit used in American recipes, FDA food labels, and nutrition facts across the United States.
View ml to US fl oz FormulaA milliliter is one-thousandth of a liter (0.001 L) in the Metric System. It is the global standard for measuring liquid volume in science, medicine, and commerce. When converting to US fluid ounces, 1 mL = 0.033814 US fl oz.
A US fluid ounce is a unit of volume in the US Customary System equal to 29.5735 mL. It is used for cooking measurements, beverage servings, and food labeling in the United States. FDA nutrition labels list serving sizes in US fl oz.
Drag the slider to see how milliliters translate to US fluid ounces. 1 US fl oz = 29.57 mL.
To convert milliliters to US fluid ounces, multiply the mL value by 0.033814.
These 8 examples show common ml to US fl oz conversions. Click any card to load it in the calculator.
Click any row to load the value in the converter above.
| Milliliters (mL) | US Fluid Ounces | Common Use |
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3.3814 US fl oz are in 100 mL. Multiply 100 by 0.033814 to get the result. This is commonly approximated as "3.4 oz" on airport liquid restrictions.
No. 30 mL = 1.0144 US fl oz. One US fluid ounce is exactly 29.5735 mL. The 30 mL approximation is close enough for cooking but not for medicine or science where precision matters.
236.588 mL equals 1 US cup (8 US fluid ounces). This is different from a metric cup (250 mL) and an Imperial cup (284.131 mL). Always use the correct cup size for your recipe system.
Use US fl oz when following American recipes, FDA food labels, or US nutrition facts. US fl oz (29.5735 mL) is 4.08% larger than Imperial fl oz (28.4131 mL). If the recipe is from the US, always use US fl oz for accurate results.
The exact NIST conversion factor is 1 mL = 0.033814022701843 US fl oz, or equivalently 1 US fl oz = 29.5735295625 mL. Our calculator uses these exact values for maximum precision.