How many US fluid ounces are in a milliliter?

1 mL = 0.033814 fl oz. To convert any amount, multiply by 0.033814.

How do you convert milliliters to US fluid ounces?

Multiply the number of milliliters by 0.033814 to get US fluid ounces. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Volume

Milliliters to US fluid ounces converter

Convert milliliters (mL) to US fluid ounces (fl oz). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert milliliters to US fluid ounces— the formula

Milliliters convert to US fluid ounces by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

fl oz = mL × 0.033814

mL = fl oz × 29.5735

Metric volumes per BIPM SI definitions. US customary volumes per NIST Handbook 44: 1 US gal = 3.785411784 L exactly; 1 fl oz = 1/128 US gal.

Questions

Frequently asked questions

How many US fluid ounces are in a milliliter?
1 mL = 0.033814 fl oz. To convert any amount, multiply by 0.033814.
How do you convert milliliters to US fluid ounces?
Multiply the number of milliliters by 0.033814 to get US fluid ounces. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.