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Ounces to Milliliters Calculator

Convert US fluid ounces to milliliters using the exact 1 US fl oz = 29.5735295625 mL relationship. Mass ounces are outside this conversion.

Content updated October 7, 2026 · Details

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Milliliters

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Converted volume
29.5735295625 mL
1 US fluid ounce = 29.5735295625 milliliters
fl oz

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Worked example

ounces: 1

Result: 29.5735295625 mL

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Common US fluid ounce amounts in mL

US fluid ouncesMilliliters (rounded to 3 decimals)
1 fl oz29.574 mL
2 fl oz59.147 mL
8 fl oz236.588 mL
16 fl oz473.176 mL
32 fl oz946.353 mL

These are liquid-volume conversions, not ounces of ingredient weight. Keep extra precision until the final recipe measurement. For the other direction, use the mL to US fluid ounces converter; for smaller spoon measures, use the mL and US teaspoons converter.

This calculator converts US fluid ounces of volume to milliliters using 1 US fluid ounce = 29.5735295625 mL. A mass ounce is a different unit and is outside this calculator’s scope.

Formula

mL=US fl oz×29.5735295625\text{mL}=\text{US fl oz}\times29.5735295625

The default 1 US fl oz produces 29.5735295625 mL. The result permits up to 12 decimal places and uses the symbol mL.

Related: the ml to oz converter for the reverse direction, plus the oz to cc converter and milliliters to cups calculator.

Keep the source ounce convention

Use the US fluid-ounce convention expected here and retain the original bottle label beside mL. Weight ounces and Imperial fluid ounces require their own interpretation before comparison with this result.

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Frequently asked questions

How many mL are in one US fluid ounce?

One US fluid ounce is 29.5735295625 mL in this calculator.

Sources

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