fl oz to mL Converter
Convert US fluid ounces to milliliters for cooking, beverages, and nutrition labels.
How It Works
Formula: fl oz to mL = value × 29.5735296
Example: 8 fl oz = 236.588237 mL
Note: 1 US fluid ounce equals 29.5735 milliliters, the standard for American beverage and recipe volumes.
Common Uses
Rounding Rule
Rounded to 4 decimal places
Error Margin
±0.01 mL
Precision Guidance
For cooking, round to whole mL. For nutrition labels, keep 1 decimal.
Common Mistakes
Fluid ounces measure volume, not weight. Do not confuse fl oz with the avoirdupois ounce (28.35 g).
Frequently Asked Questions
What is 1 fl oz in mL?
1 US fluid ounce equals 29.5735 milliliters (1 fl oz = 29.5735296 mL).
How do I convert fl oz to mL?
Multiply the fluid ounce value by 29.5735. For example, 8 fl oz × 29.5735 = 236.59 mL.
Is this the US or imperial fluid ounce?
This uses the US fluid ounce (29.57 mL). The imperial fluid ounce (28.41 mL) is slightly smaller.
How many mL in a cup?
1 US cup is 8 fl oz, which equals 236.59 mL using this conversion.
Deep Dive Guide
Fluid Ounces to mL: Convert US Liquid Volume to Metric
Convert fluid ounces to mL with the exact US formula (1 fl oz = 29.5735 mL). Covers drinks, recipes, and skincare for everyday American use.
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Last Updated 2026 | This converter was reviewed for accuracy