One fl oz
Input: 1 fl oz
Output: 29.5735 mL
1 × 29.5735295625 = 29.5735 milliliters.
fluid ounces to mL converter
Use this to turn US fluid-ounce amounts from recipes or bottles into milliliters.
Milliliters:
Formula and algorithm
- milliliters = fluid ounces (US) × 29.5735295625
- Constant used: 1 US fluid ounce = 29.5735295625 milliliters (exact).
- For UK/imperial fluid ounces use 28.4130625 mL instead.
Worked examples
Cup (8 fl oz)
Input: 8 fl oz
Output: 236.5882 mL
8 × 29.5735295625 = 236.5882 milliliters (one US cup).
Pint (16 fl oz)
Input: 16 fl oz
Output: 473.1765 mL
16 × 29.5735295625 = 473.1765 milliliters (one US pint).
FAQ
What is 1 US fluid ounce in mL?
Exactly 29.5735295625 milliliters.
Is a US cup 8 fluid ounces?
Yes, a US customary cup is 8 US fluid ounces, about 236.59 mL.
Does this handle imperial fluid ounces?
No, it uses US fluid ounces. Imperial fl oz are 28.41 mL.
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Updated: June 7, 2026