fl oz to ml Converter
Convert US or UK (Imperial) fluid ounces to milliliters. We show both results at once so you don’t have to guess which “oz” your recipe or label meant.
For reverse conversion
Results
Selected fl oz → mL
29.5735
US fl oz equivalent
1.0000 US fl oz
UK fl oz equivalent
1.0408 UK fl oz
Converted 1 US fl oz → 29.5735 ml, and 30 ml → 1.0144 US fl oz.
Quick reference
| US fl oz | mL | UK fl oz |
|---|---|---|
| 1 | 29.5735 | 1.0408 |
| 2 | 59.1471 | 2.0817 |
| 4 (½ cup US) | 118.294 | 4.1635 |
| 8 (1 cup US) | 236.588 | 8.3269 |
| 16 (1 US pint) | 473.176 | 16.6539 |
Formulas used
US fluid ounce → mL
\( \text{mL} = \text{fl oz}_\text{US} \times 29.5735295625 \)
UK fluid ounce → mL
\( \text{mL} = \text{fl oz}_\text{UK} \times 28.4130625 \)
mL → US fl oz: \( \text{fl oz}_\text{US} = \text{mL} \div 29.5735295625 \)
mL → UK fl oz: \( \text{fl oz}_\text{UK} = \text{mL} \div 28.4130625 \)
Why two different fl oz?
The US and UK systems define the fluid ounce differently. If you follow a recipe, check if it is US-based (most modern web recipes) or UK/Commonwealth/older. This tool outputs both so you can compare.