Convert US fluid ounces to milliliters
Enter a value in US fluid ounces to convert it to milliliters.
US fluid ounces to milliliters reference
| US fluid ounces | milliliters |
|---|---|
| 1 fl oz | 29.5735 ml |
| 2 fl oz | 59.147 ml |
| 5 fl oz | 147.8675 ml |
| 10 fl oz | 295.735 ml |
| 25 fl oz | 739.3375 ml |
| 50 fl oz | 1478.675 ml |
| 100 fl oz | 2957.35 ml |
The conversion factor
One US fluid ounce is 29.5735 milliliters. So to convert, multiply your figure in US fluid ounces by 29.5735. To go the other way, multiply milliliters by 0.03381406, or use the milliliters to US fluid ounces converter.
Doing it in your head
For a quick estimate, round the factor: roughly "times 30". Use the exact converter above when the number matters.
Where this conversion comes up
Cooking and baking (especially US vs metric recipes), fuel, and container sizes.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many milliliters are in a US fluid ounce?
1 US fluid ounce = 29.5735 milliliters.
What is the formula to convert US fluid ounces to milliliters?
Multiply the number of US fluid ounces by 29.5735. To go back the other way, multiply milliliters by 0.03381406.
What is 10 US fluid ounces in milliliters?
10 US fluid ounces = 295.735 milliliters. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.