Fluid Ounces to Milliliters Converter
Convert fluid ounces to milliliters instantly. Enter US fluid ounces to get mL, with the factor of 29.5735 and the reverse mL to fl oz direction shown.
Updated 2026-06-14 · Free · No sign-up · Runs privately in your browser
Show the formula & steps
How the Fluid Ounces to Milliliters Converter Works
This tool converts US fluid ounces (fl oz) to milliliters (mL) and back. Fluid ounces are common in US recipes and packaging, while milliliters are the metric volume unit used almost everywhere else. The two are linked by a fixed factor.
The Formula
Milliliters = fluid ounces × 29.5735 Fluid ounces = milliliters ÷ 29.5735
One US fluid ounce is defined as 29.5735 mL, so the conversion is exact.
Worked Example
Convert 8 fl oz (one cup) to milliliters:
- mL = 8 × 29.5735 = 236.6 mL
A standard soda can, 12 fl oz:
- mL = 12 × 29.5735 = 354.9 mL
Going the other way, 500 mL in fluid ounces:
- fl oz = 500 ÷ 29.5735 = 16.9 fl oz
Fluid Ounces to mL Quick Reference
| Fluid ounces | Milliliters |
|---|---|
| 1 | 29.6 |
| 8 | 236.6 |
| 12 | 354.9 |
| 16 | 473.2 |
| 32 | 946.4 |
US vs Imperial Fluid Ounces
There are two fluid ounce definitions. The US fluid ounce is 29.5735 mL and is used in this converter. The imperial (UK) fluid ounce is slightly smaller at 28.4131 mL. If you are working from a British recipe, multiply imperial fluid ounces by 28.4131 instead.
Frequently asked questions
How many milliliters are in a fluid ounce?+
One US fluid ounce equals about 29.5735 milliliters. So 8 fluid ounces is roughly 237 mL. To convert fluid ounces to mL, multiply by 29.5735.
How do I convert fluid ounces to milliliters?+
Multiply the fluid ounce value by 29.5735. For example, 8 fl oz × 29.5735 = 236.6 mL. To reverse it, divide mL by 29.5735 to get fluid ounces.
What is 8 fl oz in mL?+
8 US fluid ounces equals about 236.6 mL, which is one US cup. This is why a standard cup of liquid is often rounded to 240 mL.
Is a US fluid ounce the same as a UK fluid ounce?+
No. A US fluid ounce is 29.5735 mL, while a UK (imperial) fluid ounce is 28.4131 mL. This converter uses the US fluid ounce; subtract about 4 percent for the imperial version.
How many mL is a 12 oz can?+
A 12 US fluid ounce can holds about 355 mL (12 × 29.5735). This is the standard size for soda cans in North America.