Convert fluid ounces to milliliters instantly. Enter a value below, or use the formula and reference table further down the page.
In practice
Fluid ounces to millilitres uses 29.5735 ml for a US fluid ounce or 28.4131 ml for a UK one, so the answer depends on where the measurement comes from. A US cup of 8 fl oz is 236.6 ml, which is why recipes round it to 240 ml. A 12 fl oz can is 355 ml, and a 16 fl oz pint glass is 473 ml. These are measures of volume, not weight — use a gram conversion for solids or dense ingredients like honey, where volume and weight differ a lot.
How to convert fluid ounces to milliliters
Multiply the value by 29.5735296.
mL = fl oz × 29.5735296Example: 10 fl oz = 295.7353 mL.
Fluid Ounces to Milliliters conversion table
| Fluid Ounces (fl oz) | Milliliters (mL) |
|---|---|
| 1 fl oz | 29.5735 mL |
| 2 fl oz | 59.1471 mL |
| 3 fl oz | 88.7206 mL |
| 4 fl oz | 118.2941 mL |
| 5 fl oz | 147.8676 mL |
| 10 fl oz | 295.7353 mL |
| 15 fl oz | 443.6029 mL |
| 20 fl oz | 591.4706 mL |
| 25 fl oz | 739.3382 mL |
| 50 fl oz | 1478.6765 mL |
| 100 fl oz | 2957.353 mL |
Frequently asked questions
How many milliliters is 1 fluid ounce?
1 fluid ounce equals 29.5735 milliliters.
What is the formula to convert fl oz to mL?
To convert fl oz to mL, multiply the value by 29.5735296. The full formula is: mL = fl oz × 29.5735296.
How do I convert milliliters back to fluid ounces?
Use the same calculator above and type your value into the milliliters field instead — it converts in both directions. Or use the reverse formula: fl oz = mL ÷ 29.5735296.
Is the fl oz to mL conversion exact?
The conversion factor used here (29.5735296) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.