Fluid Ounces to Millilitres converter
Recipes, drink sizes and bottle labels often switch between US fluid ounces and millilitres depending on where they were written. This free volume converter changes US fluid ounces (fl oz) into millilitres (mL) and back again — so you can follow an American recipe with a metric measuring jug, or read a metric label in familiar ounces.
How it works
The US fluid ounce is defined exactly as 29.5735295625 mL. To convert fluid ounces to millilitres the tool multiplies by that factor; to go the other way it divides by it. Type a value in either field and the opposite field updates instantly, in both directions. Note that this is the US fluid ounce — the UK imperial fluid ounce is a slightly smaller 28.4131 mL.
Example
To convert 8 fl oz (one US cup): 8 × 29.5735295625 = 236.59 mL. To convert 12 fl oz (a standard soda can): 12 × 29.5735295625 = 354.88 mL.
| US fluid ounces (fl oz) | Millilitres (mL) |
|---|---|
| 1 fl oz | 29.5735 mL |
| 8 fl oz | 236.59 mL |
| 12 fl oz | 354.88 mL |
| 16 fl oz | 473.18 mL |
All calculations run entirely in your browser — no data is sent to any server.