A US fluid ounce is 29.5735295625 ml; an Imperial fluid ounce is 28.4130625 ml. The Imperial one is smaller — the opposite of the gallon relationship, which catches people out.
| ml | fl oz (US) | fl oz (US) | ml |
|---|---|---|---|
| 15 | 0.5072 | 1 | 29.5735 |
| 30 | 1.0144 | 2 | 59.1471 |
| 100 | 3.3814 | 4 | 118.294 |
| 150 | 5.0721 | 8 | 236.588 |
| 250 | 8.4535 | 12 | 354.882 |
| 330 | 11.1586 | 16 | 473.176 |
| 500 | 16.907 | 20 | 591.471 |
| 1000 | 33.814 | 33.814 | 999.999 |