US fluid ounces to Millilitres (fl oz to ml)
1 fl oz = 29.57353 ml. Multiply US fluid ounces by 29.57353; the box below does it both ways.
3 fl oz = 88.7206 ml · millilitres to US fluid ounces page
How to convert US fluid ounces to millilitres
- Take the value in US fluid ounces.
- Multiply by 29.57353 (because 1 fl oz = 29.57353 ml).
- Example: 3 fl oz × 29.57353 = 88.7206 ml.
- Going back: divide by 29.57353, or multiply by 0.03381402.
Where this comes up
Multiply US fluid ounces by 29.5735. 8 oz is 237 ml, the US "cup"; a 16 oz bottle is 473 ml; a 12 oz can is 355 ml. Baby-formula and protein instructions written for the US market are the usual reason.
| fl oz | ml |
|---|---|
| 0.5 | 14.7868 |
| 1 | 29.5735 |
| 2 | 59.1471 |
| 3 | 88.7206 |
| 4 | 118.2941 |
| 5 | 147.8676 |
| 6 | 177.4412 |
| 8 | 236.5882 |
| 10 | 295.7353 |
| 12 | 354.8824 |
| 16 | 473.1765 |
| 20 | 591.4706 |
| 32 | 946.3529 |
| 64 | 1,892.71 |
Questions people ask
How many millilitres are in 1 US fluid ounce?
1 fl oz = 29.57353 ml. To convert, multiply the US fluid ounce value by 29.57353.
What is 8 fl oz in ml?
8 fl oz is 236.5882 ml.
How do I convert millilitres back to US fluid ounces?
Divide by 29.57353, or multiply by 0.03381402: 1 ml = 0.03381402 fl oz.
US or UK fluid ounces?
US. A US fluid ounce is 29.57 ml; the UK (imperial) fluid ounce is 28.41 ml, about 4% smaller. Recipes and bottle labels from the US use the US ounce.
More volume conversions
Millilitres to US fluid ounces (ml to fl oz) · L to gal · gal to L · tsp to ml · ml to tsp · tbsp to ml · all converters
Factors are the exact international definitions; last checked 2026-10-10.