Fluid Ounces to Milliliters Converter
There are exactly 29.5735 milliliters in one fluid ounce. To convert fluid ounces to milliliters, multiply by 29.5735.
How to Convert Fluid Ounces to Milliliters
To convert fluid ounces to milliliters, multiply by 29.5735.
For example: 5 fluid ounces × 29.5735 = 147.868 milliliters.
Where This Comes Up
Drink sizes, bottle labels, cocktail recipes and liquid medicine doses in the United States are all in fluid ounces. Metric labels, dosing syringes and bar jiggers outside the US are in milliliters.
A 12-ounce can of soda holds 354.882 milliliters, which is why the metric label reads 355 mL.
What People Get Wrong
The UK imperial fluid ounce is 28.4130625 mL, about 4 percent smaller than the US one. A British recipe calling for 10 fl oz means 284 mL, not the 296 mL a US reading would give.
Fluid Ounces to Milliliters Conversion Table
| Fluid ounces (fl oz) | Milliliters (mL) |
|---|---|
| 1 | 29.5735 |
| 2 | 59.1471 |
| 3 | 88.7206 |
| 4 | 118.294 |
| 5 | 147.868 |
| 6 | 177.441 |
| 7 | 207.015 |
| 8 | 236.588 |
| 9 | 266.162 |
| 10 | 295.735 |
| 11 | 325.309 |
| 12 | 354.882 |
| 13 | 384.456 |
| 14 | 414.029 |
| 15 | 443.603 |
| 16 | 473.176473 |
| 17 | 502.75 |
| 18 | 532.324 |
| 19 | 561.897 |
| 20 | 591.471 |
| 25 | 739.338 |
| 30 | 887.206 |
| 40 | 1,182.94 |
| 50 | 1,478.68 |
| 75 | 2,218.01 |
| 100 | 2,957.35 |
| 250 | 7,393.38 |
| 500 | 14,786.8 |
| 1,000 | 29,573.5 |
About These Units
The fluid ounce
A US fluid ounce is exactly 29.5735295625 milliliters and measures volume, not weight. The UK imperial fluid ounce is slightly smaller at 28.41 milliliters.
The milliliter
A milliliter is one thousandth of a liter and is exactly the same volume as one cubic centimeter. It is the standard unit in metric recipes and on medicine labels.
Definitions follow NIST Handbook 44, Appendix C. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
How many mL is 1 fl oz?
One US fluid ounce is exactly 29.5735295625 milliliters, normally rounded to 29.57 mL or just 30 mL.
Is a fluid ounce the same as an ounce?
No. A fluid ounce measures volume and an ounce measures weight. They only coincide for water, and even then only approximately.
How many mL is a 16 oz water bottle?
16 US fluid ounces is 473.176 milliliters, which is why those bottles are labeled 500 mL only when they are slightly larger.
Is 30 mL close enough for medicine?
For a single teaspoon-sized dose the 1.4 percent error is usually irrelevant, but follow the dosing device supplied with the medicine rather than converting by hand.