Fluid ounces to Milliliters Converter
1 fluid ounce (fl oz) equals 29.5735295625 milliliters (mL).
Quick answer
To convert US fluid ounces to milliliters, multiply by 29.5735. One fl oz is about 30 mL, and 8 fl oz (1 cup) is 236.6 mL.
- 1 fluid ounce = 29.57352956 milliliters
- 1 milliliter = 0.0338140227 fluid ounces
- Formula: mL = fl oz × 29.5735295625
- Quick estimate: multiply by 30 and take off 1.4%: 12 fl oz → 360 − 5 = 355 mL.
1 fluid ounce = 29.57352956 milliliters
How to convert fluid ounces to milliliters
mL = fl oz × 29.5735295625
To convert fluid ounces to milliliters, multiply the number of fluid ounces by 29.5735295625.
Example: 42 fl oz to mL
- Start with the value in fluid ounces: 42 fl oz.
- Multiply by 29.5735295625: 42 × 29.5735295625 = 1,242.088242.
- Result: 42 fluid ounces = 1,242.088242 milliliters.
Going the other way, 1 milliliter = 0.033814022702 fluid ounces, so to convert milliliters back to fluid ounces you divide by the same number. See milliliters to fluid ounces.
Where the conversion factor comes from
The US fluid ounce is 1/128 of a US gallon, and the US gallon is defined as exactly 231 cubic inches. Since an inch is exactly 2.54 cm, that makes 1 US fl oz = 29.5735295625 mL exactly. The UK (imperial) fluid ounce is slightly smaller, 28.4131 mL, but the imperial pint holds 20 of them instead of 16.
Mental math: fl oz to mL in your head
Multiply by 30, then subtract about 1.4%: 16 fl oz → 480 − 7 = 473 mL (exact 473.2).
When you need to convert fluid ounces to milliliters
- Converting US drink sizes (12 oz can, 16 oz pint glass, 20 oz bottle).
- Baby formula and breast milk amounts.
- Cocktail recipes: a US shot is 1.5 fl oz (44 mL).
- Medicine and supplement dosing.
Common mistakes
- Mixing US and UK fluid ounces: 20 UK fl oz is a UK pint (568 mL), while 16 US fl oz is a US pint (473 mL).
- Using the weight ounce (28.35 g) for liquids.
Everyday fluid ounces in milliliters
| Example | Fluid ounces | Milliliters |
|---|---|---|
| A shot (US) | 1.5 fl oz | 44.36 mL |
| Baby bottle feed | 4 fl oz | 118.29 mL |
| Cup | 8 fl oz | 236.59 mL |
| Can of soda | 12 fl oz | 354.88 mL |
| Pint glass (US) | 16 fl oz | 473.18 mL |
| Bottle of soda | 20 fl oz | 591.47 mL |
| Large coffee (venti hot) | 20 fl oz | 591.47 mL |
Fluid ounces to milliliters conversion table
| Fluid ounces (fl oz) | Milliliters (mL) |
|---|---|
| 0.1 fl oz | 2.957352956 mL |
| 0.2 fl oz | 5.914705912 mL |
| 0.3 fl oz | 8.872058869 mL |
| 0.4 fl oz | 11.82941182 mL |
| 0.5 fl oz | 14.78676478 mL |
| 0.6 fl oz | 17.74411774 mL |
| 0.7 fl oz | 20.70147069 mL |
| 0.8 fl oz | 23.65882365 mL |
| 0.9 fl oz | 26.61617661 mL |
| 1 fl oz | 29.57352956 mL |
| 1.5 fl oz | 44.36029434 mL |
| 2 fl oz | 59.14705912 mL |
| 2.5 fl oz | 73.93382391 mL |
| 3 fl oz | 88.72058869 mL |
| 3.5 fl oz | 103.5073535 mL |
| 4 fl oz | 118.2941182 mL |
| 4.5 fl oz | 133.080883 mL |
| 5 fl oz | 147.8676478 mL |
| 6 fl oz | 177.4411774 mL |
| 7 fl oz | 207.0147069 mL |
| 7.5 fl oz | 221.8014717 mL |
| 8 fl oz | 236.5882365 mL |
| 9 fl oz | 266.1617661 mL |
| 10 fl oz | 295.7352956 mL |
| 11 fl oz | 325.3088252 mL |
| 12 fl oz | 354.8823547 mL |
| 13 fl oz | 384.4558843 mL |
| 14 fl oz | 414.0294139 mL |
| 15 fl oz | 443.6029434 mL |
| 16 fl oz | 473.176473 mL |
| 17 fl oz | 502.7500026 mL |
| 18 fl oz | 532.3235321 mL |
| 19 fl oz | 561.8970617 mL |
| 20 fl oz | 591.4705912 mL |
| 21 fl oz | 621.0441208 mL |
| 22 fl oz | 650.6176504 mL |
| 23 fl oz | 680.1911799 mL |
| 24 fl oz | 709.7647095 mL |
| 25 fl oz | 739.3382391 mL |
| 26 fl oz | 768.9117686 mL |
More fl oz to mL values
- 27 fl oz
- 28 fl oz
- 29 fl oz
- 30 fl oz
- 31 fl oz
- 32 fl oz
- 33 fl oz
- 34 fl oz
- 35 fl oz
- 36 fl oz
- 37 fl oz
- 38 fl oz
- 39 fl oz
- 40 fl oz
- 41 fl oz
- 42 fl oz
- 43 fl oz
- 44 fl oz
- 45 fl oz
- 46 fl oz
- 47 fl oz
- 48 fl oz
- 49 fl oz
- 50 fl oz
- 51 fl oz
- 52 fl oz
- 53 fl oz
- 54 fl oz
- 55 fl oz
- 56 fl oz
- 57 fl oz
- 58 fl oz
- 59 fl oz
- 60 fl oz
- 61 fl oz
- 62 fl oz
- 63 fl oz
- 64 fl oz
- 65 fl oz
- 66 fl oz
- 67 fl oz
- 68 fl oz
- 69 fl oz
- 70 fl oz
- 71 fl oz
- 72 fl oz
- 73 fl oz
- 74 fl oz
- 75 fl oz
- 76 fl oz
- 77 fl oz
- 78 fl oz
- 79 fl oz
- 80 fl oz
- 81 fl oz
- 82 fl oz
- 83 fl oz
- 84 fl oz
- 85 fl oz
- 86 fl oz
- 87 fl oz
- 88 fl oz
- 89 fl oz
- 90 fl oz
- 91 fl oz
- 92 fl oz
- 93 fl oz
- 94 fl oz
- 95 fl oz
- 96 fl oz
- 97 fl oz
- 98 fl oz
- 99 fl oz
- 100 fl oz
- 110 fl oz
- 120 fl oz
- 130 fl oz
- 140 fl oz
- 150 fl oz
- 160 fl oz
- 170 fl oz
- 180 fl oz
- 190 fl oz
- 200 fl oz
- 210 fl oz
- 220 fl oz
- 230 fl oz
- 240 fl oz
- 250 fl oz
- 260 fl oz
- 270 fl oz
- 280 fl oz
- 290 fl oz
- 300 fl oz
- 310 fl oz
- 320 fl oz
- 330 fl oz
- 340 fl oz
- 350 fl oz
- 360 fl oz
- 370 fl oz
- 380 fl oz
- 390 fl oz
- 400 fl oz
- 410 fl oz
- 420 fl oz
- 430 fl oz
- 440 fl oz
- 450 fl oz
- 460 fl oz
- 470 fl oz
- 480 fl oz
- 490 fl oz
- 500 fl oz
- 600 fl oz
- 700 fl oz
- 800 fl oz
- 900 fl oz
- 1,000 fl oz
- 1,200 fl oz
- 1,500 fl oz
- 2,000 fl oz
- 2,500 fl oz
- 3,000 fl oz
- 4,000 fl oz
- 5,000 fl oz
- 10,000 fl oz
What is a fluid ounce?
The US fluid ounce is a unit of volume equal to 1/128 of a US gallon, about 29.57 mL.
What is a milliliter?
The milliliter (also spelled millilitre) is one thousandth of a liter and exactly equal to one cubic centimeter (cc).
Convert fluid ounces to other units
Convert other units to milliliters
Frequently asked questions
How many milliliters are in a fluid ounce?
One fluid ounce is 29.57352956 milliliters.
How many fluid ounces are in a milliliter?
One milliliter is 0.0338140227 fluid ounces.
What is the formula to convert fluid ounces to milliliters?
mL = fl oz × 29.5735295625.
How many mL is 8 oz?
8 US fluid ounces is 236.6 mL, one US cup.
How many mL in a 12 oz can?
12 US fl oz is 354.9 mL, labeled 355 mL.