Oz to ML Converter
Type US fluid ounces to get milliliters. A 12 fl oz soda can holds about 355 mL.
12 fl oz =
354.882mL
12 US fluid ounces is 354.882 milliliters.
- 1 fl oz
- 29.5735 mL
- 1 mL
- 0.03381 fl oz
How to convert fluid ounces to mL
Multiply US fluid ounces by 29.5735 to get milliliters. That factor comes straight from the definitions: a US gallon is 231 cubic inches (3.785411784 L) and holds 128 fluid ounces, so one fluid ounce is 29.5735295625 mL.
A 16 oz cup of coffee is 16 × 29.5735 = 473.2 mL, which is also one US pint. A 20 fl oz soda bottle holds 591.5 mL, and a 64 fl oz jug of juice holds 1,892.7 mL, just under 1.9 liters.
Check whether the ounces are US or UK. Older British recipes use the imperial fluid ounce of 28.4131 mL, so 16 UK fl oz is 454.6 mL rather than 473.2. The difference grows with the amount: about 19 mL on a pint’s worth.
milliliters = US fluid ounces × 29.5735295625
- US labelling rules let a fluid ounce be declared as 30 mL; the exact US fluid ounce is 29.5735295625 mL. Source: 21 CFR 101.9(b)(5), FDA nutrition labelling.
- One US gallon is defined as 231 cubic inches, and a fluid ounce is 1/128 of it. Source: NIST, SI units: volume.
How to estimate oz to mL in your head
Multiply by 30 and take off a little. Thirty is the label-rounded fluid ounce, about 1.4% too big, so 16 oz × 30 = 480 mL becomes roughly 473 mL once you knock off 7. For small amounts, such as a 2 oz shot of espresso, × 30 = 60 mL is close enough for any kitchen.
Anchors that help: 8 fl oz is a US cup, about 237 mL; 33.8 fl oz is a liter; and every 10 oz is close to 300 mL (295.7 exactly).
Fluid ounces to mL chart
US fluid ounces from a half-ounce to a gallon, and what the same number of UK fluid ounces would be.
| Fluid ounces | mL (US fl oz) | mL (UK fl oz) |
|---|---|---|
| 0.5 | 14.7868 | 14.2065 |
| 1 | 29.5735 | 28.4131 |
| 1.5 | 44.3603 | 42.6196 |
| 2 | 59.1471 | 56.8261 |
| 3 | 88.7206 | 85.2392 |
| 4 | 118.294 | 113.652 |
| 5 | 147.868 | 142.065 |
| 6 | 177.441 | 170.478 |
| 8 | 236.588 | 227.3045 |
| 10 | 295.735 | 284.131 |
Show all 19 rowsShow fewer
| 12 | 354.882 | 340.957 |
| 16 | 473.176 | 454.609 |
| 20 | 591.471 | 568.261 |
| 24 | 709.765 | 681.9135 |
| 32 | 946.353 | 909.218 |
| 40 | 1,182.94 | 1,136.5225 |
| 48 | 1,419.53 | 1,363.827 |
| 64 | 1,892.71 | 1,818.436 |
| 128 | 3,785.41 | 3,636.872 |
Frequently Asked Questions
How many mL is 12 oz?
12 US fluid ounces is 354.9 mL, which rounds to the 355 mL printed on many soda and beer cans. In UK fluid ounces, 12 would be 341 mL.
How many mL are in 8 oz of baby formula?
Eight US fluid ounces is 236.6 mL, the same as one US cup. On a bottle marked in both units, the 8 oz line sits a little below 240 mL, because 240 mL uses the rounded 30 mL ounce.
Can I use this for ounces of weight?
Only for water-like liquids, and only roughly. Ounces of weight (oz, not fl oz) convert to grams, not milliliters: 8 oz of cheese is 226.8 g. The ounces to grams converter does that.