Convert US fluid ounces to Milliliters
12 US fluid ounces is 354.88 ml. One US fluid ounce is exactly 29.5735295625 milliliters.
12 US fluid ounces is 354.88235 milliliters, because one US fluid ounce is 29.57353 milliliters. To convert US fluid ounces to milliliters, multiply by 29.57353; to go the other way, divide by 29.57353 or multiply by 0.033814023. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130. Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly.
Factor checked against the defining standard · How we check
- US fluid ounces × 29.57353
12 * 29.57353354.882 ml
12 US fluid ounces in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 72 tsp | × 6 |
| US tablespoons | 24 tbsp | × 2 |
| US fluid ounces (as entered) | 12 fl oz | — |
| US cups | 1.5 cup | × 0.125 |
| US pints | 0.75 pt | × 0.0625 |
| US quarts | 0.375 qt | × 0.03125 |
| US gallons | 0.09375 gal | × 0.0078125 |
| milliliters | 354.8823548 ml | × 29.5735295625 |
| liters | 0.3548823548 L | × 0.0295735295625 |
| imperial gallons | 0.07806320481 gal (UK) | × 0.00650526706741 |
| imperial quarts | 0.3122528192 qt (UK) | × 0.0260210682697 |
| imperial pints | 0.6245056385 pt (UK) | × 0.0520421365393 |
| imperial fluid ounces | 12.49011277 fl oz (UK) | × 1.04084273079 |
| imperial gills | 2.498022554 gi (UK) | × 0.208168546157 |
| cubic millimetres | 354,882.3548 mm³ | × 29,573.5295625 |
| cubic centimetres | 354.8823548 cm³ | × 29.5735295625 |
| cubic inches | 21.65625 in³ | × 1.8046875 |
| cubic feet | 0.01253255208 ft³ | × 0.00104437934028 |
| cubic yards | 0.0004641685957 yd³ | × 0.0000386807163066 |
| cubic metres | 0.0003548823548 m³ | × 0.0000295735295625 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: US fluid ounces to millilitres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert US fluid ounces to milliliters? The converter and the working
- 1.Take the measurement in US fluid ounces.
- 2.Multiply by 29.57353 — that is how many milliliters fit in one US fluid ounce.
- 3.To go back the other way, divide by 29.57353, or multiply by 0.033814023.
Worked example: 25 US fluid ounces to milliliters
- Formula
- fl oz × 29.57353 = ml
- Arithmetic
- 25 × 29.57353 = 739.34 ml
- Answer
- 25 fl oz = 739.34 ml
The factor is rounded for display; the figure above is computed from the full value.
US fluid ounces to milliliters conversion table
| US fluid ounces | Milliliters |
|---|---|
| 1 fl oz | 29.57 ml |
| 2 fl oz | 59.15 ml |
| 3 fl oz | 88.72 ml |
| 4 fl oz | 118.29 ml |
| 5 fl oz | 147.87 ml |
| 6 fl oz | 177.44 ml |
| 7 fl oz | 207.01 ml |
| 8 fl oz | 236.59 ml |
| 9 fl oz | 266.16 ml |
| 10 fl oz | 295.74 ml |
| 12 fl oz | 354.88 ml |
| 15 fl oz | 443.6 ml |
| 20 fl oz | 591.47 ml |
| 25 fl oz | 739.34 ml |
| 50 fl oz | 1,478.68 ml |
| 100 fl oz | 2,957.35 ml |
| 200 fl oz | 5,914.71 ml |
| 300 fl oz | 8,872.06 ml |
| 500 fl oz | 14,786.76 ml |
| 1000 fl oz | 29,573.53 ml |
| 2000 fl oz | 59,147.06 ml |
| 5000 fl oz | 147,867.65 ml |
| 10000 fl oz | 295,735.3 ml |
US and imperial fluid ounces differ by four per cent
29.5735295625 ml in the US, 28.4130625 ml imperial, both exact by definition. On a single measure the difference is a few drops; across a liter of medicine dosed in fluid ounces it is most of a dose.
NIST Handbook 44, Appendix C — general tables of units of measurement
What is a US fluid ounce?
Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly. The imperial fluid ounce is a different unit at exactly 28.4130625 ml, so a UK recipe calling for 10 fl oz means 284 ml and a US one means 296 ml. It is also a volume, not a weight: an ounce of flour is not a fluid ounce of flour.
What is a milliliter?
One thousandth of a liter, and exactly one cubic centimeter.
How many milliliters are in a US fluid ounce?
One US fluid ounce is 29.57353 milliliters. Going the other way, one milliliter is 0.033814023 US fluid ounces. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a US fluid ounce.
Cite this page
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- Chicago
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Questions people actually ask
- How many milliliters are in a US fluid ounce?
- 29.57353. One thousandth of a liter, and exactly one cubic centimeter.
- How do I convert milliliters back to US fluid ounces?
- Divide by 29.57353, or multiply by 0.033814023 — they are the same operation.
The values people look up
Each one is this page with the value filled in, and each answers in its own title.
Other volume conversions
Milliliters to US fluid ounces — the same conversion the other way.