Convert Milliliters to US fluid ounces
100 milliliters is 3.38 fl oz. One milliliter is exactly 0.0338140227018 US fluid ounces.
100 milliliters is 3.3814023 US fluid ounces, because one milliliter is 0.033814023 US fluid ounces. To convert milliliters to US fluid ounces, multiply by 0.033814023; to go the other way, divide by 0.033814023 or multiply by 29.57353. 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. One thousandth of a liter, and exactly one cubic centimeter.
Factor checked against the defining standard · How we check
- Milliliters × 0.033814023
100 * 0.0338143.381 fl oz
100 milliliters in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 20.28841362 tsp | × 0.202884136211 |
| US tablespoons | 6.76280454 tbsp | × 0.0676280454037 |
| US fluid ounces | 3.38140227 fl oz | × 0.0338140227018 |
| US cups | 0.4226752838 cup | × 0.00422675283773 |
| US pints | 0.2113376419 pt | × 0.00211337641887 |
| US quarts | 0.1056688209 qt | × 0.00105668820943 |
| US gallons | 0.02641720524 gal | × 0.000264172052358 |
| milliliters (as entered) | 100 ml | — |
| liters | 0.1 L | × 0.001 |
| imperial gallons | 0.02199692483 gal (UK) | × 0.000219969248299 |
| imperial quarts | 0.08798769932 qt (UK) | × 0.000879876993196 |
| imperial pints | 0.1759753986 pt (UK) | × 0.00175975398639 |
| imperial fluid ounces | 3.519507973 fl oz (UK) | × 0.0351950797279 |
| imperial gills | 0.7039015946 gi (UK) | × 0.00703901594557 |
| cubic millimetres | 100,000 mm³ | × 1,000 |
| cubic centimetres | 100 cm³ | × 1 |
| cubic inches | 6.102374409 in³ | × 0.0610237440947 |
| cubic feet | 0.003531466672 ft³ | × 0.0000353146667215 |
| cubic yards | 0.0001307950619 yd³ | × 0.00000130795061931 |
| cubic metres | 0.0001 m³ | × 0.000001 |
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: millilitres to US fluid ounces 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 milliliters to US fluid ounces? The converter and the working
- 1.Take the measurement in milliliters.
- 2.Multiply by 0.033814023 — that is how many US fluid ounces fit in one milliliter.
- 3.To go back the other way, divide by 0.033814023, or multiply by 29.57353.
Worked example: 25 milliliters to US fluid ounces
- Formula
- ml × 0.033814023 = fl oz
- Arithmetic
- 25 × 0.033814023 = 0.85 fl oz
- Answer
- 25 ml = 0.85 fl oz
The factor is rounded for display; the figure above is computed from the full value.
Milliliters to US fluid ounces conversion table
| Milliliters | US fluid ounces |
|---|---|
| 1 ml | 0.03 fl oz |
| 2 ml | 0.07 fl oz |
| 3 ml | 0.1 fl oz |
| 4 ml | 0.14 fl oz |
| 5 ml | 0.17 fl oz |
| 6 ml | 0.2 fl oz |
| 7 ml | 0.24 fl oz |
| 8 ml | 0.27 fl oz |
| 9 ml | 0.3 fl oz |
| 10 ml | 0.34 fl oz |
| 12 ml | 0.41 fl oz |
| 15 ml | 0.51 fl oz |
| 20 ml | 0.68 fl oz |
| 25 ml | 0.85 fl oz |
| 50 ml | 1.69 fl oz |
| 100 ml | 3.38 fl oz |
| 200 ml | 6.76 fl oz |
| 300 ml | 10.14 fl oz |
| 500 ml | 16.91 fl oz |
| 1000 ml | 33.81 fl oz |
| 2000 ml | 67.63 fl oz |
| 5000 ml | 169.07 fl oz |
| 10000 ml | 338.14 fl oz |
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 milliliter?
One thousandth of a liter, and exactly one cubic centimeter.
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.
How many US fluid ounces are in a milliliter?
One milliliter is 0.033814023 US fluid ounces. Going the other way, one US fluid ounce is 29.57353 milliliters. 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 milliliter.
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Questions people actually ask
- How many US fluid ounces are in a milliliter?
- 0.033814023. 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.
- How do I convert US fluid ounces back to milliliters?
- Divide by 0.033814023, or multiply by 29.57353 — 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
US fluid ounces to milliliters — the same conversion the other way.