How to convert mL to oz
To convert milliliters (mL) to fluid ounces (fl oz), divide the number of milliliters by the number of milliliters in one fluid ounce. The conversion depends on whether you are using US Customary or Imperial fluid ounces.
US fl oz = mL ÷ 29.5735
Imperial fl oz = mL ÷ 28.4131
Example: 500 mL to US fluid ounces
500 ÷ 29.5735 = 16.91 US fl oz
For example, 500 mL is approximately 16.91 US fluid ounces or 17.60 Imperial fluid ounces. Select the fluid-ounce standard in the calculator above to use the conversion you need.
mL to oz conversion chart
Use this chart for common milliliter to fluid-ounce conversions. Values are rounded to two decimal places.
| Milliliters (mL) | US fl oz | Imperial fl oz |
|---|---|---|
| 5 mL | 0.17 | 0.18 |
| 15 mL | 0.51 | 0.53 |
| 30 mL | 1.01 | 1.06 |
| 50 mL | 1.69 | 1.76 |
| 100 mL | 3.38 | 3.52 |
| 150 mL | 5.07 | 5.28 |
| 200 mL | 6.76 | 7.04 |
| 250 mL | 8.45 | 8.80 |
| 330 mL | 11.16 | 11.61 |
| 500 mL | 16.91 | 17.60 |
| 750 mL | 25.36 | 26.39 |
| 1,000 mL (1 L) | 33.81 | 35.20 |
Common mL to oz conversions
Some commonly searched conversions are:
- 100 mL = 3.38 US fl oz or 3.52 Imperial fl oz
- 250 mL = 8.45 US fl oz or 8.80 Imperial fl oz
- 330 mL = 11.16 US fl oz or 11.61 Imperial fl oz
- 500 mL = 16.91 US fl oz or 17.60 Imperial fl oz
- 750 mL = 25.36 US fl oz or 26.39 Imperial fl oz
- 1,000 mL = 33.81 US fl oz or 35.20 Imperial fl oz
Need the reverse conversion? Use our Oz to mL Converter. For other volume units, see our Volume Converter.
Frequently asked questions
How many ounces is 100 mL?
100 mL is approximately 3.38 US fluid ounces or 3.52 Imperial fluid ounces.
How many ounces is 250 mL?
250 mL is approximately 8.45 US fluid ounces or 8.80 Imperial fluid ounces.
How many ounces is 500 mL?
500 mL is approximately 16.91 US fluid ounces or 17.60 Imperial fluid ounces.
Why is a 500 mL bottle labeled as 16.9 fl oz?
In the US system, one fluid ounce is approximately 29.5735 mL. Dividing 500 mL by 29.5735 gives approximately 16.91 US fluid ounces, which is commonly rounded to 16.9 fl oz on packaging.
Is a fluid ounce the same as a weight ounce?
No. A fluid ounce (fl oz) measures volume, while an ounce (oz) used for weight measures mass. Milliliters measure volume, so they can be directly converted to fluid ounces without knowing the density of the liquid.