mL to fluid ounces
1 milliliter equals 0.033814 US fluid ounces. Formula: fluid ounces = milliliters ÷ 29.5735.
= 3.3814 fl oz
Other direction: fluid ounces to mL
Formula
fluid ounces = milliliters ÷ 29.5735
Example: 100 mL = 3.3814 fl oz.
When you need mL to fluid ounces
The airport security limit is the famous one: the 100 mL carry-on rule equals 3.38 fl oz, which is why US toiletries are sold in 3.4 oz bottles. Drink sizes convert the same way — a 330 mL can is about 11.2 fl oz, and a 750 mL wine bottle is about 25.4 fl oz.
Recipes and medicine doses also switch between the two: a 15 mL tablespoon is about 0.51 fl oz, and 240 mL is about 8.1 fl oz — close to the US customary cup. This page uses US fluid ounces; the imperial fluid ounce is slightly smaller (28.41 mL).
Common mL to fl oz values
| Milliliters (mL) | US fluid ounces (fl oz) |
|---|---|
| 5 | 0.16907 |
| 15 | 0.50721 |
| 30 | 1.0144 |
| 50 | 1.6907 |
| 100 | 3.3814 |
| 240 | 8.1154 |
| 250 | 8.4535 |
| 330 | 11.1586 |
| 355 | 12.004 |
| 500 | 16.907 |
| 750 | 25.3605 |
| 1,000 | 33.814 |
FAQ
How many ounces is 100 mL?
100 mL is about 3.38 US fluid ounces. That is the carry-on liquid limit, which is why travel bottles are labeled 3.4 oz.
Is a US fluid ounce the same as an imperial fluid ounce?
No. A US fluid ounce is 29.574 mL, while an imperial fluid ounce is 28.413 mL — about 4% smaller. This page converts to US fluid ounces.