To convert milliliters to US fluid ounces, divide by 29.5735 (or multiply by about 0.033814). 100 mL is 3.38 fl oz, 500 mL is 16.9 fl oz, and a 750 mL wine bottle is 25.36 fl oz.
Bottles and cosmetics sold internationally are sized in mL. Convert them here to compare with US sizes.
How to use the ml to ounces converter (ml to fl oz)
- Type the value in milliliters into the box. Decimals are fine.
- The result in fluid ounces updates as you type, along with the working.
- Need the other way? Switch the direction menu, or open the ounces to ml converter (fl oz to ml).
Formula
A US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 mL. The UK imperial fluid ounce is smaller, 28.4130625 mL. US nutrition labels round to 30 mL.
Worked example
How many fluid ounces in a 750 mL bottle of wine?
- 750 ÷ 29.5735295625 = 25.36.
- Result: 25.36 fl oz, about five 5-oz glasses.
Milliliters to fluid ounces chart
Common values, rounded to 3 decimal places.
| Milliliters (mL) | Fluid ounces (fl oz) |
|---|---|
| 5 mL | 0.169 fl oz |
| 10 mL | 0.338 fl oz |
| 15 mL | 0.507 fl oz |
| 30 mL | 1.014 fl oz |
| 50 mL | 1.691 fl oz |
| 60 mL | 2.029 fl oz |
| 100 mL | 3.381 fl oz |
| 120 mL | 4.058 fl oz |
| 150 mL | 5.072 fl oz |
| 200 mL | 6.763 fl oz |
| 250 mL | 8.454 fl oz |
| 330 mL | 11.159 fl oz |
| 355 mL | 12.004 fl oz |
| 375 mL | 12.68 fl oz |
| 500 mL | 16.907 fl oz |
| 591 mL | 19.984 fl oz |
| 750 mL | 25.361 fl oz |
| 1,000 mL | 33.814 fl oz |
| 1,500 mL | 50.721 fl oz |
| 2,000 mL | 67.628 fl oz |
Travel and packaging sizes
- Carry-on liquids: the TSA's 3-1-1 rule allows containers up to 3.4 oz (100 mL). 100 mL is 3.38 fl oz, and the rule rounds it to 3.4.
- Cans: 330 mL (11.2 fl oz) is standard in Europe; 355 mL (12 fl oz) in the US.
- Bottles: 500 mL = 16.9 fl oz, 1 L = 33.8 fl oz, 2 L = 67.6 fl oz.
- Medicine: dosing cups and syringes are in mL. A 5 mL dose is about 1/6 fl oz.
Quick mental math
Divide by 30 and add a little. 600 mL ÷ 30 = 20, plus 0.3 ≈ 20.3 fl oz (exact: 20.29).
Related conversions
Going the other way: ounces to ml converter (fl oz to ml). Related pages: cups to ml converter, ml to cups converter, tablespoons to teaspoons converter. For other units in the same family, use the full volume converter or the cooking measurement converter.
Caveats and assumptions
- These are US fluid ounces (volume). For weight ounces, use ounces to grams converter.
- Results show up to 10 significant digits; the chart is rounded for reading. Keep full precision for engineering, medical or legal work.
Frequently asked questions
How many ounces is 100 mL?
3.38 US fl oz (3.52 imperial fl oz).
How many ounces is 500 mL?
16.91 US fl oz.
How many ounces is 1 mL?
About 0.0338 US fl oz.
How many ounces is 1 liter?
33.81 US fl oz.
Sources
- NIST — SI Units: Volume — liter, US gallon and fluid ounce
- eCFR 21 CFR 101.9 — Nutrition labeling of food — label conventions: 1 cup = 240 mL, 1 fl oz = 30 mL, 1 tbsp = 15 mL, 1 tsp = 5 mL
- UK Weights and Measures Act 1985, Schedule 1 — defines the stone (14 lb), imperial gallon and imperial fluid ounce
This calculator gives estimates for planning and education. Check measurements, local codes, supplier specs and your school's official policy before relying on a result. See our disclaimer and how we build and check calculators.