Convert Milliliters to Fluid Ounces
Convert milliliters into US fluid ounces for travel-size toiletries, drink recipes and metric cosmetic labels.
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1 ml = 0.033814 fl oz
One milliliter equals 0.033814 US fluid ounces. To convert milliliters to US fluid ounces, divide by 29.5735 — so 500 ml = 16.907 fl oz and 100 ml = 3.381 fl oz. This is the fluid ounce (volume) used on US drink cans, cocktail recipes and skincare labels. UK (imperial) fluid ounces are slightly smaller at 28.4131 ml, and the fluid ounce is not the same as the weight ounce (28.3495 g).
Quick reference: milliliters to fluid ounces (us)
| Milliliters | Fluid ounces (US) |
|---|---|
| 5 | 0.169 US fl oz |
| 10 | 0.338 US fl oz |
| 15 | 0.507 US fl oz (1 tbsp) |
| 30 | 1.014 US fl oz |
| 50 | 1.691 US fl oz |
| 100 | 3.381 US fl oz |
| 150 | 5.072 US fl oz |
| 200 | 6.763 US fl oz |
| 250 | 8.454 US fl oz |
| 330 | 11.159 US fl oz |
| 355 | 12.001 US fl oz (US can) |
| 500 | 16.907 US fl oz |
| 750 | 25.361 US fl oz (wine bottle) |
| 1000 | 33.814 US fl oz |
Formula and worked examples: milliliters to fluid ounces (us)
Formula: US fl oz = milliliters ÷ 29.5735 • A 500 ml water bottle → 500 ÷ 29.5735 = 16.91 fl oz, why US 'pint' bottles are labelled 16.9 fl oz. • A 30 ml espresso shot → 30 ÷ 29.5735 = 1.014 fl oz, the reference double-shot volume. • A 355 ml US soda can → 12.00 fl oz, the standard US canned-drink size.
When and why people use milliliters to fluid ounces (us)
US cocktail recipes still list spirits in fluid ounces (1.5 fl oz = 44 ml jigger), while European bar tools are marked in milliliters. Converting between the two keeps drink strength consistent. Skincare and pharmacy are the other common cases. A 100 ml travel bottle is 3.38 fl oz, comfortably under the US TSA 3.4 fl oz carry-on limit — but a 100 ml UK travel bottle is 3.52 UK fl oz, still under the 100 ml EU limit but formatted differently on labels. Nutrition Facts panels in the US show serving sizes in fl oz alongside metric equivalents. Standards note: the US fluid ounce is defined as exactly 1/128 of a US gallon (231 in³), giving 29.5735295625 ml. The UK fluid ounce is defined by the 1985 Weights and Measures Act as 1/160 of the imperial gallon (4.54609 L), or exactly 28.4130625 ml.
Common mistakes to watch for when converting milliliters to fluid ounces (us)
The big three: mixing fl oz with weight oz, mixing US fl oz with UK fl oz, and mixing US 'cups' with fluid ounces. A US cup is 8 fl oz = 236.59 ml; a UK 'cup' can mean 250 ml or 284 ml depending on the source. TSA and airport security limits are set in milliliters (100 ml worldwide, 3.4 fl oz in the US). A 3.5 fl oz bottle is over the limit at 103.5 ml, even though it looks smaller than 100 ml on the label. And Amazon listings often mix UK and US fl oz for the same product — always confirm the ml figure.
Milliliters to Fluid ounces (US) FAQ
- How many fl oz is 500 ml?
- 500 ml equals 16.907 US fluid ounces, or 17.598 UK fluid ounces. The 500 ml bottle you buy in Europe is labelled '16.9 fl oz' in the US.
- Is 100 ml the same as 3.4 fl oz?
- Almost. 100 ml is 3.3814 US fl oz — that's why the US TSA rounds its liquid limit up to 3.4 fl oz. A '3.5 fl oz' bottle is actually 103.5 ml and will be confiscated.
- Is a fluid ounce the same as an ounce?
- No. A fluid ounce measures volume (about 29.57 ml in the US) and a regular ounce measures weight (28.35 g). They only match numerically for pure water at 4 °C, by coincidence.
- Are US and UK fluid ounces the same?
- No. A US fl oz is 29.5735 ml and a UK fl oz is 28.4131 ml — the UK version is about 4 percent smaller, opposite to the pattern for gallons where UK is bigger.
- How many ml in a shot of alcohol?
- A US 'shot' is typically 1.5 fl oz = 44.36 ml, and a metric shot is either 30 ml (single) or 45 ml (double). Bars vary, but 30 ml and 44 ml are the two most common.
- How much is 250 ml in cups?
- 250 ml is 8.454 US fl oz, or 1.057 US cups. Many international recipes treat 250 ml as '1 cup' even though a US cup is technically 236.588 ml.
- How many fl oz is a wine bottle?
- A standard 750 ml wine bottle is 25.36 US fl oz, roughly five 5 fl oz glasses.
- Why do US drink cans say 12 fl oz?
- 12 US fl oz equals 354.88 ml, so the metric equivalent is usually printed as 355 ml. Both figures describe the same can.
- How do I estimate ml to fl oz mentally?
- Divide the ml figure by 30. 200 ml ÷ 30 ≈ 6.7 fl oz (actual 6.76). The 30 shortcut is off by about 1.4 percent.
Last updated:
Sources: NIST Handbook 44 (US fl oz = 29.5735295625 ml exactly), UK Weights and Measures Act 1985 (imperial fl oz = 28.4130625 ml exactly), BIPM SI brochure.