Convert ml to oz with our free ml to oz converter — or flip it and turn fluid ounces back into milliliters. One US fluid ounce is 29.5735 milliliters, so the conversion is a single multiplication either way, and this page works it out instantly in both directions.
The table below uses US fluid ounces. Change the ounce type above to see the Imperial figures.
| Milliliters (ml) | Fluid ounces (fl oz) |
|---|
| Fluid ounces (fl oz) | Milliliters (ml) |
|---|
Milliliters and fluid ounces both measure volume, but they come from different systems. A milliliter is metric — one thousandth of a liter — while a fluid ounce belongs to the US customary system (and, with a slightly different size, the UK imperial system). That is why there is no single "ounce": a US fluid ounce and a UK fluid ounce are different volumes, and this converter lets you pick which one you mean.
ml to fl oz (US): fl oz = ml × 0.033814 | fl oz to ml (US): ml = fl oz × 29.5735
ml to fl oz (UK): fl oz = ml × 0.035195 | fl oz to ml (UK): ml = fl oz × 28.4131
One US fluid ounce is exactly 29.5735295625 milliliters, so to convert milliliters to US fluid ounces you multiply by 0.033814 (or divide by 29.5735). To go the other way, multiply the fluid ounces by 29.5735. A UK (Imperial) fluid ounce is a little smaller — 28.4130625 milliliters — so the same number of milliliters gives slightly more Imperial fluid ounces: 500 ml is 16.907 US fl oz but 17.598 UK fl oz. The difference is about 4%, which matters in baking and medicine, so check which ounce your recipe or label means.
This conversion comes up most often in cooking and drinks. Recipes move between metric and US measures all the time: a 500 ml bottle of water is about 17 fl oz, a standard US cup is 8 fl oz (236.588 ml), and a 330 ml can is about 11.16 fl oz. It also matters for skincare and supplements, where a product may be labelled in milliliters in one country and fluid ounces in another.
A recipe calls for 500 ml of milk, but the measuring jug is marked in US fluid ounces.
Step 1: The conversion factor — 1 US fl oz = 29.5735 ml.
Step 2: Divide the milliliters by the factor — 500 ÷ 29.5735 = 16.907.
Step 3: Read the result — 500 ml = 16.907 US fl oz.
Enter the same numbers in the converter and it gives exactly the same result: 16.907 fl oz. Going the other way, one US cup is 8 fl oz, and 8 × 29.5735 = 236.588 ml. A full liter (1,000 ml) is 33.814 US fl oz.
500 ml is 16.907 US fluid ounces. In UK (Imperial) fluid ounces it is 17.598 fl oz, because the Imperial fluid ounce is slightly smaller.
8 US fluid ounces is 236.588 ml — that is one standard US cup. In UK fluid ounces, 8 fl oz is 227.305 ml.
Approximately. 1 ml equals 0.033814 US fluid ounces, which rounds to 0.034 oz. For UK fluid ounces, 1 ml equals 0.035195 fl oz.
A US fluid ounce is 29.5735 ml and a UK (Imperial) fluid ounce is 28.4131 ml — the US ounce is about 4% larger. They are not interchangeable: 16 US fl oz is a US pint (473.176 ml), while 20 UK fl oz is a UK pint (568.261 ml).
Multiply the fluid ounces by 29.5735 for US ounces (8 fl oz × 29.5735 = 236.588 ml), or by 28.4131 for UK ounces. Use the swap button on this page to convert either direction.
Common kitchen amounts, in US and UK fluid ounces. Use the Print button for a clean copy — the calculator and FAQs are hidden on the printed page.
| Milliliters (ml) | US fluid ounces | UK fluid ounces |
|---|---|---|
| 30 ml | 1.014 fl oz | 1.056 fl oz |
| 50 ml | 1.691 fl oz | 1.760 fl oz |
| 100 ml | 3.381 fl oz | 3.520 fl oz |
| 150 ml | 5.072 fl oz | 5.279 fl oz |
| 200 ml | 6.763 fl oz | 7.039 fl oz |
| 250 ml | 8.454 fl oz | 8.799 fl oz |
| 300 ml | 10.144 fl oz | 10.559 fl oz |
| 500 ml | 16.907 fl oz | 17.598 fl oz |
| 750 ml | 25.361 fl oz | 26.396 fl oz |
| 1000 ml | 33.814 fl oz | 35.195 fl oz |
Disclaimer: Estimates only, not advice. Results use the standard conversion factors (1 US fl oz = 29.5735 ml, 1 UK fl oz = 28.4131 ml) and are rounded to the decimal places you choose. For medicine doses, always follow the label or ask a pharmacist — never convert a prescribed dose with a general converter.