Convert ounces (US or UK) to milliliters in one click. Understand the difference, see formulas, and get real-life examples for accurate liquid measurements
A fluid ounce (fl oz) is a unit used to measure volume, commonly in the United States and the United Kingdom. But there is a catch U.S. fluid ounces and UK (Imperial) fluid ounces are slightly different
So, when converting, it's important to know whether you are using U.S. or Imperial measurements.
A milliliter (ml) is a metric unit of volume, widely used around the world, especially in science, cooking, and everyday life.
U.S. Fluid Ounce Conversion
If you are using the U.S. system, each fluid ounce is about 29.57 milliliters. So, to find out how many milliliters something is, you can multiply the number of ounces by 29.57.
Example: If you have 2 U.S. fluid ounces of juice then conversion will be like:
2 U.S. fl oz × 29.5735 ml = 59.147 ml
The UK uses a slightly smaller ounce — around 28.41 milliliters. So, if you are following a British recipe, multiply the ounces by 28.41.
Example: 4 UK fluid ounces of milk would be:
4 UK fl oz × 28.4131 ml = 113.6524 ml
| U.S. Fluid Ounces (oz) | Milliliters (ml) |
|---|---|
| 1 oz | 29.57 ml |
| 2 oz | 59.15 ml |
| 3 oz | 88.72 ml |
| 4 oz | 118.29 ml |
| 5 oz | 147.87 ml |
| 6 oz | 177.44 ml |
| 7 oz | 207.01 ml |
| 8 oz | 236.59 ml |
| 9 oz | 266.16 ml |
| 10 oz | 295.73 ml |
In the U.S. system, 1 fluid ounce equals approximately 29.57 milliliters, while in the UK (Imperial) system, 1 fluid ounce is about 28.41 milliliters
To convert from ounces (oz) to milliliters (ml), you can simply multiply the number of fluid ounces by 29.57 if you’re using U.S. measurements, or by 28.41 if it’s based on the UK (Imperial) system
If you’re using U.S. fluid ounces, 16 oz is equal to 473.12 milliliters (16 × 29.57). If you’re using UK (Imperial) fluid ounces, 16 oz converts to 454.56 milliliters (16 × 28.41)