UK fluid ounces
UK fluid ounces are used in the United Kingdom for measuring liquids. One UK fluid ounce is about 28.41 milliliters. It is important to note that UK fluid ounces differ slightly from US fluid ounces, with one UK fluid ounce being equal to 1.04 US fluid ounces.
US fluid ounces
A US fluid ounces (sometimes referred to simply as an ounce) is a unit of volume used in the United States to measure liquids. One US fluid ounce is about 0.0296 liters.