Both ounces (oz.) and milliliters (ml.) measure the volume of liquids. In the United States, the ounce is the standard measure for liquid, while many European countries use milliliters. One fluid ounce always equals 28.413 milliliters, meaning that conversion between the two units requires only one mathematical step to calculate.
Instructions
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1
Write down the number of ounces you want to convert to milliliters. For example, imagine that you want to convert two ounces to milliliters.
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2
Multiply the number in Step 1 by 28.413. In the example, you would multiply 2 by 28.413.
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3
Change the units on the number you calculated in Step 2 to milliliters. In the example, you would arrive at 56.826 ml.