Enter a value in cups or fluid ounces and this Cups to Ounces Converter instantly shows the equivalent measurement in the other unit. Select a common ingredient like water, flour, sugar, butter, or milk to get a weight-based conversion in ounces — or keep it as a simple fluid ounce conversion. Perfect for scaling recipes without guesswork.
Fluid Ounces
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Weight in Ounces
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Cups (for reference)
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Tablespoons
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There are 8 US fluid ounces in 1 US cup. This is a volume-to-volume conversion. If you need a weight conversion (e.g. for baking), the number of ounces will vary depending on the ingredient's density — for example, 1 cup of water weighs about 8.35 oz, while 1 cup of all-purpose flour weighs around 4.4 oz.
For fluid ounces, simply multiply the number of cups by 8. So 3 cups = 24 fluid ounces. For weight ounces, you need to account for the ingredient's density: multiply cups by 8.3454 (oz/cup for water) then by the ingredient's density in g/mL. This calculator handles all of that automatically when you select an ingredient.
No, they are different measurements. Fluid ounces (fl oz) measure volume, while weight ounces (oz) measure mass. For water, they are very close in value because water has a density near 1 g/mL. However, for denser or lighter ingredients like flour or oil, the values differ significantly.
No — there are 8 US fluid ounces in 1 US cup, not 16. You may be thinking of a pint, which equals 16 fluid ounces or 2 cups. Always double-check your unit conversions when scaling recipes.
62 fluid ounces equals 7.75 cups (62 ÷ 8 = 7.75). You can also work backwards with this converter by entering the ounce equivalent in context — just divide your oz value by 8 to get cups.
A cup is a unit of volume used primarily in the United States for cooking and recipes. One US cup equals 8 US fluid ounces, 16 tablespoons, or approximately 236.6 milliliters. It is slightly different from a metric cup (250 mL) used in some other countries.
A fluid ounce (fl oz) is a unit of volume in the US customary system. One US fluid ounce is approximately 29.57 milliliters. It is commonly used to measure liquids in recipes, beverages, and nutrition labels. Note that the US fluid ounce differs slightly from the Imperial fluid ounce used in the UK.
You'll typically convert cups to ounces when following recipes that list ingredients in different units, measuring liquids with a scale instead of a measuring cup, or scaling a recipe up or down. Weight measurements (ounces) are generally more precise than volume measurements (cups), especially for dry ingredients like flour and sugar.