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Cooking conversion
Cups of Milk (Whole) to Ounces
How many ounces are in cups of milk? Type a value below to see the result instantly. Cooking conversions depend on the density of each ingredient — the math here uses 1.030 g/mL for milk.
Calculator
1 cup of milk = 8.5958 oz
Cups of Milk (Whole) to Ounces Conversion Table
Common values for milk:
| Cups of milk | Ounces |
|---|---|
| 0.25 cup | 2.1489 oz |
| 0.5 cup | 4.2979 oz |
| 1 cup | 8.5958 oz |
| 2 cup | 17.1915 oz |
| 3 cup | 25.7873 oz |
| 4 cup | 34.383 oz |
| 5 cup | 42.9788 oz |
| 8 cup | 68.7661 oz |
| 10 cup | 85.9576 oz |
How this works
Milk has a density of about 1.030 g/mL (usda fooddata central). That means 1 mL of milk weighs 1.030 grams.
Ounces = cups × 8.5958
Note: Whole milk. 2% is ~1.029, skim ~1.033.
Why a cup of milk doesn't always weigh the same
Volume measurements are forgiving in some ways and brutal in others. A cup of milk can vary by 10-20% in weight depending on how it's measured: spooned vs scooped, packed vs loose, sifted vs unsifted. The density figure used here matches the most common published recipe conventions, but if you're after baking precision, weighing on a kitchen scale is more accurate than measuring by volume.