In the United States customary system, there are 8 fluid ounces in a cup. However, when measuring dry ingredients, the conversion may vary depending on the ingredient’s density. Here are some common conversions for dry ingredients:
- 1 cup of all-purpose flour: approximately 4.5 ounces
- 1 cup of granulated sugar: approximately 7 ounces
- 1 cup of butter or margarine: approximately 8 ounces (or 2 sticks)
- 1 cup of powdered sugar: approximately 4 ounces
It’s important to note that these conversions are approximate, and the weight of ingredients can vary slightly based on factors like moisture content and packing density. For precise measurements, it’s recommended to use a kitchen scale.