How many cups of cake flour equals AA flour?

AA flour is a type of all-purpose flour, while cake flour is finer and has a lower protein content. Generally, to substitute cake flour for all-purpose flour, you can use about 1 cup of cake flour for every cup of AA flour. However, if you're looking to convert measurements, 1 cup of cake flour weighs approximately 120 grams, whereas 1 cup of AA flour weighs around 125 grams. If a recipe specifically calls for AA flour, you might need to adjust the liquid ingredients slightly when using cake flour.