The amount of cups that are in a 5lb bag of flour are 18 cups.
A 5lb bag for flour contains about 18 cups of flour.
Although flour can also settle and pack tightly or even be fluffed by sifting, so the exact yield of flour also depends on how the flour is measured.
The most accurate method of measuring flour is the spooned and leveled method, which yields 18 to 20 cups per bag of flour.
With the scooped directly method for measuring flour from the bag, you can pack in more flour, which also results in fewer cups or closer to 16 cups to 17 cups of flour per 5lb bag of flour.
Also the exact cup count also will vary slightly depending on the type of flour, you're measuring and using.
For bread flour, a 5lb bag of flour yields between 16 cups to 18 cups of flour.
For whole wheat flour, a 5lb bag of flour yields between 15 cups to 20 cups of flour.
For cake flour, a 5lb bag of flour yields between 18 cups to 20 cups of flour.
For pastry flour, a 5lb bag of flour yields around 21 cups of flour.
Using a digital kitchen scale is also always recommended when measuring flour, for the most consistent baking results.
A 5lb bag of flour is 8 x 4 x 5 inch in dimensions.
A 5lb bag of flour also equals roughly 4 to 4.5 quarts of volume.