Quick answer: A 5 lb bag of all-purpose flour (2.27 kg) holds about 19 cups. A typical sandwich loaf uses 3 to 4 cups, and a batch of chocolate chip cookies about 2 1/4 cups, so a bag covers roughly five or six loaves or eight batches of cookies.
Checked Oct 23, 2026. King Arthur lists 1 cup of all-purpose flour as 120 g. 100 g ÷ 120 g = 0.833 cup, which this converter shows as 0.833 cups and rounds to the nearest kitchen measure, 7/8 cup.
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Cups per pound and per bag
Flour
1 lb
2 lb bag
5 lb bag
10 lb bag
All-purpose flour
3.78
7.6
18.9
37.8
Bread flour
3.78
7.6
18.9
37.8
Whole wheat flour
4.01
8
20.1
40.1
Cake flour
3.78
7.6
18.9
37.8
Planning with a 5 lb bag
A 5 lb bag of all-purpose flour (2.27 kg) holds about 19 cups. A typical sandwich loaf uses 3 to 4 cups, and a batch of chocolate chip cookies about 2 1/4 cups, so a bag covers roughly five or six loaves or eight batches of cookies. If you scoop rather than spoon, each cup weighs more and you will get fewer cups from the bag.
Why bags don’t say “cups”
Flour is sold by weight because its volume changes with how it settles in shipping. Nutrition labels list a serving as 1/4 cup (30 g), which matches the 120 g per cup figure used here.
Source: King Arthur Baking ingredient weight chart. Cup = US cup (about 236.6 ml). Results are averages; weigh for precision.
