How many ounces are in a cup?

How many grams in a cup of flour in an ounce?

1 ounce of flour in grams = 25 gm

1 pound of flour in grams = 450 gm

1 teaspoon of flour in grams = 3.3 gm

1 tablespoon of flour in grams = 15 gm

1 cup contain about 8 ounces. 1 U.S cup (236.59 ml) is 8 U.S fluid ounces but 1 U.S cup is 8.327 ounce. The old U.K recepie cup is equivalent to about 10 U.K ounces and 9.607 U.S fluid ounces.
1 international metric cup is 8.454 U.S and 8.799 U.K ounces.

For people that cook and work with recipe, it is important that you understand how this works so you do not miss up your calculations.