Quick Answer
One US cup of all-purpose flour weighs about 120 grams. That works out to 7.5 g per tablespoon and 2.5 g per teaspoon. Scoop and level, do not pack. Sifted flour weighs less (~100 g/cup). Weights vary slightly by brand, moisture, and how tightly you pack - for precise baking, a kitchen scale beats volume measures.
Key Facts
- 1 cup all-purpose flour = 120 g
- 1 tablespoon = 7.5 g
- 1 teaspoon = 2.5 g
- 1/2 cup = 60 g
- Scoop and level, do not pack. Sifted flour weighs less (~100 g/cup).
- Values assume standard US measures (1 cup = 236.59 mL)
Frequently Asked Questions
How many grams in 1 cup of all-purpose flour?
About 120 grams, scoop-and-level for dry ingredients. Scoop and level, do not pack. Sifted flour weighs less (~100 g/cup).
How many grams in a tablespoon of all-purpose flour?
One US tablespoon (15 mL) of all-purpose flour is about 7.5 grams. A teaspoon is 2.5 g.
Why does all-purpose flour weigh more (or less) than water?
Dry ingredients are weighed by how they pack into the cup volume. All-Purpose Flour has an apparent density of about 0.51 g/mL - lighter than water - depending on particle size and air gaps.
How many cups is 100 g of all-purpose flour?
100 g ÷ 120 g/cup ≈ 0.83 cups - about a little less than a full cup. The reverse table on this page covers 25-1000 g.
Should I weigh or measure by volume?
Weighing is more accurate - volume measures vary with how you scoop, pack, and level, and brands differ by 5-15%. For cookies and cakes where ratios matter, grams are the professional standard. The tables here convert either direction.