Converter
Why all-purpose flour needs its own conversion
All-Purpose Flour weighs about 120g per cup — quite light and airy compared to many kitchen staples. Spooned and leveled, not packed or scooped. A cup is a unit of volume, so ingredients this different in density can't share one generic conversion factor — using a single "1 cup = X g" rule for everything will be wrong for at least some of what you cook.
Common measurement mistakes
- Using a generic cup-to-gram factor for every ingredient — all-purpose flour does not weigh the same per cup as most other ingredients.
- Measurement note: Spooned and leveled, not packed or scooped.
- Confusing weight ounces with fluid ounces when a recipe lists "oz" — they are not interchangeable.
Frequently asked questions
How many grams are in a cup of all-purpose flour?
About 120g, spooned and leveled, not packed or scooped.
Does this conversion work for every brand or variety of all-purpose flour?
It’s a close approximation based on King Arthur Baking (placeholder). Minor variations in moisture, grain, or brand can shift the exact weight slightly, but this figure works well for everyday cooking and baking.