Converter
Why bread flour needs its own conversion
Bread Flour weighs about 120g per cup — quite light and airy compared to many kitchen staples. Spooned and leveled. King Arthur lists bread flour identical to AP at 120 g/cup; some sources cite 127-130 g. 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 — bread flour does not weigh the same per cup as most other ingredients.
- Measurement note: Spooned and leveled. King Arthur lists bread flour identical to AP at 120 g/cup; some sources cite 127-130 g.
- 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 bread flour?
About 120g, spooned and leveled. King Arthur lists bread flour identical to AP at 120 g/cup; some sources cite 127-130 g.
Does this conversion work for every brand or variety of bread flour?
It’s a close approximation based on King Arthur Baking. Minor variations in moisture, grain, or brand can shift the exact weight slightly, but this figure works well for everyday cooking and baking.