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Bread Flour: Protein, Measurement & Dough Guide

A higher-protein wheat flour built for chewy loaves, strong gluten networks, and well-risen doughs.

1 cup = 120g

Bread flour

Measured

spooned and leveled

Category

Flour

Convert bread flour grams to cups

What is bread flour?

Bread flour has more gluten-forming protein than all-purpose flour, helping yeasted doughs hold gas and develop chew. It is most useful in lean loaves, bagels, pizza dough, and other recipes where elasticity and structure matter.

Store it sealed and dry so humidity does not alter the flour or its handling. For this record, aerate the flour, spoon it into the cup, and level it without packing; that method gives about 120 grams per US cup. Hydration-sensitive doughs should still be weighed.

Measurement profile

Grams per cup
120g
Cup standard
US cup / 240 ml
Ingredient state
unsifted, aerated
Confidence
Medium

Data last verified: August 5, 2026

Source observations

Why measurements vary

Packing and settling

Dipping or shaking the cup compresses flour and can move it well above the spoon-and-level reference.

Brand and humidity

Milling, protein content, and absorbed moisture change bulk density even when two bags are both labelled bread flour.

How to measure bread flour

spooned and leveled

  • Bread flour is higher in protein than all-purpose flour, but protein content alone does not fix its cup weight.
  • Fluff the flour, spoon it into the cup, and level it without shaking or packing.
  • Brand and humidity differences can move a cup well above the adopted 120g convention, so weigh when dough hydration matters.

Types & varieties

Bread flour

120g per cup

Unsifted, aerated, then spooned and leveled for this reference.

High-gluten flour

Usually higher in protein and not assumed to share the same cup weight.

Common bread flour measurements

These limited reference values are derived from the canonical cup weight. Use the converter for any other amount.

CupsGrams
¼ cup30g
⅓ cup40g
½ cup60g
1 cup120g

Common substitutes

All-purpose flour

Produces a softer structure and may need a small liquid adjustment.

Related measurement resources

Convert bread flour grams to cups

Convert cups of bread flour to grams

Browse related ingredient guides

How ingredient measurements are verified

Frequently asked questions

How many grams are in 1 cup of bread flour?

Under this site's spoon-and-level method, 1 US cup is about 120 grams. Scooping or using a denser brand can weigh substantially more.

Why do bread-flour cup weights disagree?

Protein level, milling, humidity, brand, and whether the cup was spooned or dipped all change bulk density. Use the convention attached to the recipe when available.

What makes bread flour different from all-purpose flour?

Bread flour generally has more gluten-forming protein, so dough can retain gas and develop a chewier, stronger crumb. That functional difference remains even when two flours have a similar cup weight.

How should bread flour be stored?

Keep it sealed in a cool, dry place so it does not absorb humidity or pantry odors. For long storage, an airtight container in the freezer slows oxidation and pest activity.