How many grams are in 1 cup of bread flour?

One cup of bread flour weighs about 127 grams. This is slightly heavier than all-purpose flour (about 125 g per cup) because bread flour has a higher protein content, which packs a bit denser in a measuring cup.

Why is bread flour heavier than all-purpose flour by volume?

Bread flour is milled from hard wheat with more protein, roughly 12-14% versus 10-12% for all-purpose. The denser protein structure means slightly more mass fits into the same cup, even though the difference is small.

Does the spoon-and-level method matter for this conversion?

Yes. The 127 g per cup figure assumes the spoon-and-level method: spooning flour into the cup and leveling it with a knife, rather than scooping directly from the bag, which compacts the flour and adds extra weight.

Why does my bread flour weight not match the package label?

Brands mill and pack bread flour to slightly different finenesses, so package-listed weights can differ from this chart by a few grams per cup. For precise bread baking, weigh against the specific brand you are using when possible.

Is it better to measure bread flour by weight or by cups?

By weight. Scooping technique changes how much bread flour fits in a cup by a meaningful margin, while a gram measurement stays consistent every time, which matters most for hydration-sensitive doughs like bread and pizza.

How many grams is 1/3 cup of bread flour?

One-third cup of bread flour is about 42 grams, based on the 127 g per cup density used throughout this tool.

Bread Flour Cups to Grams

Name: Bread Flour Cups to Grams
Availability: InStock
Author: Nham Vu

Convert bread flour between US cups and grams using bread flour's actual density, with quick buttons for 1/4, 1/3, 1/2, 1, and 2 cups.

Convert Bread Flour

Amount in Cups

Quick:

Based on 127 g per cup for bread flour, spoon-and-level method. Brands vary by a few grams.

Result

Enter an amount above and click Convert.

Quick Reference Table

Grams per cup of bread flour, spoon-and-level method.

Amount	Grams

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Summary

Convert bread flour between US cups and grams using bread flour's actual density, with quick buttons for 1/4, 1/3, 1/2, 1, and 2 cups.

How it works

Enter an amount in cups, or switch to Grams → Cups if you already have a gram figure.
Type the number in the input field.
Click Convert to see the result using bread flour's density.
Use the quick reference table for common amounts without typing anything.
Copy the result with one click to paste into your notes or recipe.

Use cases

Scale a bread or pizza dough recipe that lists bread flour in cups onto a kitchen scale.
Convert grams from a European or metric recipe into US cup measurements.
Check how many grams are in 1/4 cup of bread flour before adding it to a starter.
Avoid over-packing bread flour, which throws off hydration ratios in yeasted dough.
Compare a bread flour measurement against an all-purpose flour recipe you are adapting.
Weigh out bread flour for baker percentage calculations where ratios matter.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu