How many grams are in 1 cup of cake flour?

One cup of cake flour weighs about 100 grams. This is noticeably lighter than all-purpose flour (about 125 g per cup) because cake flour is milled finer from soft, low-protein wheat and sifted before packaging.

Why is cake flour lighter than all-purpose flour by volume?

Cake flour comes from soft wheat with only about 7-9% protein, compared to 10-12% for all-purpose flour. It is also milled to a much finer, powdery texture, so less mass settles into the same cup.

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

Yes. The 100 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 cake flour weight not match the package label?

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

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

By weight. Scooping technique changes how much cake flour fits in a cup by a meaningful margin, while a gram measurement stays consistent every time, which matters most for structure-sensitive bakes like sponge and chiffon cakes.

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

One-third cup of cake flour is about 33 grams, based on the 100 g per cup density used throughout this tool.

Cake Flour Cups to Grams

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

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

Convert Cake Flour

Amount in Cups

Quick:

Based on 100 g per cup for cake 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 cake flour, spoon-and-level method.

Amount	Grams

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Summary

Convert cake flour between US cups and grams using cake 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 cake 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 cake or cupcake recipe that lists cake 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 1/3 cup of cake flour before adding it to a batter.
Avoid over-packing cake flour, which makes cakes dense instead of light and tender.
Compare a cake flour measurement against an all-purpose flour recipe you are adapting.
Weigh out cake flour precisely for layer cakes, chiffon cakes, or sponge cakes.

Frequently Asked Questions

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