Grams to Cups

Cake Flour: Texture, Measurement & Baking Guide

A finely milled, lower-protein flour for tender cakes and delicate crumbs.

1 cup = 120g

Cake flour

Measured

spooned and leveled

Category

Flour

Convert cake flour grams to cups

What is cake flour?

Cake flour is milled very finely and contains less gluten-forming protein than bread or all-purpose flour. It supports the soft, even crumb wanted in layer cakes, sponge cakes, and other tender bakes rather than the chew expected from bread flour.

The fine powder is easy to compact and should be kept sealed against humidity. Break up lumps, spoon it lightly, and level once; the adopted result is about 120 grams per US cup.

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

Fine particle size

Cake flour compacts readily, so a dipped or tapped cup can hold much more than an aerated spooned cup.

Product and preparation

Bleached, unbleached, sifted, and homemade blends should not be assumed to share one bulk density.

How to measure cake flour

spooned and leveled

  • Cake flour is finely milled and easy to compact, so the measurement method changes the result substantially.
  • Aerate, spoon, and level it; do not dip the cup into the bag for this conversion.
  • Bleached, unbleached, and homemade cake-flour blends can have different bulk densities.

Types & varieties

Unbleached cake flour

120g per cup

Aerated, spooned, and leveled for the adopted measurement.

Bleached cake flour

Can settle differently and should follow its package or recipe weight.

Common cake 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 and cornstarch

A common emergency blend, but it does not exactly reproduce commercial cake flour.

Frequently asked questions

How many grams are in 1 cup of cake flour?

Aerated, spooned, and leveled cake flour is about 120 grams per US cup under this site's convention.

Can I dip the measuring cup into cake flour?

Not for this conversion. Dipping compacts the fine flour and can produce a much heavier cup than spooning and leveling.

What does cake flour change in a cake?

Its lower protein content limits gluten development, while its fine milling helps produce a soft, even crumb. It is best suited to tender cakes rather than chewy breads.

How should cake flour be stored?

Seal it away from humidity and strong odors. Its fine particles absorb moisture readily, which encourages clumping and makes volume measurement less consistent.