Cake Flour: Cups to Grams
One US cup (240 ml) of cake flour weighs about 120 grams, based on its typical kitchen density. Convert any amount below, or use the reference table for common cup fractions.
120 g
1 cups of cake flour, us legal cup
1 cup cake flour = 120 g (cupsngrams.com)
Based on cake flour at 120 g per US cup.
Cup standard: US legal cup (240 ml)
Baking from a UK, Australian or New Zealand recipe? Their cup is not the American one. Pick the standard your recipe assumes and every cup figure above follows it.
Cake Flour conversion table
| Cups | Grams | Millilitres | Tablespoons | Ounces (weight) |
|---|---|---|---|---|
| 1/4 cup | 30 g | 60 ml | 4 tbsp | 1.06 oz |
| 1/3 cup | 40 g | 80 ml | 5.33 tbsp | 1.41 oz |
| 1/2 cup | 60 g | 120 ml | 8 tbsp | 2.12 oz |
| 2/3 cup | 80 g | 160 ml | 10.7 tbsp | 2.82 oz |
| 3/4 cup | 90 g | 180 ml | 12 tbsp | 3.17 oz |
| 1 cup | 120 g | 240 ml | 16 tbsp | 4.23 oz |
| 1 1/2 cups | 180 g | 360 ml | 24 tbsp | 6.35 oz |
| 2 cups | 240 g | 480 ml | 32 tbsp | 8.47 oz |
| 2 1/2 cups | 300 g | 600 ml | 40 tbsp | 10.6 oz |
| 3 cups | 360 g | 720 ml | 48 tbsp | 12.7 oz |
Ounces here are ounces of weight (1 oz = 28.35 g), not fluid ounces. One US cup is 8 fluid ounces of volume whatever is in it, but what it weighs in ounces depends on the ingredient: a cup of cake flour weighs about 4.23 oz. Why these two are not the same.
In grams, 1/4 cup of cake flour is about 30 g, 1/3 cup is about 40 g, 1/2 cup is about 60 g, 2/3 cup is about 80 g, 3/4 cup is about 90 g, 1 cup is about 120 g, 1 1/2 cups is about 180 g, 2 cups is about 240 g and 3 cups is about 360 g.
A tablespoon of cake flour is about 7.5 grams, and a teaspoon is about 2.5 grams.
About measuring cake flour
Cake flour is milled finer and lower in protein than all-purpose flour, which is what gives sponges and layer cakes their tender, delicate crumb. One US cup weighs about 120 grams, a little less than all-purpose because the flour is so soft and light. It clumps readily, so sifting before measuring makes a real difference. If a recipe calls for cake flour and you only have all-purpose, weigh out the grams and remove a spoonful or two per cup, then add a little cornstarch.
Sift cake flour before measuring. It clumps easily and a packed cup throws off tender bakes.
How many grams is a cup of cake flour?
One US cup (240 ml) of cake flour weighs about 120 grams. Because a cup measures volume rather than weight, that figure is specific to cake flour and does not transfer to any other ingredient: the same cup holds 125 grams of all-purpose flour and 340 grams of honey.
- 1/4 cup of cake flour is about 30 grams
- 1/3 cup of cake flour is about 40 grams
- 1/2 cup of cake flour is about 60 grams
- 2/3 cup of cake flour is about 80 grams
- 3/4 cup of cake flour is about 90 grams
- 1 1/2 cups of cake flour is about 180 grams
- 2 cups of cake flour is about 240 grams
- 3 cups of cake flour is about 360 grams
Working the other way round, 100 grams of cake flour is about 0.833 cups, and 500 grams is about 4.17 cups.
Does it matter which cup my recipe means?
It does, though less than the ingredient itself. This page uses the US legal cup of 240 ml. An Australian metric cup is 250 ml, so a metric cup of cake flour comes to about 125 grams, and the old British imperial cup of 284.1 ml holds about 142 grams. See cup sizes by country for every standard side by side.
Frequently asked questions
How many grams is 1 cup of cake flour?
One US cup of cake flour is about 120 grams. It weighs slightly less than all-purpose flour because it is milled so fine and soft.
How do I make a cake flour substitute?
For each cup, measure 120 grams of all-purpose flour, remove two tablespoons, and replace them with two tablespoons of cornstarch. Whisk well before using.
Why weigh cake flour instead of scooping?
Cake flour is very light and clumpy, so scooped cups vary wildly. Weighing to 120 grams per cup keeps your crumb consistent from bake to bake.
Where this figure comes from
We have not yet found a published reference that states a weight for a cup of cake flour. The 120 grams on this page follows the calibration the rest of the site is built on, with butter at 227 grams per cup, water at 240, all-purpose flour at 125 and granulated sugar at 200. Treat it as a good working figure rather than a cited one. If you have a better source, tell us and we will check it and credit you.
Published figures for the same ingredient vary between references anyway, because how an ingredient is packed changes what a cup of it weighs. Treat any cup figure as accurate to within a few percent, and weigh on a scale when a recipe is sensitive. Our full approach is on the methodology page.
Figures last verified . Compiled by the CupsToGrams editorial team at FusionStudios. Spotted a value that looks off? Tell us.