Cake Flour to All Purpose Flour Calculator

🎂 Cake Flour to All Purpose Flour Calculator

Convert between cake flour and all-purpose flour with precise measurements in cups, tablespoons, and grams

Quick Presets
📏 Enter Your Measurement
💡 Pro Tip: To substitute cake flour with all-purpose flour, use 7/8 cup (14 tablespoons) of all-purpose flour plus 2 tablespoons of cornstarch for every 1 cup of cake flour. Sift the mixture twice for best results.
⚖️ Weighing Tip: For the most accurate results, measure flour by weight. 1 cup of cake flour weighs about 114g (4 oz), while 1 cup of all-purpose flour weighs about 125g (4.4 oz). The difference matters in baking.
📊 Nutrition Per Cup Comparison
455
Cal (AP Flour)
396
Cal (Cake Flour)
12.9g
Protein (AP)
8.6g
Protein (Cake)
95.4g
Carbs (AP)
84.8g
Carbs (Cake)
1.2g
Fat (AP)
0.9g
Fat (Cake)
📐 Cake Flour to All Purpose Flour Conversion Table
Cake Flour AP Flour Cornstarch Grams (Cake)
¼ cup3½ tbsp½ tbsp29g
⅓ cup4 tbsp + 2 tsp2 tsp38g
½ cup7 tbsp1 tbsp57g
¾ cup10½ tbsp1½ tbsp86g
1 cup⅞ cup (14 tbsp)2 tbsp114g
1½ cups1⅓ cups3 tbsp171g
2 cups1¾ cups¼ cup228g
2½ cups2⅙ cups5 tbsp285g
3 cups2⅝ cups6 tbsp342g
4 cups3½ cups½ cup456g
🌾 Flour Weight Reference (Per Cup)
Flour Type Grams/Cup Oz/Cup Protein %
Cake Flour114g4.0 oz7–8%
All-Purpose Flour125g4.4 oz10–12%
Pastry Flour120g4.2 oz8–9%
Bread Flour127g4.5 oz12–14%
Self-Rising Flour125g4.4 oz8.5–10%
Whole Wheat Flour120g4.2 oz13–14%
🎂 Common Baking Recipe Flour Amounts
Recipe Cake Flour AP Flour Sub Cornstarch Needed
Single Layer Cake1 cup (114g)⅞ cup (109g)2 tbsp (16g)
Two Layer Cake2 cups (228g)1¾ cups (219g)¼ cup (32g)
Sheet Cake3 cups (342g)2⅝ cups (328g)6 tbsp (48g)
Cupcakes (12)1½ cups (171g)1⅓ cups (164g)3 tbsp (24g)
Cupcakes (24)3 cups (342g)2⅝ cups (328g)6 tbsp (48g)
Tiered Wedding Cake8 cups (912g)7 cups (875g)1 cup (128g)
Pound Cake2 cups (228g)1¾ cups (219g)¼ cup (32g)
Angel Food Cake1 cup (114g)⅞ cup (109g)2 tbsp (16g)
🔍 Why It Works: Cornstarch has 0% protein (pure starch), so adding 2 tablespoons per cup effectively dilutes the 10–12% protein in all-purpose flour down to roughly 7–8%, matching cake flour. The lower protein produces less gluten, giving cakes their tender, soft crumb.

 

Cake flour runs about 7 to 8% protein while all-purpose sits closer to 10 or 12%, and that gap changes everything. For every cup of cake flour a recipe calls for, Ive found you need 7/8 cup of AP flour topped off with 2 tablespoons of cornstarch to compensate. One cup of cake flour weighs roughly 114 grams compared to 125 grams for AP flour.

Everything you will read soon comes directly from all human home bakers, discussions in forums and cooking groups everywhere on the net. No use of machines for counting no tool for changing units. Simply real life and experiences.

Cake flour: why it is different and how to replace it

Here the secret of cake flour: it comes from wheat, that is ground to have only a little bit of protein. We talk about 7 to 9 percent, while whole wheat flour has between 10 and 12 percent. That difference matters more than one could believe, because the protein helps to form gluten.

If you lower the protein amount, fewer gluten appears. And less gluten means that your baked goods become more soft and light.

One makes cake flour from soft wheat, and it almost always goes through a bleaching process. That bleaching is not simply for beauty… It truly changes how the flour absorbs humidity and what happens inside the cake.

What comes out? Tender crumb, that stays soft and moist, like that in angel cake or great chocolate cake. Whole wheat flour follows other rules.

It combines hard and soft wheat, so it works in cakes, but the resulting density grows. On the other hand, crumbs from whole wheat flour well handle heavy loads, for example the butter richness in rich cakes.

There is also pastry flour, that sits right between cake flour and all-purpose. It has a bit more force than cake flour and works perfectly for pastry doughs, biscuits, muffins and some cookies. Good to know also: cake flour serves as a good thickener.

Truly, it ranks among the best for making roux or for thickening juice.

Cannot find cake flour? Do not panic, it is not hopeless. Take a cup of whole wheat flour, remove two spoons and replace them with two spoons of cornstarch.

Later mix everything by screening. Some do that many times (even up to five), so that it becomes truly light and fluffy. The main effect is to ensure that everything mingles well, so that the cornstarch spreads without forming clumps.

Changing the type of flour will change the texture of you’re cake. It still will bake, but you maybe will not get exactly what you planned. Because recipes are designed for a certain flour, stay faithful to the listed kind to give the best result.

Here something that commonly surprises: cake flour does not always give the best results. Some cakes from it have tender and soft interior, but they can taste a bit flat and end with a raised, spongy look. Cake flour forms strong, yet flexible structure.

Different flours simply create different cakes, and really, none is totally better than theanother.

One commonly finds Swans Down and King Arthur in the stores. Swans Down usually is the most available, that one meets everywhere, while King Arthur appears more on special websites for orders. Also about weights: a cup of whole wheat flour weighs around 120 grams, so take 4 and a quarter of ounces.

However the weight of cake flour ranges according to the brand.

Cake Flour to All Purpose Flour Calculator

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