Convert Cake Flour from Ounces to Cup (US)

How many US cups is 1 ounce of cake flour?

1 ounce of cake flour (soft flour) is 0.25 US cups. 2 ounces of cake flour is 0.49 US cups. 1/2 ounce of cake flour is 0.12 US cups. Use the converter below for any amount.

Cake flour is finely milled soft wheat with a low protein content of around 7 to 9%, giving a tender, fine crumb in sponge cakes, chiffon cakes, and biscuits. One metric cup (250 ml) weighs around 120 grams or 4.23 ounces. When a recipe calls for cake flour in cups but you only have scales, converting by weight gives the lift and softness the recipe expects.

Cake flour is sold in 1 kg or 500 g bags, while recipes mix cups, grams, and tablespoons. Weighing in grams gives more consistent results than scooping the powder-fine flour into a cup.

Also known as

  • soft flour
  • low-protein flour
  • soft-wheat flour

Plain flour carries more protein than cake flour (around 10 to 12% vs 7 to 9%), giving a sturdier crumb. They are close in weight (125 g vs 120 g per cup); for a quick stand-in when out of cake flour, sift 1 cup of plain flour with 2 tablespoons removed and replaced with cornstarch. See our Plain Flour converter.

Bread flour sits at the high end of protein (around 12 to 14%) while cake flour sits at the low end (7 to 9%), so they produce opposite textures. They differ by cup (130 g vs 120 g); they are not a straight swap, but blending half cake and half bread flour gives roughly the protein of plain flour. See our Bread Flour converter.

Out of cake flour? See cake flour substitutes →

No scale? No worries. The tool below gives a good estimate, but for exact bakes a digital kitchen scale is worth it.

Cake Flour Measurement Converter

Enter a value and pick your units.

Result

0 Cup (US)

Common Cake Flour Conversions

Here are the most common cake flour conversions from ounces to cups (US).

OuncesCups (US)
1 oz0.25 cups (US)
2 oz0.49 cups (US)
3 oz0.74 cups (US)
4 oz0.99 cups (US)
5 oz1.23 cups (US)
6 oz1.48 cups (US)
8 oz1.97 cups (US)
10 oz2.46 cups (US)
12 oz2.96 cups (US)

Cake Flour Conversion Chart

The conversion chart below gives a quick reference for converting cake flour from Ounces to Cup (US) and other measurements.

ouncescup(US)cupgramstbsptsp
2.5 oz0.62 cup (US)0.59 cup70.92 g9.85 tbsp29.55 tsp
5 oz1.23 cup (US)1.18 cup141.84 g19.7 tbsp59.1 tsp
7.5 oz1.85 cup (US)1.77 cup212.77 g29.55 tbsp88.65 tsp
10 oz2.46 cup (US)2.36 cup283.69 g39.4 tbsp118.2 tsp

Frequently Asked Questions

How many US cups is 1 ounce of cake flour?
1 ounce of cake flour is 0.25 US cups. The ratio is fixed, so 2 ounces of cake flour is 0.49 US cups and 0.5 ounces is 0.12 US cups. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the cake flour converter
How many US cups is 1.5 ounces of cake flour?
1.5 ounces of cake flour is 0.37 US cups. The ratio is fixed, so 1 ounce of cake flour is 0.25 US cups and 2 ounces is 0.49 US cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many US cups is 2 ounces of cake flour?
2 ounces of cake flour is 0.49 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 ounce of cake flour is 0.25 US cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact US cups reading.
How many ounces of cake flour is 0.25 US cups?
0.25 US cups of cake flour is 1.02 ounces. The conversion works the same in reverse, so you can switch between US cups and ounces without changing the result. This helps when a recipe lists ounces but you would rather weigh or measure in US cups. The converter above and the chart below cover both directions for any amount.
How many US cups is 1 ounce of soft flour?
Soft flour is another name for cake flour, so 1 ounce of soft flour is 0.25 US cups, exactly the same as cake flour. The figure does not change with the name: 2 ounces is 0.49 US cups and 0.5 ounces is 0.12 US cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
How many US cups is 1/2 ounce of cake flour?
1/2 ounce of cake flour is 0.12 US cups. The ratio is fixed, so 1 ounce of cake flour is 0.25 US cups and 2 ounces is 0.49 US cups. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.

Other Ingredients

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