Cooking converter · USDA gram weights

Cake Flour Cups to Grams

Quick answer

1 cup of cake flour weighs 137 g (4.83 oz). 1 tablespoon is 8.6 g and 1 teaspoon is 2.9 g.

1 cup: 137g; 4.83 oz
1 tablespoon: 8.6g
1 teaspoon: 2.9g
100 g: 0.73cups; of a US cup

Cake flour is a low-protein, finely milled flour for tender cakes and cupcakes. The USDA portion is for flour dipped from the bag and not sifted, so a recipe that says to sift first will use a lighter cup than the one on this page. Sponge cakes, layer cakes and cupcakes are where it earns its place, since the lower protein keeps the crumb soft. Bakers who only have all-purpose flour sometimes swap in a mix with cornstarch, which is a different ingredient with its own page here.

Convert any amount of cake flour

Starts at 1 cup of cake flour in grams (137 g); change the units to go from grams back to cups.

Amount of cake flourFromTo

1 cup of cake flour is 137 grams

Cups: 1
Tablespoons: 16
Teaspoons: 48
Grams: 137
Ounces: 4.83

Cake Flour: cups to grams and ounces

Cups of cake flour in grams and ounces
Cups	Grams	Ounces
1/4 cup	34.3	1.21
1/3 cup	45.7	1.61
1/2 cup	68.5	2.42
2/3 cup	91.3	3.22
3/4 cup	102.8	3.62
1 cup	137	4.83
1 1/2 cups	205.5	7.25
2 cups	274	9.67
3 cups	411	14.5
4 cups	548	19.33

Tablespoons and teaspoons of cake flour in grams and ounces
Spoons	Grams	Ounces
1/2 tablespoon	4.3	0.15
1 tablespoon	8.6	0.3
2 tablespoons	17.1	0.6
3 tablespoons	25.7	0.91
4 tablespoons	34.3	1.21
6 tablespoons	51.4	1.81
8 tablespoons	68.5	2.42
1/4 teaspoon	0.71	0.03
1/2 teaspoon	1.4	0.05
3/4 teaspoon	2.1	0.08
1 teaspoon	2.9	0.1
2 teaspoons	5.7	0.2
3 teaspoons	8.6	0.3

Cake Flour: grams and ounces to cups

For a recipe written in grams or ounces, here is how much of a US cup each weight of cake flour fills.

Grams of cake flour in cups, tablespoons and ounces
Grams	Cups	Tablespoons	Ounces
25 g	0.18	2.92	0.88
50 g	0.36	5.84	1.76
100 g	0.73	11.68	3.53
125 g	0.91	14.6	4.41
150 g	1.09	17.52	5.29
200 g	1.46	23.36	7.05
250 g	1.82	29.2	8.82
300 g	2.19	35.03	10.58
400 g	2.92	46.71	14.11
500 g	3.65	58.39	17.64

Ounces of cake flour in grams, cups and tablespoons
Ounces (weight)	Grams	Cups	Tablespoons
1 oz	28.3	0.21	3.31
2 oz	56.7	0.41	6.62
3 oz	85	0.62	9.93
4 oz	113.4	0.83	13.24
6 oz	170.1	1.24	19.86
8 oz	226.8	1.66	26.49
12 oz	340.2	2.48	39.73
16 oz	453.6	3.31	52.97

What a cup of cake flour weighs, and why it can differ

USDA’s weight for “1 cup unsifted, dipped” is 137 g. Next to a cup of water, which holds about 236.6 g, that is 58% of the weight of a cup of water, so a lot of the cup is air. The same cup works out at 0.58 g per millilitre.

USDA lists one cup measure for cake flour (“1 cup unsifted, dipped”), so this page has no second figure to compare it with; if a recipe depends on the exact amount, weigh it.

USDA lists no tablespoon or teaspoon measure for this entry, so that weight is the cup weight divided by the US ratio (16 tablespoons or 48 teaspoons to the cup).

Frequently asked questions

How many grams are in 1 cup of cake flour?

USDA measures 1 cup of cake flour (its portion is listed as “1 cup unsifted, dipped”) at 137 g, which is 4.83 oz.

How many cups is 500 g of cake flour?

500 g of cake flour is 3.65 cups, using 137 g per cup of cake flour. A 1 kg bag of cake flour would fill 7.3 cups, and a 1 lb pack of cake flour would fill 3.31.

How much does a part of a cup of cake flour weigh?

Half a cup of cake flour is 68.5 g, a third of a cup of cake flour is 45.7 g and a quarter cup of cake flour is 34.3 g. For small amounts, 1 tablespoon of cake flour is 8.6 g (0.3 oz) and 2 tablespoons of cake flour are 17.1 g.

If my recipe uses 250 ml metric cups, how much cake flour is that?

A 250 ml cup is about 5.7% larger than a US cup, so a metric cup of cake flour comes to about 144.8 g, going by USDA’s 137 g for a US cup of cake flour. The weights on this page are for the US cup of about 237 ml.

Is it better to weigh cake flour than to measure it by the cup?

For baking, yes. USDA lists one cup measure for cake flour (“1 cup unsifted, dipped”), so this page has no second figure to compare it with; if a recipe depends on the exact amount, weigh it. Next to water, a cup of cake flour is 58% of the weight of a cup of water, so a lot of the cup is air, and 137 g on a scale is 137 g however the cake flour was scooped.

What weighs about the same as a cup of cake flour?

Among these converters, bread flour (137 g per cup) and whole almonds (143 g per cup) come closest to 137 g. Same volume, different ingredient: the weights are close, but the foods are not interchangeable.

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Weights are USDA averages for the entry named below. Packing, sifting, brand and moisture change the weight of a real cup, so treat them as a good starting point, not a lab measurement.

USDA describes this entry as “Wheat flour, white, cake, enriched” (FoodData Central SR Legacy 2018-04).

Source: USDA FoodData Central, FDC 169723, retrieved October 22, 2026. How we calculate.