Cooking converter · USDA gram weights

Bread Flour Cups to Grams

Quick answer

1 cup of bread 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

Bread flour is milled from harder wheat with more protein, which is why yeast doughs rise and chew better on it. It is weighed like any flour, but a recipe that says bread flour should not be swapped for cake flour just because the cup weights match. Sourdough loaves, bagels and pizza bases are the usual home for it, where a strong gluten network holds the shape of the dough. Many bakers write these recipes in grams for exactly this reason. Bread flour also takes up more water than softer flours, so a dough that was written for it can feel too wet if you switch to all-purpose flour without adjusting.

Convert any amount of bread flour

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

Amount of bread flourFromTo

1 cup of bread flour is 137 grams

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

Bread Flour: cups to grams and ounces

Cups of bread 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 bread 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

Bread 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 bread flour fills.

Grams of bread 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 bread 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 bread flour weighs, and why it can differ

USDA’s weight for “1 cup” 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 bread flour (“1 cup”), 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 bread flour?

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

How many cups is 500 g of bread flour?

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

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

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

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

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

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

For baking, yes. USDA lists one cup measure for bread flour (“1 cup”), 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 bread 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 bread flour was scooped.

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

Among these converters, cake 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, bread, enriched” (FoodData Central SR Legacy 2018-04).

Source: USDA FoodData Central, FDC 168896, retrieved October 22, 2026. How we calculate.