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Protein in soy milk: 3.3 g per 100 g

There are 7.9 g of protein in 1 cup of soy milk (243 g). 100 g of soy milk has 3.3 g of protein and 54 kcal. The values come from USDA FoodData Central, and the lookup below works out any other amount.

Protein

7.9g protein

in 1 cup of soy milk (243 g)

3.3 g of protein and 54 kcal in 100 g

6.1 g of protein per 100 kcal

USDA FoodData Central, FDC ID 172446

Protein in soy milk per portion

Protein in each portion the USDA record lists, and in 100 g:

Protein in soy milk per portion
Portion	Weight	Protein
1 cup of soy milk	243 g	7.9 g
1 fl oz of soy milk	30.6 g	1.0 g
100 g of soy milk	100 g	3.3 g

Protein per 100 kcal

There are 6.1 g of protein in every 100 kcal of soy milk. When your appetite is small, this number shows how much protein a food brings for the energy it takes up. In our table of 50 foods ranked by protein per 100 g, this food is number 42.

Soy milk compared with similar foods

Protein per 100 g and per 100 kcal, from the USDA record of each food:

Soy milk compared with similar foods
Food	Protein per 100 g	Protein per 100 kcal
Soy milk	3.3 g	6.1 g
Milk	3.2 g	5.2 g
Tofu	9.0 g	11.6 g
Plain yogurt	3.5 g	5.7 g

See all 50 foods ranked by protein in the protein in foods table. For the published protein reference for your body weight, see the protein calculator.

About these values

The record is plain or vanilla soy milk without added vitamins or minerals. The USDA record is "Soymilk, original and vanilla, unfortified" (SR Legacy, FDC ID 172446). It gives 3.27 g of protein and 54 kcal per 100 g.

Protein in a portion is its weight times the protein per 100 g, divided by 100. For 1 cup of soy milk: 243 × 3.27 ÷ 100 = 7.9 g. Values on this page are rounded to 0.1 g.

A packaged food's own label can differ from the USDA average. When you have the label, its numbers are the ones for that product.