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Protein comparison

Milk (whole) vs Soy milk: which has more protein?

Milk (whole) gives you 7.7 g of protein per 1 cup; soy milk gives you 7.9 g per 1 cup. On equal weight it is 3.15 g against 3.27 g per 100 g. The full side-by-side, from the same USDA-sourced records as the rest of the site:

Protein and calorie figures for Milk (whole) and Soy milk, per serving and per 100 g.
MeasureMilk (whole)Soy milk
Typical serving1 cup (244 g)1 cup (243 g)
Protein per serving7.7 g7.9 g
Protein per 100 g3.15 g3.27 g
Calories per serving149 kcal131 kcal
Protein density21% of calories24% of calories
Share of 50 g Daily Value15%16%
Protein qualityCompleteComplete
CategoryDairySoy foods

The verdict

On equal weight this is close to a tie: milk (whole) has 3.15 g of protein per 100 g and soy milk has 3.27 g. Per typical serving they are also nearly even: 7.7 g per 1 cup of milk (whole) against 7.9 g per 1 cup of soy milk.

For the full breakdown of each food, see the protein in milk (whole) and protein in soy milk pages, each with its USDA FoodData Central record id.

Quick answers

Milk (whole) vs Soy milk FAQ

Which has more protein, milk (whole) or soy milk?

Soy milk has more protein per 100 g: 3.27 g against 3.15 g. Per typical serving, milk (whole) provides 7.7 g (1 cup) and soy milk provides 7.9 g (1 cup).

Is milk (whole) or soy milk more protein-dense?

Soy milk is the more protein-dense of the two: about 24% of its calories come from protein, against 21% for milk (whole).

Are milk (whole) and soy milk complete proteins?

Yes, both. Milk (whole) and soy milk each supply all nine essential amino acids in adequate amounts, so either can carry a meal's protein on its own.

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