Food database · Protein supplements
Protein content
A 1 scoop serving of soy protein powder contains 25 g of protein - an excellent source of protein, about 50% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is very protein-dense.
| Serving | 1 scoop (45 g) |
|---|---|
| Protein per serving | 25 g |
| Protein per 100 g | 55.6 g |
| Calories per serving | 175 kcal |
| Protein density | 57% of calories |
| Share of 50 g Daily Value | 50% |
| Protein quality | Complete protein |
| Category | Protein supplements |
| Food type | Prepared / processed |
| USDA record | FoodData Central #173181 |
A typical 1 scoop serving of soy protein powder contains 25 grams of protein (55.6 g per 100 g), which makes it an excellent source of protein. That covers roughly 50% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
About 57% of the calories in soy protein powder come from protein, which makes it very protein-dense - close to the practical ceiling for a whole food. Foods in this band are the ones that let you raise your protein intake without raising your calorie intake much at all.
Among the 11 protein supplements in the database, soy protein powder ranks 1st by protein per serving, and 43rd out of all 796 foods on the site. Set against egg white protein powder, another protein supplement entry in the database, a serving carries about 2.3 g more protein (egg white protein powder has 22.7 g per 1 oz).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving above is counted by piece at 45 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
One of the few plant protein powders that is a complete protein on its own.
Source: USDA FoodData Central #173181 - "Beverages, Protein powder soy based" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Soy protein powder has 55.6 g of protein per 100 g. A typical 1 scoop serving (45 g) provides 25 g.
Yes. Soy protein powder is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
A 1 scoop serving of soy protein powder contains 25 g of protein, about 50% of the 50 g reference Daily Value.
Soy protein powder is an excellent source of protein, and about 57% of its calories come from protein, which makes it very protein-dense. Set against egg white protein powder, another protein supplement entry in the database, a serving carries about 2.3 g more protein (egg white protein powder has 22.7 g per 1 oz).
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