| Measure | Soy protein isolate | Soy protein powder |
|---|---|---|
| Typical serving | 1 oz (28 g) | 1 scoop (45 g) |
| Protein per serving | 24.7 g | 25 g |
| Protein per 100 g | 88.3 g | 55.6 g |
| Calories per serving | 94 kcal | 175 kcal |
| Protein density | 105% of calories | 57% of calories |
| Share of 50 g Daily Value | 49% | 50% |
| Protein quality | Complete | Complete |
| Category | Protein supplements | Protein supplements |
Compare foods · Soy protein isolate · Soy protein powder
Protein comparison
Soy protein isolate vs Soy protein powder: which has more protein?
Soy protein isolate gives you 24.7 g of protein per 1 oz; soy protein powder gives you 25 g per 1 scoop. On equal weight it is 88.3 g against 55.6 g per 100 g. The full side-by-side, from the same USDA-sourced records as the rest of the site:
The verdict
Soy protein isolate has more protein on equal weight: 88.3 g per 100 g against soy protein powder's 55.6 g, a lead of 32.7 g. Per typical serving they are also nearly even: 24.7 g per 1 oz of soy protein isolate against 25 g per 1 scoop of soy protein powder.
For the full breakdown of each food, see the protein in soy protein isolate and protein in soy protein powder pages, each with its USDA FoodData Central record id.
Quick answers
Soy protein isolate vs Soy protein powder FAQ
Which has more protein, soy protein isolate or soy protein powder?
Soy protein isolate has more protein per 100 g: 88.3 g against 55.6 g. Per typical serving, soy protein isolate provides 24.7 g (1 oz) and soy protein powder provides 25 g (1 scoop).
Is soy protein isolate or soy protein powder more protein-dense?
Soy protein isolate is the more protein-dense of the two: about 105% of its calories come from protein, against 57% for soy protein powder.
Are soy protein isolate and soy protein powder complete proteins?
Yes, both. Soy protein isolate and soy protein powder 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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