A typical serving of soy milk (1 cup, 243 g) has about 80 calories. Per 100 g: 33 kcal, 2.9 g protein, 1.7 g carbs, 1.6 g fat. The same 100 g carries 0.5 g of fiber and 0.4 g of sugar. The energy comes from a mix of carbs, fat, and protein.
| Serving | Weight | Calories |
|---|---|---|
| 1 cup | 243 g | 80 kcal |
| 100 g | 100 g | 33 kcal |
The plant milk closest to dairy in protein, at about half the calories of whole milk. On the energy-density scale, 33 kcal per 100 g puts soy milk at the very low end. Protein density is strong: about 8.8 g of protein per 100 calories.
A typical serving (1 cup, 243 g) has about 80 calories, and 100 g has 33 kcal. Calories scale with weight, so double the portion means double the number.
There are 2.9 g of protein in 100 g of soy milk, which works out to about 7 g per serving (1 cup). Treat it as an energy source rather than a protein source.
There are 1.7 g of carbohydrate per 100 g of soy milk, or about 4 g in 1 cup (243 g).
Every value on this page comes from USDA FoodData Central, entry 175215 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 175215 (SR Legacy). Serving calories are computed from the per-100-g values.
