Food and meal comparison

Soy protein vs Supplement, protein powder whey based

Written by NutriDecide Editorial Team Last updated: 2026-07-02

Compare nutritional values, benefits and context to choose the best option for your goal.

Use the tables to compare real options for your goal — values are per 100 g unless stated otherwise on the label.

Type: Food and meal comparison Focus: Nutrition Goal: Health & performance
🍽️

Food

Soy protein

Calories402,0 kcal
Protein80,5 g
Carbs1,8 g
Fat5,0 g
VS
🍽️

Food

Supplement, protein powder whey based

Calories339,0 kcal
Protein78,1 g
Carbs3,2 g
Fat1,6 g
Food
Soy protein
🥩🥗🐟🥦
VS
Decide better
Food
Supplement, protein powder whey based
🍗🍠🧀🥑
Protein80,5 g / 78,1 g
Calories402,0 kcal / 339,0 kcal
Carbs1,8 g / 3,2 g

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Page summary

🍽️

Total foods

2

items analyzed

Best choice

Soy protein

💪

Average protein

79,3 g

per 100g

🌿

Average carbs

2,5 g

per 100g

🔥

Average fat

3,3 g

per 100g

Quick assessment

Our analysis

For most practical purposes, soy protein offers higher protein content with fewer carbs and calories, making it ideal for clean, high-protein diets. Whey-based supplements, however, provide slightly less protein but come with a more nutrient-dense profile, including added minerals and vitamins.

👍 Positive points

  • ✅ Soy protein leads on protein (80.5g vs 78.1g per 100 g).
  • ✅ Supplement, protein powder whey based is lighter in calories (339 kcal vs 402 kcal per 100 g).
  • ✅ Soy protein has fewer carbs (1.76g vs 3.22g per 100 g).

⚠️ Points to watch

  • ⚠️ Soy protein packs more calories (402 kcal per 100 g) — watch portions.
  • ⚠️ Values are per 100 g; real portions change calories and macros.
  • ⚠️ Pair the food comparison angle with your goal and daily routine.

Full analysis

The practical answer

For most practical purposes, soy Protein offers higher Protein content with fewer Carbs and Calories, making it ideal for clean, high-Protein diets. Whey-based supplements, however, provide slightly less Protein but come with a more nutrient-dense profile, including added minerals and vitamins.

Key differences

When comparing soy Protein and whey-based Protein powders, the standout differences are:

  • Protein content: Soy Protein boasts 80.5g per 100g, slightly surpassing whey’s 78.1g.
  • Calories: Soy is higher at 402 kcal vs. 339 kcal for whey.
  • Carbohydrates: Soy has just 1.76g, while whey contains 3.22g.
  • Fats: Soy has more Fat (4.98g) compared to whey’s 1.56g.
  • Additional nutrients: Whey powder supplies more minerals like calcium, magnesium, and zinc; soy offers a slightly lower nutrient density but is very low in Carbs.

Pros and cons of each option

Soy Protein

  • Pros: Higher Protein per 100g, very low in Carbs, suited for keto and low-carb diets, plant-based, potential for fewer allergens.
  • Cons: Slightly higher calorie content, lower in minerals, and may contain phytoestrogens which some individuals prefer to avoid.

Whey-based supplement

  • Pros: Slightly more nutrient-dense with minerals like calcium, magnesium, and zinc, and lower in Calories, making it suitable for calorie-conscious diets.
  • Cons: Slightly less Protein, higher Carbs, and animal-based, which may be unsuitable for vegans or those with dairy sensitivities.

Best choice for different goals

If your primary goal is maximizing Protein intake while minimizing Carbs and Calories, soy Protein is the clear winner. For those seeking additional minerals or who prefer dairy-based options, whey-based powders are more appropriate, especially if calorie intake needs to be controlled.

When one option is NOT worth it

Choosing soy Protein isn't worth it if you require rapid, highly bioavailable Protein post-workout—whey Protein is typically absorbed faster and may be more effective for muscle recovery. Conversely, whey isn't ideal for vegans or individuals with dairy allergies, where soy offers a plant-based alternative.

Final recommendation

Based on the data, soy Protein is general nutritionly better for high-Protein, low-carb diets, and those looking for a plant-based option. However, if you're after mineral enrichment with slightly lower Calories and Carbs, whey-based supplements serve well. Ultimately, choose based on your dietary preferences, nutritional needs, and any allergies or sensitivities.

Nutrition indicators

🍽️

Food

Soy protein

Nutrient density 0,8
Protein ratio 0,2
Low Carb Yes
High Protein Yes
Keto No
🍽️

Food

Supplement, protein powder whey based

Nutrient density 0,9
Protein ratio 0,2
Low Carb Yes
High Protein Yes
Keto No

How to interpret this page

🔥 Calories: Calories show energy per 100 g and help you compare portion impact across foods. Use them with protein and carbs to see whether an option fits maintenance, deficit, or surplus goals. A low score does not mean a food is ‘bad’ — it reflects nutrient density for general health, not your specific plan.

💪 Protein: Protein per 100 g shows how concentrated a food is as a protein source. Higher values support muscle recovery, satiety, and meal balance when that is your priority. Compare foods on this page rather than judging a single macro in isolation.

🌾 Carbs: Carbs matter most in context: training days, ketogenic diets, and endurance goals change what ‘good’ looks like. Powders such as maltodextrin score lower on our general-health scale because they are energy-dense with little protein, fiber, or micronutrients — not because they are never useful.

🥑 Fat: Fat carries more than twice the calories per gram than protein or carbs, so small portion changes matter. Moderate fat levels can support hormones and absorption of fat-soluble vitamins. Use this column with calories when balancing satiety and energy density.

Tip: combine the table with your goal — weight loss, muscle gain, low carb, endurance, or general health. The score helps compare options on this page; it does not replace medical or sports-nutrition advice.

Nutrition facts (per 100g)

The data shown is filtered to match this page’s topic.

The NutriDecide score (1–10) ranks foods on this page by protein, nutrient density, fiber, and a general-health lens — not by taste or whether they fit a specific diet. Low scores (e.g. maltodextrin) usually mean fewer nutrients per calorie; high scores (e.g. soy protein isolate) mean stronger protein and micronutrient density. It is a comparison tool: a low score does not forbid a food when it matches your goal.

FoodCaloriesProteinCarbsFatFiberScore
🍽️

Soy protein

402,080,51,85,05,6 10/10
🍽️

Supplement, protein powder whey based

339,078,13,21,63,1 10/10

Vitamins and minerals

🍽️

Food

Soy protein

Minerals

Calcium
Iron
Magnesium
Phosphorus
Potassium
Sodium
Zinc

Vitamins

Vitamin A
Vitamin C
Vitamin D
Vitamin E
Vitamin K
Vitamin B1
Vitamin B2
Vitamin B3
Vitamin B5
Vitamin B6
Vitamin B12
🍽️

Food

Supplement, protein powder whey based

Minerals

Calcium 469,0
Iron 1,1
Magnesium 195,0
Phosphorus 1321,0
Potassium 500,0
Sodium 156,0
Zinc 6,2

Vitamins

Vitamin A 0,0
Vitamin C 0,0
Vitamin D 0,0
Vitamin E 0,0
Vitamin K
Vitamin B1 0,6
Vitamin B2 2,0
Vitamin B3 1,1
Vitamin B5
Vitamin B6 0,6
Vitamin B12 2,5

Analysis

💪

Protein

High

🌾

Carbs

Low

🥑

Fat

Low

🔥

Calories

High

🏆

Summary

Decide better

Frequently asked questions

Which is better: Soy protein or Supplement, protein powder whey based?

For the goal of food comparison, Soy protein has the edge across the main nutrients.

Which option favors the food comparison goal?

Soy protein tends to be the choice best aligned with this page's data.

When to pick Soy protein and when to pick Supplement, protein powder whey based?

Choose Soy protein (Protein 80.5g, Calories 402 kcal, Carbs 1.76g) when maximizing protein and minimizing carbs; opt for whey (Protein 78.1g, Calories 339 kcal, Carbs 3.22g) if mineral content and lower calories matter.

Are values per serving or per 100 g?

On this page, unless noted otherwise, main macros are per 100 g.

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