How does SupplementMath calculate price per 100g of protein?

We divide the total price by the grams of protein in the entire container, then multiply by 100. This normalizes pricing across different container sizes and protein concentrations, showing you the true cost of protein regardless of marketing claims about serving sizes.

Our rankings are based solely on calculated metrics—we do not accept payment for placement.

Calories per 100g protein measures caloric efficiency for fat loss and cutting.

How does SupplementMath calculate price per 100g of protein?

We divide the total price by the grams of protein in the entire container, then multiply by 100. This normalizes pricing across different container sizes and protein concentrations, showing you the true cost of protein regardless of marketing claims about serving sizes.

Why use calories per 100g of protein as a metric?

Calories per 100g protein measures caloric efficiency. Lower values indicate more protein per calorie, which is ideal for fat loss and cutting. Protein powders range from ~350 to ~500 calories per 100g of protein depending on their fat and carbohydrate content.

How do you evaluate protein source quality?

We categorize proteins by type (whey isolate, concentrate, casein, plant sources) and provide context on absorption speed, amino acid completeness, and processing level. This helps you match protein type to your specific goals.

Where does the product data come from?

Product data is sourced from manufacturer labels and verified against Amazon product information. We track protein per serving, calories per serving, serving size, container weight, protein type, and sweetener type for each product.

How often is the data updated?

Product prices are updated regularly. Nutritional information is updated when manufacturers reformulate products. Each product page shows the last modified date for transparency.

What is the leucine threshold and why does it matter?

Research suggests that 2-3 grams of leucine per serving is required to maximally stimulate muscle protein synthesis. Whey protein naturally meets this threshold, while some plant proteins may require blending or larger servings to achieve optimal leucine content.

How SupplementMath Evaluates Protein Powders

Q: Does SupplementMath accept payment for rankings?

No. Our rankings are based solely on calculated metrics: price per 100g protein, calories per 100g protein, and nutritional data from product labels. We do not accept payment for placement or favorable positioning.

The supplement industry is built on marketing claims, confusing serving sizes, and opaque pricing. SupplementMath provides objective, mathematical comparisons based on product data.

Our Mission

We make protein powder selection mathematical and objective. Our rankings are based solely on calculated metrics: price per 100g protein, calories per 100g protein, and nutritional data from product labels. We do not accept payment for placement or favorable positioning.

We make protein powder selection mathematical and objective. By normalizing all products to common metrics, we enable comparisons that reveal the value of each protein powder—regardless of brand reputation, marketing budget, or serving size.

Core Metrics

1. Price per 100g of Protein

This is our primary value metric. It answers a simple question: How much are you paying for actual protein?

The calculation:
(Container Price ÷ Total Protein Grams in Container) × 100

Why this matters: Brands often manipulate serving sizes to make their product appear cheaper. One brand might claim 30g servings while another uses 25g servings. By normalizing to 100g of protein, we see the true cost regardless of serving size games.

Typical range: $4 to $15 per 100g of protein, with whey concentrate typically at the lower end and specialized isolates at the higher end.

2. Calories per 100g of Protein

This metric measures caloric efficiency. It answers: How many calories do you consume to get 100g of protein?

The calculation:
(Calories Per Serving ÷ Protein Per Serving) × 100

Why this matters: When cutting or dieting, you want maximum protein with minimal calories. Pure protein is 4 calories per gram, so the theoretical minimum is 400 calories per 100g. Products with higher ratios contain more fat or carbohydrates, which may or may not align with your goals.

Typical range: 350 to 500 calories per 100g of protein. Lower values indicate leaner proteins (ideal for fat loss), while higher values include more calories from other macronutrients.

Protein Source Quality

We categorize every protein by source and provide context on:

Absorption speed: Fast (30-60 min) vs slow (3-8 hours) digestion
Protein percentage: Isolate (90%+) vs concentrate (70-80%) vs hydrolysate (95%+)
Amino acid completeness: Whether the protein provides all essential amino acids
Leucine content: The threshold for maximal muscle protein synthesis (~2.5g per serving)

Sweetener Categorization

We track sweetener types to help you choose based on health preferences and tolerance:

Artificial: Sucralose, acesulfame potassium, aspartame
Natural: Stevia, monk fruit, cane sugar, coconut sugar
None: Unsweetened options

Each sweetener type includes information about glycemic impact and potential health considerations based on current research.

Data Sources

All product data is sourced from:

Manufacturer product labels
Amazon product listings (verified against labels)
Brand websites for specification confirmations

We track: protein per serving, calories per serving, serving size, container weight, protein type(s), sweetener type(s), and price by market.

What We Don't Do

No paid placements: Rankings are determined by calculated metrics only
No taste testing: Taste is subjective and can't be mathematically compared
No mixability scoring: This varies by individual preparation method

Scientific References

Our methodology is informed by research from:

Transparency

Every calculation on this site is reproducible. Given the price, serving size, protein per serving, and calories per serving of any protein powder, you can verify our metrics yourself. We believe transparency builds trust—and that trust is essential when making decisions about what you put in your body.