Compare protein concentration without ranking the whole food
Build a protein-only comparison, then calculate the amounts in two realistic chosen portions without inventing dietary targets.
Protein grams per serving combine two things: the concentration of protein and the size of the serving. To compare concentration, put both products on equal food weight. To compare what a particular meal contains, use the actual portions instead.
The EU nutrition declaration framework provides a common 100 g basis. The following calculation applies that basis to fictional records; it is not a recommendation about protein needs.
Build a protein-only table
Product A lists 12 g protein in a 60 g serving. Product B lists 15 g protein in a 100 g serving. A has 12 ÷ 60 × 100 = 20 g protein per 100 g. B has 15 g protein per 100 g.
| Product | Stated serving | Protein in that serving | Protein per 100 g |
|---|---|---|---|
| A | 60 g | 12 g | 20 g |
| B | 100 g | 15 g | 15 g |
B has the larger printed serving amount, while A has the larger calculated concentration. Both statements are accurate because they refer to different denominators.
Calculate your chosen portions separately
If a recipe uses 40 g of A, it contributes an estimated 20 × 40 ÷ 100 = 8 g protein. If another recipe uses 80 g of B, it contributes 15 × 80 ÷ 100 = 12 g. A higher concentration does not guarantee a larger amount in every possible portion.
You can also ask a purely mathematical substitution question. To match 12 g protein using A's declared concentration, the calculated quantity is 12 ÷ 20 × 100 = 60 g. This is a quantity equivalence, not advice to replace one food with another.
Keep the conclusion limited
Protein concentration does not establish protein quality, suitability for an allergy, overall nutrient balance, taste, price, or how filling a food will be. Other information would be needed for those questions. Avoid turning a sorted protein column into a general “best food” badge.
Use matching preparation states and current package information. A dry powder compared with a prepared drink needs an explicit preparation conversion first. In saved notes, retain the original serving values so anyone can trace exactly how the equal-weight numbers were produced.