Protein per dollar · #4 of 58
Casein protein: about 44 g protein per $1
At the US average price for September 2026 (adjusted), $1 of casein protein buys about 44 g of protein, and 30 g of protein costs about $0.69.
Sources
Protein: USDA FoodData Central, Median of 8 US product labels (FDC Branded Foods 2026-10-29) (a brand-free median of US product labels in FoodData Central Branded Foods): 79.17 g protein and 380 kcal per 100 g.
Price: USDA ERS PP-NAP 2017-18: Nutritional powder mix, protein, light, NFS$1.3494/100 g same form; x CPI-U CUUR0000SAF115 282.638/210.042 = 1.3456 (2026-09 vs 2017-18 average). Nutritional powder mix, protein, NFS (protein powder) Series ERS PP-NAP 2017-18 FNDDS 95230020, as of 2026-09.
Estimates. Sales, store brands and waste are not included.
Dishes that use casein protein
Sorted by how much goes into each serving.
Questions
How much protein per dollar is casein protein?
About 44 g of protein per $1 at the US average price of $1.82 per 100 g (US avg 2017–18, adjusted). That ranks 4 of 58 grocery proteins we track.
How much does 30 g of protein from casein protein cost?
About $0.69 at US average prices for September 2026. Your store will differ.