Protein per dollar · #3 of 58
Whey protein isolate: about 49 g protein per $1
At the US average price for September 2026 (adjusted), $1 of whey protein isolate buys about 49 g of protein, and 30 g of protein costs about $0.61.
Sources
Protein: USDA FoodData Central, Median of 9 US product labels (FDC Branded Foods 2026-10-29) (a brand-free median of US product labels in FoodData Central Branded Foods): 89.29 g protein and 390 kcal per 100 g.
Price: USDA ERS PP-NAP 2017-18: Nutritional powder mix, whey based, 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, whey based (protein powder) Series ERS PP-NAP 2017-18 FNDDS 95230000, as of 2026-09.
Estimates. Sales, store brands and waste are not included.
Dishes that use whey protein isolate
Sorted by how much goes into each serving.
Questions
How much protein per dollar is whey protein isolate?
About 49 g of protein per $1 at the US average price of $1.82 per 100 g (US avg 2017–18, adjusted). That ranks 3 of 58 grocery proteins we track.
How much does 30 g of protein from whey protein isolate cost?
About $0.61 at US average prices for September 2026. Your store will differ.