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Protein head-to-heads · July 2026

Tilapia (raw) vs Whey protein (1 scoop): which protein is cheaper?

USDA macros joined to current US grocery prices, reduced to the two numbers that decide it: dollars per gram of protein, and protein per calorie.

Whey protein (1 scoop) is 1.5x cheaper per gram of protein ($0.031/g vs $0.048/g), while Tilapia (raw) is the leaner choice at 20.8 g protein per 100 kcal against 20.0 g. Budget favours one, a calorie cap favours the other.

Food$/g protein30 g protein costsYou needkcal that come with itProtein/100 kcal
Tilapia (raw)$0.048$1.43150 g144 kcal20.8 g
Whey protein (1 scoop)$0.031$0.9438 g150 kcal20.0 g

Full macros, per serving

Food (per serving)PricekcalProteinCarbsFat
Tilapia (raw) (100 g)$0.959620 g0 g1.7 g
Whey protein (1 scoop) (30 g)$0.7512024 g3 g1.5 g

A week of protein from each

Hitting a common 100 g/day protein target from whey protein (1 scoop) alone costs $21.88 a week; from tilapia (raw) alone, $33.25. That is a gap of $11.38 every week for the same protein. In practice you mix sources: the planner computes the cheapest mix for your exact target and calorie cap, live from the same dataset.

Budget says one, calories say the other

Whey protein (1 scoop) costs $0.031 per gram of protein against $0.048, so it saves $11.38 a week at a 100 g/day target. Tilapia (raw) answers a different question: 20.8 g of protein per 100 kcal against 20.0 g, which is what matters once calories, not dollars, are the thing you run out of first.

One of these is a convenience purchase

Tilapia (raw) ranks #21 of 25 on cost per gram of protein, near the bottom. It is not a bad food, it is an expensive way to buy protein: $1.43 per 30 g against $0.94 for whey protein (1 scoop). If it is in your basket for the protein, swap it. If it is there because it travels well or you enjoy it, that is a different and perfectly good reason.

Compare against other foods

Frequently asked

Which is cheaper for protein, tilapia (raw) or whey protein (1 scoop)?
Whey protein (1 scoop), at $0.031 per gram of protein against $0.048 for tilapia (raw) (July 2026 US grocery prices). A 30 g protein serving costs $0.94 vs $1.43.
Which has more protein per calorie, tilapia (raw) or whey protein (1 scoop)?
Tilapia (raw), with 20.8 g protein per 100 kcal against 20.0 g for whey protein (1 scoop), 1.0x leaner. That matters when you are cutting and calories are the binding constraint.
Which should I buy, tilapia (raw) or whey protein (1 scoop)?
Depends on your constraint. On a tight budget with room in your calories, whey protein (1 scoop) is cheaper per gram of protein. On a calorie-capped cut, tilapia (raw) gives you 1.0x more protein per calorie and is usually worth its $0.048/g price.

Prices are representative US grocery prices as of July 2026; your store will differ. Educational content, not medical or dietary advice. Dataset: free download, CC-BY.