Which is cheaper for protein, egg whites (liquid) or whey protein (1 scoop)?

Whey protein (1 scoop), at $0.031 per gram of protein against $0.046 for egg whites (liquid) (July 2026 US grocery prices). A 30 g protein serving costs $0.94 vs $1.38.

Which has more protein per calorie, egg whites (liquid) or whey protein (1 scoop)?

Egg whites (liquid), with 21.0 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, egg whites (liquid) 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, egg whites (liquid) gives you 1.0x more protein per calorie and is usually worth its $0.046/g price.

Protein head-to-heads · July 2026

Egg whites (liquid) 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 $0.046/g), while Egg whites (liquid) is the leaner choice at 21.0 g protein per 100 kcal against 20.0 g. Budget favours one, a calorie cap favours the other.

Food	$/g protein	30 g protein costs	You need	kcal that come with it	Protein/100 kcal
Egg whites (liquid)	$0.046	$1.38	275 g	143 kcal	21.0 g
Whey protein (1 scoop)	$0.031	$0.94	38 g	150 kcal	20.0 g

Full macros, per serving

Food (per serving)	Price	kcal	Protein	Carbs	Fat
Egg whites (liquid) (100 g)	$0.50	52	10.9 g	0.7 g	0.2 g
Whey protein (1 scoop) (30 g)	$0.75	120	24 g	3 g	1.5 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 egg whites (liquid) alone, $32.11. That is a gap of $10.24 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 $0.046, so it saves $10.24 a week at a 100 g/day target. Egg whites (liquid) answers a different question: 21.0 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

Egg whites (liquid) ranks #20 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: $1.38 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, egg whites (liquid) or whey protein (1 scoop)?: Whey protein (1 scoop), at $0.031 per gram of protein against $0.046 for egg whites (liquid) (July 2026 US grocery prices). A 30 g protein serving costs $0.94 vs $1.38.
Which has more protein per calorie, egg whites (liquid) or whey protein (1 scoop)?: Egg whites (liquid), with 21.0 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, egg whites (liquid) 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, egg whites (liquid) gives you 1.0x more protein per calorie and is usually worth its $0.046/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.