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Cheapest whey protein per 25g (live Index)

Tub price lies when scoops differ. This page ranks available whey by calculated $/25g protein, then applies Index /100 so “cheap” is not just fillers.

Winner rule: Primary sort = lowest $/25g. Call-out winner = lowest $/25g among Index ≥70.

Among Index ≥70 here, Optimum Nutrition Gold Standard Whey Vanilla Ice Cream leads at $1.07/25g (Index 93).

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Lowest $/25g among available whey listings

Product	Index/100	$/25g	Protein	Sugar	Type	Clean
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Extreme Milk Chocolate, 1 Extreme Milk Chocolate	62	$1.05	24g	2.0g	concentrate	1/6 clean
Optimum Nutrition Gold Standard Whey Vanilla Ice Cream	93	$1.07	24g	1.0g	concentrate	6/6 clean
Animal Whey Isolate Protein Powder	93	$1.09	25g	2.0g	isolate	6/6 clean
Optimum Nutrition 100% Whey Gold Standard, Double Rich Chocolate, 5 Pound Double Rich Chocolate	73	$1.10	24g	1.4g	concentrate	2/6 clean
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Extreme Milk Chocolate, 5 Extreme Milk Chocolate	61	$1.17	24g	2.0g	concentrate	1/6 clean
MuscleTech Whey Protein Powder (Vanilla Cream French Vanilla Cream	61	$1.18	24g	2.0g	isolate	1/6 clean
Animal Whey Isolate Protein Powder	92	$1.19	25g	1.0g	isolate	6/6 clean
MusclePharm Combat 100% Whey Protein Powder, Vanilla Flavor, Fast Recovery & Vanilla	55	$1.26	24g	2.0g	isolate, concentrate	—
Animal 100% Whey Protein Powder	85	$1.27	20g	2.0g	blend	6/6 clean
Animal 100% Whey Protein Powder Cookies & Cream	60	$1.27	20g	2.0g	blend	1/6 clean
Body Fortress Super Advanced Whey Protein Powder, Chocolate Chocolate	60	$1.28	30g	3.0g	concentrate	1/6 clean
Animal Whey Isolate Protein Powder	91	$1.28	25g	2.0g	isolate	6/6 clean

FAQ

What is the cheapest whey protein per 25g right now?

It changes with Amazon prices. The table below is sorted by live cost per 25g protein among available whey listings on WheyIndex. Prefer the Index ≥70 call-out if you want value without junk scores.

Why not just buy the lowest tub price?

Serving size and protein grams vary. Cost per 25g normalizes to grams of protein. Index /100 then checks sugar and clean claims so the cheapest row is not automatically the best scoop.

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