Cheapest whey protein per 25g

US prices, compared on the same 25g protein basis.

Lowest-cost matching listing

Lowest cost per 25g: Ascent 100% Whey Vanilla Bean at $1.07 per 25g protein among the eligible listings shown below.

Ascent 100% Whey Vanilla Bean · Vanilla Bean · 1,814.4g pack · Price checked 2026-10-01.

Applies to these US listings. Check the retailer for the current price.

Prices

30 listings · Lowest cost first · USD

Cost per 25g protein from eligible US listings
Protein powderCost / 25gPack price
Ascent100% Whey Vanilla BeanVanilla Bean · 1,814.4g pack$1.0725g protein / serving$62.1158 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder Cookies & CreamCookies & Cream · 4,535.9g pack$1.2325g protein / serving$174.75142 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder Cookies & CreamCookies & Cream · 1,814.4g pack$1.2525g protein / serving$69.9056 servings
Checked 2026-10-01
Animal100% Whey Protein Powder StrawberryStrawberry · 1,814.4g pack$1.2720g protein / serving$64.9564 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder ChocolateChocolate · 4,535.9g pack$1.2725g protein / serving$169.95133.4 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder Frosted Cinnamon BunFrosted Cinnamon Bun · 1,814.4g pack$1.3025g protein / serving$72.9556 servings
Checked 2026-10-01
Optimum NutritionGold Standard 100% Whey Protein Powder Vanilla Ice CreamVanilla Ice Cream · 4,535.9g pack$1.3224g protein / serving$184.99146 servings
Checked 2026-10-01
MusclePharmMuscle Pharm Combat 100% Whey Protein PowderVanilla · 2,268g pack$1.3224g protein / serving$89.9970.9 servings
Checked 2026-10-01
Animal100% Whey Protein Powder VanillaVanilla · 1,814.4g pack$1.3520g protein / serving$64.9560 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder ChocolateChocolate · 1,814.4g pack$1.3825g protein / serving$72.9553 servings
Checked 2026-10-01
Body FortressSuper Advanced Whey Protein Powder ChocolateChocolate · 1,769g pack$1.4130g protein / serving$65.8939 servings
Checked 2026-10-01
Body FortressSuper Advanced Whey Protein Powder Chocolate Peanut ButterChocolate Peanut Butter · 807.4g pack$1.4930g protein / serving$31.9917.9 servings
Checked 2026-10-01
MuscleTechWhey Protein Powder Milk ChocolateMilk Chocolate · 1,814.4g pack$1.5930g protein / serving$75.3539.4 servings
Checked 2026-10-01
MuscleTechNitro-Tech Whey Protein Vanilla CreamVanilla Cream · 1,814.4g pack$1.6030g protein / serving$77.6140.3 servings
Checked 2026-10-01
MuscleTechNitro-Tech Whey Protein Cookies & CreamCookies & Cream · 1,814.4g pack$1.6030g protein / serving$75.9439.4 servings
Checked 2026-10-01
Optimum NutritionGold Standard 100% Whey Protein Powder Double Rich ChocolateDouble Rich Chocolate · 2,268g pack$1.6224g protein / serving$114.9974 servings
Checked 2026-10-01
Optimum NutritionGold Standard 100% Whey Protein Powder Vanilla Ice CreamVanilla Ice Cream · 2,268g pack$1.6424g protein / serving$114.9973 servings
Checked 2026-10-01
Optimum NutritionGold Standard 100% Whey Protein Powder Rocky RoadRocky Road · 2,268g pack$1.6623.99985g protein / serving$114.9972 servings
Checked 2026-10-01
Premier Protein30g High Protein Powder ChocolateChocolate · 694g pack$1.7030g protein / serving$34.6217 servings
Checked 2026-10-01
Body FortressSuper Advanced Whey Protein Powder VanillaVanilla · 789.3g pack$1.7630g protein / serving$37.9918 servings
Checked 2026-10-01
Optimum NutritionGold Standard 100% Whey Protein Powder Cookies & CreamCookies & Cream · 2,268g pack$1.7624g protein / serving$114.9968 servings
Checked 2026-10-01
Body FortressSuper Advanced Whey Protein Powder StrawberryStrawberry · 807.4g pack$1.7730g protein / serving$38.2918 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder StrawberryStrawberry · 907.2g pack$1.7825g protein / serving$49.9528 servings
Checked 2026-10-01
Ascent100% Whey Protein Powder UnflavoredUnflavored · 907.2g pack$1.8325g protein / serving$54.9930 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder VanillaVanilla · 907.2g pack$1.8525g protein / serving$49.9527 servings
Checked 2026-10-01
Premier ProteinIndulgence 30g Protein Powder Salted Caramel TruffleSalted Caramel Truffle · 694g pack$1.8930g protein / serving$38.4817 servings
Checked 2026-10-01
MuscleTechWhey Protein Powder Vanilla CreamVanilla Cream · 907.2g pack$1.8924g protein / serving$49.9927.5 servings
Checked 2026-10-01
AnimalWhey Isolate Protein Powder VanillaVanilla · 1,814.4g pack$1.9025g protein / serving$104.3455 servings
Checked 2026-10-01
Transparent LabsGrass-Fed Whey Protein Isolate Vanilla Peanut ButterVanilla Peanut Butter · 1,174.8g pack$1.9328.000560000000004g protein / serving$64.9930 servings
Checked 2026-10-01
Transparent LabsWhey Protein Isolate Chocolate Peanut ButterChocolate Peanut Butter · 1,109.9g pack$1.9328g protein / serving$64.9930 servings
Checked 2026-10-01
How we compare

Cost per 25g = pack price ÷ servings per pack × 25 ÷ protein grams per serving. For example, a $40 pack with 30 servings of 24g protein costs $1.39 per 25g protein.

Prices must have been observed within 45 days. We exclude unavailable listings, incomplete ingredient records, missing nutrition, and inconsistent serving or package weights. Taxes, shipping, subscription discounts, and checkout coupons are excluded. Serving counts may be calculated from pack weight and serving weight; displayed quantities are rounded to one decimal place, while calculations use the unrounded values. Check the retailer before buying.

Whey eligibility requires all identified protein sources to be whey. Mixed plant, casein, and collagen formulas are excluded. We show up to 30 eligible listings, keeping the cheapest pack for each brand, ingredient formula, and flavor.

Prepared from WheyIndex’s indexed product and source records. Read our scoring methodology. Rankings here use the stated metric; they do not use affiliate commission rates.

Ingredients & label sources

Ascent 100% Whey Vanilla Bean

whey protein isolate, whey protein concentrate, natural flavor, lecithin, stevia leaf extract, sodium chloride.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Cookies & Cream

protein blend (whey protein concentrate, whey protein isolate), whey protein isolate, whey protein concentrate, sugar, wheat flour, cocoa processed with alkali, canola oil, sodium chloride, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, lecithin, natural flavor, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Cookies & Cream

whey protein isolate, whey protein concentrate, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, soy lecithin, sodium chloride, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

Animal 100% Whey Protein Powder Strawberry

whey protein concentrate, whey protein isolate, lecithin, artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, natural and artificial flavor, natural flavor, sodium chloride, strawberry, acesulfame potassium, beet powder, sucralose.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Chocolate

protein blend (whey protein concentrate, whey protein isolate), whey protein isolate, whey protein concentrate, cocoa processed with alkali, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, lecithin, natural flavor, sodium chloride, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Frosted Cinnamon Bun

whey protein isolate, whey protein concentrate, natural and artificial flavor, lecithin, cellulose, xanthan gum, carrageenan, natural flavor, sodium chloride, acesulfame potassium, sucralose, papain, bromelain, cinnamon.

Label processed: 2026-09-10

Animal 100% Whey Protein Powder Vanilla

whey protein concentrate, whey protein isolate, lecithin, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, sodium chloride, acesulfame potassium, sucralose.

Label processed: 2026-09-11

Animal Whey Isolate Protein Powder Chocolate

whey protein isolate, whey protein concentrate, cocoa processed with alkali, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, lecithin, natural flavor, sodium chloride, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

Body Fortress Super Advanced Whey Protein Powder Chocolate

whey protein concentrate, whey protein isolate, cocoa processed with alkali, maltodextrin, lecithin, natural flavor, sodium chloride, cellulose gum, ascorbic acid, acesulfame potassium, sucralose, zinc oxide, vitamin d3.

Label processed: 2026-09-10

Body Fortress Super Advanced Whey Protein Powder Chocolate Peanut Butter

whey protein concentrate, whey protein isolate, maltodextrin, partially defatted peanut flour, cocoa processed with alkali, lecithin, natural and artificial flavor, sodium chloride, cellulose gum, ascorbic acid, acesulfame potassium, sucralose, zinc oxide, vitamin d3.

Label processed: 2026-09-10

MuscleTech Whey Protein Powder Milk Chocolate

whey protein concentrate, whey protein isolate, hydrolyzed whey protein, cocoa processed with alkali, soy lecithin, sunflower lecithin, sodium chloride, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, natural and artificial flavor, papain, amylase, sucralose, acesulfame potassium.

Label processed: 2026-09-10

MuscleTech Nitro-Tech Whey Protein Vanilla Cream

whey protein concentrate, whey protein isolate, hydrolyzed whey protein, maltodextrin, soy lecithin, sunflower lecithin, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, natural and artificial flavor, sodium chloride, papain, amylase, sucralose, acesulfame potassium.

Label processed: 2026-09-10

MuscleTech Nitro-Tech Whey Protein Cookies & Cream

whey protein concentrate, whey protein isolate, hydrolyzed whey protein, rice flour, sugar, tapioca starch, palm oil, cocoa processed with alkali, corn starch, sodium chloride, chocolate liquor, natural flavor, sodium bicarbonate, natural and artificial flavor, soy lecithin, sunflower lecithin, guar gum, gum arabic, xanthan gum, sucralose, papain, amylase.

Label processed: 2026-09-10

Premier Protein 30g High Protein Powder Chocolate

whey protein isolate, whey protein concentrate, soluble corn fiber, sunflower lecithin, natural and artificial flavor, acesulfame potassium, sucralose, xanthan gum, sodium chloride.

Label processed: 2026-09-10

Body Fortress Super Advanced Whey Protein Powder Vanilla

whey protein concentrate, whey protein isolate, maltodextrin, natural and artificial flavor, lecithin, sodium chloride, cellulose gum, ascorbic acid, acesulfame potassium, sucralose, zinc oxide, vitamin d3.

Label processed: 2026-09-10

Body Fortress Super Advanced Whey Protein Powder Strawberry

whey protein concentrate, whey protein isolate, maltodextrin, lecithin, natural and artificial flavor, sodium chloride, cellulose gum, ascorbic acid, beet, acesulfame potassium, citric acid, sucralose, zinc oxide, vitamin d3.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Strawberry

whey protein isolate, whey protein concentrate, artificial flavor, lecithin, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, natural and artificial flavor, sodium chloride, strawberry, beet powder, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Vanilla

whey protein isolate, whey protein concentrate, cocoa processed with alkali, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, lecithin, natural flavor, sodium chloride, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

MuscleTech Whey Protein Powder Vanilla Cream

hydrolyzed whey protein, whey protein isolate, whey protein concentrate, natural and artificial flavor, soy lecithin, sunflower lecithin, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, sodium chloride, silicon dioxide, sucralose, acesulfame potassium.

Label processed: 2026-09-10

Animal Whey Isolate Protein Powder Vanilla

whey protein isolate, whey protein concentrate, natural and artificial flavor, gum blend (carrageenan, cellulose gum, xanthan gum), cellulose gum, xanthan gum, carrageenan, lecithin, sodium chloride, acesulfame potassium, sucralose, papain, bromelain.

Label processed: 2026-09-10

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Cheapest whey protein per 25g | WheyIndex