Every figure is per 25 g of protein, computed from each product's own panel: protein per serving, times servings per container, against the price. Scoops in this category are not the same size, so a price per scoop or per tub compares nothing.
5 of these 40 products are certified at the exact package sold. The rest are not marked as failing anything. A listing at another package, a listing from a program that names no package, or no listing at all is not a finding against a product. Which of those each one is: which whey protein brands are third party tested.
It also says nothing about protein quality, digestion or taste. It is the price of a fixed amount of protein, and nothing more. Where a brand sells an unflavored version we price that one, because flavoring changes both the price and the protein per scoop. Plant protein is priced on the same basis, and the two are set side by side on plant protein vs whey.
Products that are out of stock today carry no price and drop out of this ranking; they are still listed on the whey protein page with their label read.
Where to buy: the whey protein shortlist
The pick is the cheapest certified product, at the exact package sold where the certifier names packages, with no adverse finding on record, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving; per delivered dose where the retailer publishes a delivery rate. Where none does, it is the cheapest such product before delivery, and it says how far the order is from free delivery. It is the same pick the category page shows. Any answer shown beside it is the cheapest under a different rule and says so on its own line; answers that cost more than the pick fold under one line until you ask for them.
Our pick, delivery included · Cheapest independently tested, delivery known
Among 44 products and 44 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
What this rests on: prices we last recorded at the retailer named on each product page, which go stale, and each page says when it was checked; the products we track, not every product sold, and Amazon and Walmart are not among the stores; listings and labels read at the source, each linked from the page. Found an error? Tell us. The full method: How we compare.