PROTEIN INDEX

38 products. 17 brands. One honest number.

Stop paying for flavour.
Start paying for protein.

We rank every protein powder sold in the UK by what 30g of actual protein costs you, not by what the tub costs. Same scoop, same measure, every brand, every week.

£0.54

Cheapest per 30g protein

Bulk Soya Protein Isolate 90

6.1x

Cheapest to dearest spread

Same 30g of protein

38

Products tracked

Updated weekly

See the index

The Index

Every tub, one measure

Filter, sort and compare the whole UK market on cost per 30g of real protein. Everything updates instantly as you type.

38 products shown

#3

Bulk Basic Whey

Whey concentrate

Cost per 30g protein

£0.77
Protein /100g
59.0g
Per serving
18g
Price per kg
£15.19
Price
£18.99£24.99Promo
Buy at Bulk
#26

Huel Powder v3.1

Meal replacement

Cost per 30g protein

£1.76
Protein /100g
30.0g
Per serving
30g
Price per kg
£17.65
Price
£30.00
Buy at Huel

Browse by category

Each category has its own ranking, built on the same measure, cost per 30g of real protein.

Whey concentrate5Whey isolate4Clear whey2Clear vegan2Diet whey1Casein2Vegan8Blends8Mass gainer2Meal replacement2RTD2

How we rank

One formula. No favours.

Every product in the index is measured the same way, so the ranking cannot be bought and cannot be gamed by pack size.

The calculation

(Pack price ÷ grams of protein in pack) × 30

Grams of protein in the pack = pack weight × protein per 100g. The result is what 30g of real protein costs you from that tub.

Prices are snapshots

We record the listed UK price at a point in time. All 38 products were last checked on 16 September 2026. Promotional and multi-buy prices are flagged as indicative in amber, because they will not be there forever.

Commission changes nothing

Some links earn us a commission. It does not affect position, score or inclusion. The ranking is generated from the numbers alone, and we publish the formula above so you can check our work.

We compare like for like

Cost per 30g of protein normalises pack size, serving size and protein density, so a 310g tub and a 1.53kg bag can be judged on the same axis.