Current Protein Powder Price Index

A current-market snapshot calculated from 560 complete comparisons out of 2,006 listings. Updated Sep 18, 2026, 8:27 PM UTC.

Market	Comparable	Lowest / 25g	Median / 25g	Middle 50%
All protein powders	560	$0.54	$2.04	$1.70–$2.60
Whey Protein	277	$0.96	$2.07	$1.79–$2.50
Plant-Based Protein	131	$0.54	$2.31	$1.79–$2.96
Protein Isolate	186	$0.95	$2.08	$1.77–$2.46
Casein Protein	37	$1.06	$1.80	$1.36–$1.93
Protein Blends	40	$1.30	$1.96	$1.82–$2.62

How to read this index

Cost per 25g normalizes products to the same amount of labeled protein. The middle 50% runs from the first to third quartile, which is a more useful “typical range” than the cheapest listing alone.

This is not price history. It is rebuilt from the current feed and does not include shipping, tax, coupons, or subscription discounts. See the methodology for inclusion and correction rules.