Whey Protein Isolate (WPI)
90.0gprotein / 100g370 cal · 1.0g fat · $$$ · Quality 1.0
Brown Rice Protein
78.0gprotein / 100g380 cal · 3.0g fat · $$ · Quality 0.6
This isn't close. Whey Protein Isolate (WPI) packs 90.0g of protein per 100g against Brown Rice Protein's 78.0g — a 12.0g gap driven mostly by how concentrated or diluted each food naturally is.
On protein quality specifically, Whey Protein Isolate (WPI) scores higher — highest DIAAS of any common protein source — compared to Brown Rice Protein, which is lit_estimate, low in lysine, typically blended with pea protein commercially.
Brown Rice Protein is the more budget-friendly pick ($$ vs $$$ for Whey Protein Isolate (WPI)), worth weighing if cost matters more than the other differences here.
If you're eating plant-based, this comparison is moot — Brown Rice Protein fits, Whey Protein Isolate (WPI) doesn't.
Whey Protein Isolate (WPI)'s typical serving also delivers more leucine (2700mg vs Brown Rice Protein's 1750mg) — relevant if the goal is maximizing the muscle-protein-synthesis trigger per meal, not just total grams.
The real deciding factor is dietary fit, not macros: choose Brown Rice Protein if you need it to be plant-based, choose Whey Protein Isolate (WPI) otherwise — the protein numbers are close enough that diet compatibility should lead.
Full nutrition comparison
| Per 100g | Whey Protein Isolate (WPI) | Brown Rice Protein |
|---|---|---|
| Protein | 90.0g | 78.0g |
| Calories | 370 | 380 |
| Fat | 1.0g | 3.0g |
| Carbs | 1.5g | 8.0g |
| Fiber | 0.0g | 2.0g |
| Quality score | 1.0 | 0.6 |
| Relative cost | $$$ | $$ |
| Prep time | 1 min | 1 min |
Frequently asked
Which has more protein, whey protein isolate (wpi) or brown rice protein?
Whey Protein Isolate (WPI) has 90.0g of protein per 100g compared to Brown Rice Protein's 78.0g.
Which is lower in calories?
Whey Protein Isolate (WPI) is lower in calories per 100g, at 370 vs the other's 380.