Whey Protein Isolate (WPI)
90.0gprotein / 100g370 cal · 1.0g fat · $$$ · Quality 1.0
Whey Protein Concentrate (WPC)
78.0gprotein / 100g390 cal · 6.0g fat · $ · Quality 1.0
Whey Protein Isolate (WPI) is in a different weight class here, protein-wise: 90.0g per 100g vs Whey Protein Concentrate (WPC)'s 78.0g, a 12.0g difference that's more about food category than food quality.
Protein quality is essentially matched between the two — both land in a similar tier for amino acid completeness.
On price, Whey Protein Concentrate (WPC) wins clearly — $ against Whey Protein Isolate (WPI)'s $$$.
Whey Protein Isolate (WPI)'s typical serving also delivers more leucine (2700mg vs Whey Protein Concentrate (WPC)'s 2500mg) — relevant if the goal is maximizing the muscle-protein-synthesis trigger per meal, not just total grams.
If raw protein density is what you're optimizing for, Whey Protein Isolate (WPI) wins clearly. Choose Whey Protein Concentrate (WPC) instead if its lower fat, cost, or prep time matters more to you than the extra grams.
Full nutrition comparison
| Per 100g | Whey Protein Isolate (WPI) | Whey Protein Concentrate (WPC) |
|---|---|---|
| Protein | 90.0g | 78.0g |
| Calories | 370 | 390 |
| Fat | 1.0g | 6.0g |
| Carbs | 1.5g | 8.0g |
| Fiber | 0.0g | 0.0g |
| Quality score | 1.0 | 1.0 |
| Relative cost | $$$ | $ |
| Prep time | 1 min | 1 min |
Frequently asked
Which has more protein, whey protein isolate (wpi) or whey protein concentrate (wpc)?
Whey Protein Isolate (WPI) has 90.0g of protein per 100g compared to Whey Protein Concentrate (WPC)'s 78.0g.
Which is lower in calories?
Whey Protein Isolate (WPI) is lower in calories per 100g, at 370 vs the other's 390.