Whey Protein Isolate (WPI)
90.0gprotein / 100g370 cal · 1.0g fat · $$$ · Quality 1.0
Greek Yogurt (plain, nonfat)
10.2gprotein / 100g59 cal · 0.4g fat · $ · Quality 0.95
This isn't close. Whey Protein Isolate (WPI) packs 90.0g of protein per 100g against Greek Yogurt (plain, nonfat)'s 10.2g — a 79.8g gap driven mostly by how concentrated or diluted each food naturally is.
On protein quality specifically, Whey Protein Isolate (WPI) scores higher — highest DIAAS of any common protein source — compared to Greek Yogurt (plain, nonfat), which is high biological value dairy protein.
Greek Yogurt (plain, nonfat) is the more budget-friendly pick ($ vs $$$ for Whey Protein Isolate (WPI)), worth weighing if cost matters more than the other differences here.
Whey Protein Isolate (WPI)'s typical serving also delivers more leucine (2700mg vs Greek Yogurt (plain, nonfat)'s 1000mg) — 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 Greek Yogurt (plain, nonfat) 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) | Greek Yogurt (plain, nonfat) |
|---|---|---|
| Protein | 90.0g | 10.2g |
| Calories | 370 | 59 |
| Fat | 1.0g | 0.4g |
| Carbs | 1.5g | 3.6g |
| Fiber | 0.0g | 0.0g |
| Quality score | 1.0 | 0.95 |
| Relative cost | $$$ | $ |
| Prep time | 1 min | 0 min |
Frequently asked
Which has more protein, whey protein isolate (wpi) or greek yogurt (plain, nonfat)?
Whey Protein Isolate (WPI) has 90.0g of protein per 100g compared to Greek Yogurt (plain, nonfat)'s 10.2g.
Which is lower in calories?
Greek Yogurt (plain, nonfat) is lower in calories per 100g, at 59 vs the other's 370.