Head-to-head comparison

Pea Protein Isolate vs Soybeans (mature, cooked): Which Has More Protein?

Pea Protein Isolate and Soybeans (mature, cooked) show up in a lot of the same meal-planning conversations, and the honest comparison depends on which specific number you're optimizing for.

Pea Protein Isolate

80.0gprotein / 100g

375 cal · 6.0g fat · $$ · Quality 0.82

Soybeans (mature, cooked)

18.2gprotein / 100g

173 cal · 9.0g fat · $ · Quality 0.85

This isn't close. Pea Protein Isolate packs 80.0g of protein per 100g against Soybeans (mature, cooked)'s 18.2g — a 61.8g gap driven mostly by how concentrated or diluted each food naturally is.

Neither has a meaningful edge on protein quality; they're close enough on amino acid profile that it isn't a differentiator here.

Soybeans (mature, cooked) is the more budget-friendly pick ($ vs $$ for Pea Protein Isolate), worth weighing if cost matters more than the other differences here.

Pea Protein Isolate's typical serving also delivers more leucine (2100mg vs Soybeans (mature, cooked)'s 1400mg) — relevant if the goal is maximizing the muscle-protein-synthesis trigger per meal, not just total grams.

Verdict

If raw protein density is what you're optimizing for, Pea Protein Isolate wins clearly. Choose Soybeans (mature, cooked) instead if its lower fat, cost, or prep time matters more to you than the extra grams.

Full nutrition comparison

Per 100gPea Protein IsolateSoybeans (mature, cooked)
Protein80.0g18.2g
Calories375173
Fat6.0g9.0g
Carbs5.0g8.4g
Fiber4.0g6.0g
Quality score0.820.85
Relative cost$$$
Prep time1 min90 min

Frequently asked

Which has more protein, pea protein isolate or soybeans (mature, cooked)?

Pea Protein Isolate has 80.0g of protein per 100g compared to Soybeans (mature, cooked)'s 18.2g.

Which is lower in calories?

Soybeans (mature, cooked) is lower in calories per 100g, at 173 vs the other's 375.