Beef Sirloin Steak (lean)
29.0gprotein / 100g183 cal · 6.9g fat · $$$ · Quality 0.92
Soybeans (mature, cooked)
18.2gprotein / 100g173 cal · 9.0g fat · $ · Quality 0.85
This isn't close. Beef Sirloin Steak (lean) packs 29.0g of protein per 100g against Soybeans (mature, cooked)'s 18.2g — a 10.8g gap driven mostly by how concentrated or diluted each food naturally is.
On protein quality specifically, Beef Sirloin Steak (lean) scores higher — high-DIAAS complete animal protein — compared to Soybeans (mature, cooked), which is DIAAS-adjusted, complete plant protein.
Soybeans (mature, cooked) is the more budget-friendly pick ($ vs $$$ for Beef Sirloin Steak (lean)), worth weighing if cost matters more than the other differences here.
If you're eating plant-based, this comparison is moot — Soybeans (mature, cooked) fits, Beef Sirloin Steak (lean) doesn't.
Beef Sirloin Steak (lean)'s typical serving also delivers more leucine (2350mg vs Soybeans (mature, cooked)'s 1400mg) — 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 Soybeans (mature, cooked) if you need it to be plant-based, choose Beef Sirloin Steak (lean) otherwise — the protein numbers are close enough that diet compatibility should lead.
Full nutrition comparison
| Per 100g | Beef Sirloin Steak (lean) | Soybeans (mature, cooked) |
|---|---|---|
| Protein | 29.0g | 18.2g |
| Calories | 183 | 173 |
| Fat | 6.9g | 9.0g |
| Carbs | 0.0g | 8.4g |
| Fiber | 0.0g | 6.0g |
| Quality score | 0.92 | 0.85 |
| Relative cost | $$$ | $ |
| Prep time | 15 min | 90 min |
Frequently asked
Which has more protein, beef sirloin steak (lean) or soybeans (mature, cooked)?
Beef Sirloin Steak (lean) has 29.0g 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 183.