Protein for Muscle Growth: 1.6-2.2 g per kg | Quick-Reference Table and Practical Tips
The evidence-based target for muscle growth is 1.6-2.2 g of protein per kg of bodyweight per day. Meta-analyses show that eating more than this does not produce additional muscle gains.
More is not always better. What matters is hitting an adequate amount, consistently, spread across multiple meals.
The research behind 1.6-2.2 g/kg
Meta-analyses on protein intake and muscle growth consistently show that muscle growth plateaus at roughly 1.6 g per kg of bodyweight, with diminishing returns beyond that. The upper end of 2.2 g/kg accounts for a safety margin and conditions like an active cut. For most people, 1.6-2.2 g/kg is the range where you get all the benefit without wasted cost or digestive load. Pushing to 3 or 4 g/kg does not accelerate muscle growth - it just adds expense.
Daily protein targets by bodyweight
| Bodyweight | 1.6 g/kg | 2.0 g/kg | 2.2 g/kg |
|---|---|---|---|
| 50 kg | 80 g | 100 g | 110 g |
| 60 kg | 96 g | 120 g | 132 g |
| 70 kg | 112 g | 140 g | 154 g |
| 80 kg | 128 g | 160 g | 176 g |
| 90 kg | 144 g | 180 g | 198 g |
During a lean bulk, aim for 1.6-2.0 g/kg. While cutting, push toward 2.0-2.2 g/kg to protect muscle mass.
How much protein per meal, and how to spread it out
To maximize muscle protein synthesis per meal, aim for 20-40 g per sitting (roughly 0.4 g per kg of bodyweight). Rather than trying to hit your daily total in one or two meals, spread it across 3-4 meals to trigger the anabolic response multiple times throughout the day. For a 70 kg person, that looks like 30-40 g of protein four times a day.
High-protein food reference list
| Food | Amount | Protein |
|---|---|---|
| Chicken breast (skinless) | 100 g | ~23 g |
| Egg | 1 large | ~6 g |
| Greek yogurt | 100 g | ~10 g |
| Salmon | 100 g | ~22 g |
| Firm tofu | 150 g | ~10 g |
| Protein powder | 1 scoop | ~20-25 g |
On days when whole foods alone won't get you there, protein powder is a convenient and practical top-up (supplement priority guide).
FAQ
- Does more protein mean more muscle?
- No. Muscle growth plateaus at around 1.6 g per kg of bodyweight per day. Eating beyond 2.2 g/kg adds no additional muscle - the surplus is simply used for energy. Focus on hitting the target consistently rather than overshooting it.
- Is there a limit to how much protein one meal can use?
- For maximal muscle protein synthesis, 20-40 g per meal is the practical target. More than that in a single sitting isn't wasted, but the additional muscle-building benefit is small - spreading intake across multiple meals is more efficient.
- Is protein powder necessary?
- Not if you can hit your daily target through whole foods. That said, it's a fast and convenient source of high-quality protein, making it very practical on busy days or for anyone who struggles to eat enough.
Key takeaways
- Target 1.6-2.2 g of protein per kg of bodyweight per day for muscle growth
- Growth plateaus at ~1.6 g/kg; eating far more than 2.2 g/kg adds no benefit
- Aim for 20-40 g per meal, spread across 3-4 meals per day
- Protein powder is a practical top-up when whole foods fall short