High-protein diets are the most evidence-supported macro strategy in fitness nutrition. Higher protein improves muscle protein synthesis, defends lean mass during fat loss, raises satiety per calorie, and increases the thermic effect of food. The downside is small — modestly higher kidney workload in healthy adults, easily managed with normal hydration.
This calculator sizes daily protein based on body weight and goal, then breaks it down across meals. It also lists food sources by protein density so you can hit 150–200 g per day without monotony.
Why high-protein works
Five evidence-backed benefits of high-protein eating:
- Muscle preservation during fat loss. 1.8+ g/kg consistently preserves more lean mass in deficits.
- Satiety. Protein is the most filling macronutrient per calorie — high-protein dieters typically eat 300–500 kcal less voluntarily.
- Thermic effect of food. Your body burns 20–30% of protein calories digesting it (versus 5–10% for carbs, 0–3% for fat).
- Muscle protein synthesis. Each 30–50 g protein dose triggers a 3–4 hour synthesis spike. Multiple daily doses outperform one large meal.
- Recovery. Strength and endurance recovery improves with higher protein intake.
Protein targets by goal
Pick a target based on body composition goal and life stage:
| Goal/Stage | g/kg body weight | Example (75 kg adult) |
|---|---|---|
| Sedentary baseline | 0.8–1.0 | 60–75 g |
| General fitness | 1.4–1.6 | 105–120 g |
| Muscle gain (bulk) | 1.6–2.0 | 120–150 g |
| Fat loss (cut) | 1.8–2.4 | 135–180 g |
| Older adults (60+) | 1.2–1.6 | 90–120 g |
| Endurance athletes | 1.4–1.8 | 105–135 g |
Protein distribution across meals
Total daily protein matters most, but distribution helps too. Aim for 30–50 g per meal, three or four times daily.
| Daily target | Breakfast | Lunch | Dinner | Snack |
|---|---|---|---|---|
| 120 g | 30 g | 35 g | 40 g | 15 g |
| 150 g | 35 g | 40 g | 50 g | 25 g |
| 180 g | 40 g | 50 g | 55 g | 35 g |
| 200 g+ | 45 g | 55 g | 60 g | 40 g |
Food sources by protein density
High protein density means more protein per 100 g of food. Useful when calorie targets are tight.
- Chicken breast: 31 g per 100 g cooked
- Lean beef (95/5): 27 g per 100 g cooked
- Salmon: 25 g per 100 g cooked
- Greek yogurt (0%): 10 g per 100 g
- Cottage cheese (low-fat): 12 g per 100 g
- Eggs: 6 g per egg (whole)
- Whey protein: 24 g per scoop
- Tofu (firm): 17 g per 100 g
- Lentils (cooked): 9 g per 100 g
- Edamame: 11 g per 100 g
High-protein day examples
Sample daily protein layouts at different targets.
120 g protein day · ~1,800 kcal
- Breakfast
- 3 eggs + 200 g Greek yogurt (38 g)
- Lunch
- 150 g chicken + 100 g rice + salad (40 g)
- Dinner
- 150 g salmon + veg + 100 g potato (38 g)
- Total protein
- 116 g
Good baseline for 60 kg adult general fitness.
180 g protein day · ~2,400 kcal
- Breakfast
- 5 eggs + 50 g oats + 1 scoop whey (52 g)
- Lunch
- 200 g chicken + 150 g rice + veg (58 g)
- Dinner
- 200 g lean beef + potato + salad (50 g)
- Snack
- 200 g cottage cheese (24 g)
- Total protein
- 184 g
Common for an 85–95 kg lifter on a cut.
Vegetarian · 130 g protein · ~2,000 kcal
- Breakfast
- 200 g Greek yogurt + 30 g nuts + berries (28 g)
- Lunch
- 150 g firm tofu + 80 g lentils + rice (40 g)
- Dinner
- Edamame 100 g + chickpea curry + naan (32 g)
- Snack
- 1 scoop pea protein + milk (30 g)
- Total protein
- 130 g
Plant-based 70 kg adult — protein is reachable without animal sources.
Common mistakes and misconceptions
- Worrying about kidney damage. No evidence in healthy adults; risk applies only to existing kidney disease.
- Eating all the protein in one meal. Synthesis caps at ~50 g per meal — spread it across the day.
- Skipping protein at breakfast. Breakfast is the meal most people under-protein. Aim for 30+ g.
- Relying entirely on whey shakes. Whole-food protein supports better satiety and overall nutrition; whey is a top-up, not a replacement.
Practical tips for hitting high protein daily
- Anchor each meal around a protein source — decide the protein first, then build the rest of the plate.
- Keep two emergency proteins in the fridge: pre-cooked chicken, hard-boiled eggs, or Greek yogurt.
- Use a whey or pea protein shake to close any gap in late afternoon.
- Front-load the day — 50 g protein in breakfast and lunch makes evening easier.
People also ask
How much protein per day to lose weight?
1.8–2.4 g per kg body weight is the supported range for fat loss while preserving muscle. For most adults, that's 130–200 g per day. Falling below 1.2 g/kg in a cut increases muscle loss meaningfully.
Is too much protein bad for you?
In healthy adults, no documented harm up to 3.5 g/kg in research studies. The only consideration is kidney load, which is fine in healthy kidneys. People with pre-existing kidney disease should discuss protein intake with their doctor.
How much protein at once is too much?
Muscle protein synthesis caps at roughly 0.4–0.55 g/kg per meal (about 25–50 g for most adults). Eating 80 g at one meal isn't harmful, but only ~50 g maximally stimulates synthesis; the rest is used for general protein turnover and energy.
Can I hit high protein on a vegetarian or vegan diet?
Yes, with deliberate planning. Combine tofu, tempeh, seitan, lentils, beans, edamame, Greek yogurt (vegetarian), eggs (vegetarian), and protein powders (pea, soy, brown rice). Reaching 130–180 g daily is achievable but requires more food volume than animal-based diets.
Does protein timing matter or just total intake?
Total daily intake matters most. Timing (distribution across 3–5 meals of 30–50 g each) provides a small additional benefit — about 5–15% better muscle protein synthesis over a 24-hour window than concentrated single doses.
Related calculators & guides
- Main TDEE & Body Fat Calculator — calories + protein together
- Protein intake calculator — deeper protein math
- Calories for muscle gain — pairing protein with surplus
- Build muscle, lose fat — where high-protein matters most