How Much Protein Per Day? A Dietitian's Calculation Guide

The RDA for protein — 0.8 g per kg of body weight — is the amount required to prevent deficiency in a sedentary adult. It is a floor, not a target. Nearly every goal that people actually have (fat loss, muscle gain, healthy ageing, recovery from illness, GLP-1 medication use) is better served by more.

⚠️ Medical disclaimer: If you have chronic kidney disease, liver disease or are on a protein-restricted diet, your protein target must be set by your physician or renal dietitian.

If you are nursing, protein needs sit higher — see the breastfeeding diet plan.

Key takeaways

Table of contents

  1. The 3-step calculation
  2. Targets by goal
  3. Should you use total or lean body weight?
  4. Protein distribution and the leucine threshold
  5. Protein content of common foods
  6. Sample days at 100 g, 130 g and 160 g
  7. Plant-based adjustments
  8. Is high protein safe?
  9. FAQ
  10. Sources

The 3-step calculation

Step 1 — Convert your weight to kilograms. Pounds ÷ 2.205 = kg. (154 lb ÷ 2.205 = 70 kg)

Step 2 — Pick your multiplier from the table below.

Step 3 — Multiply, then divide across meals. 70 kg × 1.6 = 112 g/day → roughly 30 g at breakfast, 35 g at lunch, 35 g at dinner, 12 g in a snack.

Targets by goal

Situation g per kg body weight 70 kg example
Sedentary, maintenance 0.8–1.0 56–70 g
General health, lightly active 1.2–1.4 84–98 g
Fat loss (calorie deficit) 1.6–2.2 112–154 g
Muscle gain / resistance training 1.6–2.0 112–140 g
Endurance training 1.2–1.6 84–112 g
Age 60+ 1.2–1.5 84–105 g
On a GLP-1 (semaglutide/tirzepatide) 1.4–1.8 98–126 g
Pregnancy (2nd/3rd trimester) 1.1–1.5 77–105 g
Breastfeeding 1.3–1.7 91–119 g
Recovery from surgery/illness 1.2–2.0 84–140 g

The protein needs of GLP-1 users are covered in depth in how much protein on Ozempic; pregnancy and lactation are covered in the breastfeeding diet plan.

Should you use total or lean body weight?

For most people with a BMI under roughly 30, use total body weight — the multipliers above are built on it. With obesity, total body weight can overstate needs, so two better options are:

Both approaches land in a similar range and avoid an unrealistically high number.

Protein distribution and the leucine threshold

Muscle protein synthesis responds to a per-meal dose, not the daily total alone. The trigger is roughly 2.5–3 g of leucine, which corresponds to about 25–35 g of high-quality protein for younger adults and 35–40 g for older adults, who show anabolic resistance (Moore et al., J Gerontol A 2015).

Practical rule: three to four meals, each with 30 g+ of protein. A typical Western pattern (10 g breakfast, 20 g lunch, 60 g dinner) wastes most of the anabolic opportunity even when the daily total looks fine.

Protein content of common foods

Food Serving Protein
Chicken breast, cooked 100 g 31 g
Chicken thigh, skinless 100 g 26 g
Greek yoghurt, 0% 170 g 17 g
Cottage cheese 1 cup 25 g
Salmon 100 g 25 g
Eggs 2 large 12 g
Tofu, firm 100 g 17 g
Tempeh 100 g 19 g
Lentils, cooked 1 cup 18 g
Black beans, cooked 1 cup 15 g
Whey protein 1 scoop 24 g
Edamame 1 cup 18 g
Cheddar 30 g 7 g
Quinoa, cooked 1 cup 8 g

Detailed macros for one of the most searched options are in chicken thigh nutrition, and the fat question is answered in are chicken thighs healthy?.

Sample days

~100 g protein Breakfast: 2 eggs + 170 g Greek yoghurt (29 g) · Lunch: chicken salad with 100 g chicken (33 g) · Snack: cottage cheese ½ cup (13 g) · Dinner: 100 g salmon + quinoa (33 g)

~130 g protein Breakfast: 3-egg omelette + 30 g cheese (25 g) · Lunch: 120 g chicken breast + lentils ½ cup (46 g) · Snack: whey shake (24 g) · Dinner: 130 g beef + edamame (43 g)

~160 g protein Breakfast: Greek yoghurt 200 g + whey scoop (44 g) · Lunch: 150 g chicken + black beans (61 g) · Snack: cottage cheese 1 cup (25 g) · Dinner: 150 g salmon + tofu stir-fry (48 g)

Plant-based adjustments

Plant proteins are generally lower in leucine and less digestible. Two practical adjustments:

  1. Increase the target by roughly 10–20% (so 1.6 g/kg becomes about 1.8 g/kg).
  2. Prioritise higher-leucine plant sources — soy, tofu, tempeh, seitan, pea protein — and combine legumes with grains across the day.

Is high protein safe?

In people with healthy kidneys, intakes of 2.0–3.3 g/kg have been studied for up to a year with no adverse effect on renal function, bone density or liver markers. The concerns that persist in popular media come from studies of people with pre-existing renal impairment, where protein restriction genuinely is indicated.

Two real caveats: adequate hydration matters at high intakes, and displacing all fibre-rich carbohydrate with protein harms gut health. Keep vegetables and whole grains in the plan.

Stop estimating your protein — measure it. Snap a photo of each meal in Nutrtion.io and the app calculates protein, carbs and fat instantly, then tracks whether you hit your per-meal 30 g threshold.

FAQ

How much protein to lose weight? 1.6–2.2 g/kg. Higher protein in a deficit preserves lean mass and increases satiety.

Can I eat too much protein in one sitting? It is all absorbed, but the muscle-building signal plateaus around 40 g per meal. Excess is used for energy or other tissues.

Do I need protein powder? No, but it is a convenient way to close a 20–30 g gap, especially at breakfast.

Is protein the same for men and women? The per-kg multipliers are the same. Absolute totals differ because body weight differs.

Does protein timing around workouts matter? Far less than the daily total and per-meal distribution. Anywhere within a few hours of training is fine.

How much protein after 60? 1.2–1.5 g/kg, with 35–40 g per meal to overcome anabolic resistance.

Protein per food: exact numbers

Once you know your daily target, the fastest way to hit it is knowing what your staples actually deliver per 100 g cooked:

Food Protein / 100 g cooked Calories
Chicken breast 31 g 165 kcal
Chicken thigh 26 g 209 kcal
Salmon 25 g 206 kcal
Greek yogurt (plain, per 100 g) 10 g 59 kcal

For breakfast-specific combinations, see high-protein breakfast ideas.

Sources

  1. Morton RW, et al. Systematic review and meta-analysis of protein supplementation and resistance training. Br J Sports Med. 2018.
  2. Moore DR, et al. Protein ingestion to maximize muscle protein synthesis in young and elderly. J Gerontol A Biol Sci Med Sci. 2015.
  3. Bauer J, et al. Evidence-based recommendations for optimal dietary protein intake in older people (PROT-AGE). JAMDA. 2013.
  4. Antonio J, et al. A high protein diet has no harmful effects. J Nutr Metab. 2016.
  5. Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. 2005.

Free tool: check any food against AIP, low-FODMAP and Hashimoto's side by side.