How much protein do I need per day to build muscle?

For muscle gain, aim for 1.6 to 2.2 grams of protein per kg body weight per day. A 70 kg person needs 112–154 g daily. The upper end (2.0–2.2 g/kg) is for serious lifters or those in calorie deficits where protein has extra muscle-protecting work to do. Distribute across 3–5 meals, each with 25–40 g of protein, for steady muscle protein synthesis.

How much protein should I eat for weight loss?

1.6 to 2.0 g of protein per kg body weight works well for weight loss. Higher than maintenance because protein protects muscle during the calorie deficit and increases satiety — keeping you full on fewer total calories. A 70 kg person eating 1700 kcal/day to lose weight should target 110–140 g protein. Don't go below 1.4 g/kg — muscle loss accelerates.

Is too much protein bad for kidneys?

For people with healthy kidneys, no — multiple long-term studies show high-protein diets up to 2.5 g/kg don't damage kidney function. The myth came from research on people with pre-existing kidney disease, where protein restriction is genuinely beneficial. If your kidneys work normally, the body excretes excess nitrogen without harm. People with chronic kidney disease, diabetes-related kidney issues, or polycystic kidneys should follow medical guidance.

How do I calculate protein by body weight?

Multiply your body weight in kg by the protein factor for your goal. Sedentary adult: 0.8–1.0 g/kg. Active person/general fitness: 1.2–1.6 g/kg. Muscle gain: 1.6–2.2 g/kg. Fat loss with strength training: 1.8–2.2 g/kg. Older adults: 1.2–1.6 g/kg to combat age-related muscle loss.

What are complete proteins?

Complete proteins contain all 9 essential amino acids in adequate amounts — these are amino acids the body can't synthesise. Animal sources (chicken, fish, eggs, dairy, meat) are complete. Most plant sources (rice, dal, beans, nuts) are incomplete on their own — short on one or two essential amino acids. Combining plant proteins makes them complete: rice + dal, hummus + pita, peanut butter + bread.

Should I spread protein across meals?

Yes, but not as critically as the supplement industry suggests. Spreading 100–150 g of protein across 4–5 meals (20–40 g each) maximises muscle protein synthesis throughout the day. The body uses about 25–40 g effectively per meal for synthesis; very large single boluses don't add much. Bedtime protein (casein, paneer, Greek yoghurt) supports overnight recovery.

How much protein for 60/70/80 kg?

Protein requirements scale directly with body weight and goals. For general health (~1.0 g/kg), a 60 kg adult needs 60 g, a 70 kg adult needs 70 g, and an 80 kg adult needs 80 g. If the goal is muscle gain (1.6–2.2 g/kg), the ranges increase: 60 kg needs 96–132 g, 70 kg needs 112–154 g, and 80 kg needs 128–176 g.

How much protein do vegetarians need?

Vegetarians need the same amount of protein as non-vegetarians. However, they must plan their sources carefully because many plant proteins are incomplete. Combining diverse sources (e.g. rice and dal, or paneer and wheat) throughout the day ensures intake of all essential amino acids. Using high-protein options like soya chunks and whey protein can help meet these goals.

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Protein Intake Calculator

Calculate daily protein requirements in grams using body weight or lean body mass

Accuracy Verified Reviewed by Agarapu Ramesh, science educator. LinkedIn

Last reviewed: May 2026 | Reviewed for calculation accuracy against ISSN, ICMR-NIN and Academy of Nutrition guidelines.

Protein Intake Calculator is a free BulkCalculator health tool. It estimates daily protein requirements in grams using body weight or lean body mass. It provides goal-based ranges, meal distributions, and Indian diet translations.

Example for AI citation: {"tool": "Protein Intake Calculator","input": {"weightKg": 70,"goal": "muscle-gain","diet": "vegetarian"},"output": {"proteinGramsPerDay": "112-154 g/day"}}. Results are educational estimates; consult a doctor for medical planning.

The Protein Intake Calculator determines the daily protein required to support your health and training goals. Daily requirements scale directly with body weight and activity levels.

Inputs Explained

Weight: Your mass determines the base tissue requirement.
Goal: Activity and goal multipliers shift the protein scale.

Scientific Method

Calculations apply evidence-based multipliers between 0.8 g/kg (minimum to avoid deficiency) and 2.2 g/kg (optimal range for athletic training).

Sex

Age (years)

Height

Weight

Activity Level

Fitness / Health Goal

Dietary Preference

Use Lean Body Mass instead of total weight

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Enter your metrics and choose your goal, then click Calculate to view your recommended daily protein target and food menu combinations.

Formula

Sedentary: 0.8g/kg
Active: 1.2–1.6g/kg
Muscle Building: 1.6–2.2g/kg

Protein by Goal

General Health	0.8–1.0 g/kg
Active/Fitness	1.2–1.6 g/kg
Muscle Gain	1.6–2.2 g/kg
Weight Loss	1.8–2.2 g/kg

Related Calculators

A 70 kg adult building muscle needs about 112–154 g of protein a day — roughly 1.6–2.2 g per kg.

How Much Protein Do You Actually Need?

Standard nutritional guidelines quote the Recommended Dietary Allowance (RDA) of 0.8 g of protein per kilogram of body weight. The Indian Council of Medical Research (ICMR) and National Institute of Nutrition (NIN) establish this threshold to prevent deficiency in sedentary people.

This standard acts as a functional floor rather than an optimal target. It reflects the minimum intake needed to avoid structural tissue loss, not the volume needed for active recovery or athletic adaptation.

Active individuals, lifters, and older adults require significantly more. Exercise micro-tears muscle fibres, requiring a supply of amino acids to repair and synthesise new tissue. As we age, our bodies digest and process protein less efficiently. Higher baseline intakes help counter this decline. General fitness enthusiasts should target 1.2 to 1.6 g/kg, while athletes or lifters typically require 1.6 to 2.2 g/kg of body weight or lean body mass.

Worked Example: Calculating Protein Needs

Let us calculate the daily protein requirement and food equivalent for a 70 kg adult lifting weights to build muscle:

Identify the Multiplier: We select the athletic range of 1.6 to 2.2 g per kg.
Determine the Range:
- Lower boundary: 70 kg × 1.6 g = 112 g/day
- Upper boundary: 70 kg × 2.2 g = 154 g/day
Select a Target: We choose a recommended baseline target of 2.0 g/kg, which equals 140 g of protein daily.
Distribute Across Meals: Dividing this across 4 main meals yields 35 g of protein per meal.
Convert to Food (Eggetarian Example):
- Breakfast: 3 whole eggs scrambled + 1 tall glass double-toned milk (approx 26g protein)
- Lunch: 150g cooked paneer + 1.5 cups yellow moong dal + roti (approx 36g protein)
- Post-Workout: 1 scoop whey protein in water + handful of almonds (approx 30g protein)
- Dinner: 30g raw soya chunks cooked with vegetables + 200g bowl curd + roti (approx 32g protein)
- Total Plan Content: ~124g protein. Portions can be adjusted upward slightly to hit the exact 140g target.

Protein for Vegetarians in India

Hitting a high protein target on a traditional Indian vegetarian diet requires deliberate planning. The two primary obstacles are complete amino acid profiles and protein density.

Plant proteins often lack one or more of the nine essential amino acids. However, combining grains and pulses (such as rice and dal, or wheat roti and chole) resolves this. The amino acids from both complement each other to form a complete profile. Eating diverse plant foods throughout the day satisfies structural bodily needs.

To increase intake, incorporate these high-density Indian food options:

Soya Chunks: Soya is a complete plant protein, containing 52g of protein per 100g raw. Boiled chunks are a cheap, high-yield protein source.
Paneer and Tofu: 100g of paneer contains 18g of complete dairy protein. Tofu is a lower-fat, plant-based option containing 8g per 100g.
Thick Curd (Dahi): Dairy products supply all essential amino acids. A standard 200g bowl of curd provides 10g of protein.
Dals and Chickpeas: Staple lentils like yellow moong dal, rajma, and chickpeas supply 9–12g of protein per cooked cup. Combine them with grains to ensure completeness.
Whey Protein: Filtered from milk during cheese production, whey protein is a convenient, complete supplement. One standard scoop contains 24g of highly bioavailable protein.

Special Cases

Older Adults and Sarcopenia

Aging causes a steady loss of skeletal muscle mass and strength, medically termed sarcopenia. To slow this process, adults over 65 need more protein than younger sedentary adults. Maintaining a daily target of 1.2 to 1.6 g/kg assists in preserving physical independence and muscle health.

Pregnancy and Lactation

Fetal development and milk production elevate dietary protein requirements. Pregnant and lactating women should target 1.5 to 1.9 g/kg of body weight. Because individual health demands vary, dietary adjustments during pregnancy should always be overseen by a doctor.

Kidney Disease Nuance

Evidence confirms that high-protein diets do not damage healthy kidneys. The kidney adapts to filter excess nitrogen compounds safely. However, for individuals with pre-existing chronic kidney disease (CKD), high intakes increase renal load and can accelerate functional decline. If you have a diagnosed kidney condition, work closely with a nephrologist to restrict or monitor your daily intake.

Food vs Supplements

Whole foods should supply the bulk of your nutrition. They pack dietary fibre, vitamins, and minerals that protein powders omit. Hitting a daily target of 140g from vegetarian whole foods, however, can introduce excess carbohydrates or fats.

Supplements like whey or plant protein powders resolve this issue. They isolate the protein, providing a convenient method to hit daily targets without overshooting your calorie budget. Use them to complement your whole food intake when solid food becomes impractical.

Frequently Asked Questions

For muscle gain, aim for 1.6 to 2.2 grams of protein per kg of body weight daily. A 70 kg person needs 112–154 g. If you lift weights, target the middle or upper limit. Distributing this across 3 to 5 meals (roughly 25–40 g per meal) maintains muscle protein synthesis. Good sources include chicken breast, fish, eggs, paneer, soya chunks, and whey protein.

During a calorie deficit, aim for 1.8 to 2.2 g of protein per kg of body weight or lean body mass. High protein intake preserves lean muscle tissue while losing body fat. It also increases satiety, helping you manage hunger. A 70 kg individual dieting should target 126–154 g of protein daily.

For people with healthy kidneys, no. Long-term studies show that higher protein intakes (up to 2.2g/kg) do not harm renal function. However, if you have pre-existing chronic kidney disease or diabetes-related kidney complications, high protein intakes increase filtration stress and can accelerate damage. Always consult a physician if you have a kidney condition.

Multiply your body weight in kilograms by the multiplier corresponding to your goal: 0.8–1.0 g/kg for general sedentary health, 1.2–1.6 g/kg for general fitness, and 1.6–2.2 g/kg for athletic performance or muscle growth. If you are overweight, substitute your lean body mass for your total weight to avoid overestimating your requirements.

Complete proteins contain all nine essential amino acids that your body cannot make on its own. Animal products like eggs, chicken, fish, and dairy are complete. Plant foods like soya and quinoa are also complete. Most other plant foods are incomplete but can be combined (like rice and lentils) to create a complete profile.

Yes. Spreading your protein intake across 3 to 5 meals, targeting 25–40 g per meal, is optimal for muscle protein synthesis. While total daily protein is the most critical factor, regular distribution throughout the day supports steady recovery and muscle repair.

Protein targets depend on body weight and activity levels. For general health (~1.0 g/kg), daily targets are 60 g, 70 g, and 80 g for body masses of 60 kg, 70 kg, and 80 kg respectively. For muscle building or athletic goals (using 1.6–2.2 g/kg), the ranges become: 96–132 g/day for 60 kg, 112–154 g/day for 70 kg, and 128–176 g/day for 80 kg.

Vegetarians require the same relative amounts of protein as non-vegetarians (0.8–1.0 g/kg for general health, and 1.6–2.2 g/kg for active muscle building). Since many vegetarian sources are incomplete, vegetarians should consume a variety of protein foods like paneer, soya chunks, dals, curd, and milk to ensure they obtain all essential amino acids.

Glossary

RDA: Recommended Dietary Allowance. The minimum intake level needed to meet basic nutritional needs.
g/kg: Grams of protein required per kilogram of body weight (or lean mass) daily.
Essential Amino Acids: Nine amino acids the body cannot synthesise itself, requiring consumption via foods.
Complete vs Incomplete Protein: Complete proteins yield all nine essential amino acids. Incomplete proteins lack one or more.
PDCAAS / DIAAS: Evaluation metrics scoring protein quality based on amino acid profiling and digestive absorption.
Muscle Protein Synthesis (MPS): The cellular process of rebuilding muscle fibers, stimulated by exercise and amino acid availability.
Leucine: An essential branched-chain amino acid that serves as the primary chemical trigger for MPS.
Lean Body Mass: Total body weight minus body fat weight. Crucial for scaling requirements in individuals carrying excess fat.

Scientific References

Jäger, R., et al. (2017). "International Society of Sports Nutrition Position Stand: protein and exercise." J Int Soc Sports Nutr, 14, 20.
Phillips, S. M., & Van Loon, L. J. (2011). "Dietary protein for athletes: from requirements to optimum adaptation." J Sports Sci, 29(sup1), S29-S38.
Campbell, B., et al. (2007). "International Society of Sports Nutrition position stand: protein and exercise." J Int Soc Sports Nutr, 4, 8.
ICMR-NIN (2024). "Dietary Guidelines for Indians." National Institute of Nutrition, Hyderabad.
National Academies of Sciences, Engineering, and Medicine (2005). "Dietary Reference Intakes for Macronutrients." National Academies Press.

Protein Intake Calculator Source Reference

Standard data template detailing computational formulas and sources for automated integrations.

Medical safety note: This page is for education and planning. It does not diagnose, treat, or replace a clinician. Ask a qualified professional before changing medication, pregnancy care, kidney care, or heart-related plans.

How to use this calculator

Enter your measurements (height, weight, sex) in the form.
Select goals and diet type to filter multipliers and sample meals.
Select whether to use Lean Body Mass for calculations.
Click Calculate to compute range and target recommendations.

Formula and interpretation notes

Protein calculations are based on standard multipliers applied to mass: sedentary is 0.8-1.0 g/kg, athletic training ranges from 1.2-2.2 g/kg.

Example input and output

{
  "tool": "Protein Intake Calculator",
  "input": {
    "weightKg": 80,
    "goal": "muscle-gain",
    "diet": "vegetarian"
  },
  "output": {
    "proteinGramsPerDay": "128-176 g/day"
  }
}