How much protein do I need per day?

The recommended daily protein intake varies by activity level. Sedentary adults need about 0.8g per kg of body weight, moderately active people need about 1.2g/kg, active individuals need 1.6g/kg, and athletes may need up to 2.0g/kg or more. If your goal is muscle building, add approximately 0.2g/kg to these values.

When should I eat protein for muscle building?

Distributing protein evenly across 3-4 meals throughout the day is more effective for muscle protein synthesis than consuming it all at once. Aim for 20-40g of protein per meal. Consuming protein within 2 hours after resistance training can also help maximize muscle recovery and growth.

Can I get enough protein from plant-based sources?

Yes, it is possible to meet protein needs with plant-based foods, though you may need to eat slightly more total protein since plant proteins are generally less digestible. Combine different plant proteins (legumes with grains, for example) to get a complete amino acid profile. Good sources include lentils, chickpeas, tofu, tempeh, quinoa, and nuts.

Is too much protein harmful?

For healthy individuals, consuming protein up to about 2.2g/kg body weight per day is generally considered safe. Very high protein intakes over long periods may strain the kidneys in people with pre-existing kidney conditions. Stay hydrated and consult a healthcare professional if you have kidney concerns.

Protein Calculator

Weight Unit

Weight

Activity Level

Goal

Daily Protein Intake

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Protein per Meal (3 meals)

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Protein per Meal (4 meals)

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Food Equivalents (approx daily)

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How the Protein Calculator Works

This protein calculator estimates your daily protein needs based on your body weight, physical activity level, and fitness goal. Protein is an essential macronutrient required for muscle repair, immune function, enzyme production, and countless other bodily processes. Getting the right amount is crucial whether you are trying to build muscle, lose fat, or simply maintain your current physique.

The calculator uses evidence-based protein multipliers measured in grams per kilogram of body weight. Sedentary individuals need approximately 0.8 g/kg, the minimum recommended dietary allowance. Moderately active people benefit from 1.2 g/kg, active exercisers from 1.6 g/kg, and competitive athletes from 2.0 g/kg. If your goal is to build muscle, an additional 0.2 g/kg is added to support muscle protein synthesis.

The results also break down your daily target into per-meal amounts for either 3 or 4 meals, since spreading protein intake throughout the day optimizes absorption and muscle recovery. The food equivalents section shows how much chicken breast, eggs, Greek yogurt, or lentils you would need to meet your daily target, making it easy to plan meals. Remember that individual needs vary based on age, health status, and specific training programs, so use these figures as a starting point and adjust based on your body's response.

Formula

Daily Protein (g) = Body Weight (kg) × Protein Multiplier (g/kg)

Where:

Sedentary multiplier = 0.8 g/kg
Moderate activity multiplier = 1.2 g/kg
Active multiplier = 1.6 g/kg
Athlete multiplier = 2.0 g/kg
For muscle building, add 0.2 g/kg to the multiplier

Example Calculation

Scenario: 75 kg active person aiming to build muscle

Step 1: Base multiplier for active = 1.6 g/kg
Step 2: Add muscle-building bonus = 1.6 + 0.2 = 1.8 g/kg
Step 3: Daily protein = 75 × 1.8 = 135 g/day
Result: 135 g protein per day, or about 45 g per meal across 3 meals

Disclaimer: This calculator provides estimates for informational purposes only. Consult a healthcare professional before making health or dietary decisions.

Protein Calculator

How the Protein Calculator Works

Formula

Example Calculation

Frequently Asked Questions

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