Calculate your daily protein intake needs based on weight, activity level, and fitness goals. Optimize your nutrition for muscle growth, weight loss, or overall health.
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Daily Protein
0 g
grams per day
Protein per kg
0.0 g/kg
per kg body weight
% of Calories
0%
assuming typical diet (2000 kcal)
Activity Level
-
your selected activity
Recommended Protein-Rich Foods
Chicken Breast
31g protein per 100g
Eggs
13g protein per 100g (2 large eggs)
Greek Yogurt
10g protein per 100g
Salmon
20g protein per 100g
Lentils
9g protein per 100g (cooked)
Cottage Cheese
11g protein per 100g
Step-by-Step Calculation
1
Base Protein Requirement
Based on your activity level, your base requirement is determined.
2
Goal Adjustment
Your goal adjusts the protein requirement to meet your specific needs.
3
Total Daily Protein
Your final recommended daily protein intake.
Example Protein Calculations
Example 1: Active Adult Male
80 kg, active lifestyle, muscle building goal Base: 1.6 g/kg × 80 kg = 128g + Muscle building: +0.3 g/kg × 80 kg = 24g → 152g daily protein
Example 2: Sedentary Female on Weight Loss
65 kg, sedentary, weight loss goal Base: 0.8 g/kg × 65 kg = 52g + Weight loss: +0.2 g/kg × 65 kg = 13g → 65g daily protein
Example 3: Extremely Active Athlete
90 kg, extremely active, muscle building goal Base: 2.2 g/kg × 90 kg = 198g + Muscle building: +0.3 g/kg × 90 kg = 27g → 225g daily protein
Example 4: Moderate Activity Maintenance
70 kg, moderate activity, maintenance goal Base: 1.3 g/kg × 70 kg = 91g + No goal adjustment → 91g daily protein
Protein per kg Guidelines by Activity Level
Activity Level
g/kg/day
Description
Sedentary
0.8 g/kg
Little or no exercise
Light Activity
1.0 g/kg
1-3 days per week
Moderate
1.3 g/kg
3-5 days per week
Active
1.6 g/kg
6-7 days per week
Very Active
1.8 g/kg
Intense daily exercise
Extremely Active
2.2 g/kg
Athlete or professional
Protein Formula & Guide
Daily Protein (g) = Weight (kg) × Protein Factor
Protein Factor = Base (by activity) + Adjustment (by goal)
Activity Level Base Factors
Sedentary: 0.8 g/kg - Minimum for basic bodily functions
Light Activity: 1.0 g/kg - For casual exercisers
Moderate: 1.3 g/kg - For regular exercisers
Active: 1.6 g/kg - For dedicated fitness enthusiasts
Very Active: 1.8 g/kg - For intense daily training
Extremely Active: 2.2 g/kg - For professional athletes
Goal Adjustments
Maintenance: No adjustment - Standard activity-based recommendation
Muscle Building: +0.3 g/kg - Extra protein to support muscle protein synthesis
Weight Loss: +0.2 g/kg - Additional protein to preserve muscle mass during calorie deficit
Percentage of Calories
The calculator estimates protein's percentage of total daily calories based on a typical 2000-calorie diet. Protein provides 4 calories per gram, so the percentage is calculated as: (Daily Protein × 4) ÷ 2000 × 100.
For example, 100g of protein provides 400 calories, which is 20% of a 2000-calorie diet. The recommended range for protein is typically 10-35% of total daily calories.
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Muscle Building
Get precise protein recommendations optimized for muscle growth and recovery based on your activity level and training intensity.
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Goal-Based Results
Choose from maintenance, muscle building, or weight loss goals to receive protein recommendations tailored to your objectives.
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Food Sources Guide
View recommended protein-rich foods to help you meet your daily protein targets with real-world meal planning suggestions.
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Nutrition Breakdown
Understand how your protein intake fits into your overall diet with percentage of calories and per kg body weight metrics.
Protein is an essential macronutrient that plays a crucial role in building and repairing tissues, producing enzymes and hormones, and supporting immune function. Your daily protein requirement depends on several factors including your body weight, activity level, age, and specific fitness goals.
Why Protein Matters
Protein is composed of amino acids, which are the building blocks of your body. Adequate protein intake is essential for muscle growth and repair, maintaining healthy bones, supporting metabolic functions, and preserving lean body mass during weight loss. Unlike carbohydrates and fats, your body does not store protein, making daily consumption important.
Factors Affecting Protein Requirements
Body Weight
Protein needs scale with body weight. Heavier individuals require more protein to support their larger body mass, which is why recommendations are given in grams per kilogram.
Physical Activity
Exercise creates micro-tears in muscle tissue that require protein for repair. More active individuals need higher protein intake to support recovery and adaptation.
Fitness Goals
Muscle building requires additional protein to support muscle protein synthesis, while weight loss requires extra protein to prevent muscle breakdown during calorie restriction.
Age
Older adults may need more protein to counteract age-related muscle loss (sarcopenia). Adequate protein intake becomes increasingly important for maintaining strength and mobility.
Best Dietary Sources of Protein
Meeting your daily protein needs can be achieved through a variety of animal and plant-based foods. A diverse diet ensures you receive all essential amino acids your body needs.
Animal-Based Protein Sources
Animal proteins are considered complete proteins because they contain all nine essential amino acids. Excellent sources include lean meats like chicken and turkey (31g per 100g), fish like salmon and tuna (20-26g per 100g), eggs (13g per 100g), dairy products like Greek yogurt and cottage cheese (10-11g per 100g), and lean beef (26g per 100g).
Plant-Based Protein Sources
Plant proteins can be combined to create complete protein profiles. Excellent plant sources include lentils (9g per 100g cooked), chickpeas (8g per 100g), tofu (8g per 100g), quinoa (4g per 100g cooked), nuts and seeds (15-25g per 100g), and edamame (11g per 100g). Combining different plant proteins throughout the day ensures adequate amino acid intake.
Timing Your Protein Intake
Research suggests that spreading protein intake evenly across meals (20-40g per meal) may be more effective for muscle protein synthesis than consuming most protein in a single meal. For active individuals, consuming protein within 2 hours after exercise can optimize recovery and muscle repair.
Frequently Asked Questions (FAQ)
How much protein do I need per day?
Your daily protein needs depend on your weight, activity level, and goals. The general recommendation ranges from 0.8 g/kg for sedentary individuals to 2.2 g/kg for extremely active athletes. Use our calculator above to get a personalized recommendation based on your specific circumstances.
Can I eat too much protein?
While high protein intake is generally safe for healthy individuals, consuming more than 3.0-3.5 g/kg per day may cause digestive discomfort and put strain on kidneys over time. People with pre-existing kidney conditions should consult their healthcare provider before significantly increasing protein intake. Stay adequately hydrated when consuming higher protein levels.
Do I need protein supplements?
Most people can meet their protein needs through whole foods alone. Protein supplements like whey or plant-based powders can be convenient for athletes, busy individuals, or those struggling to meet their protein targets through diet alone. However, whole food sources provide additional nutrients and are generally preferred for overall nutrition.
Is plant-based protein as effective as animal protein?
Both plant and animal proteins can effectively meet your protein needs when consumed in adequate amounts. Animal proteins are complete proteins containing all essential amino acids, while most plant proteins are incomplete. However, by eating a variety of plant protein sources throughout the day (such as beans, grains, nuts, and seeds), you can easily obtain all essential amino acids your body needs.
Should I eat more protein as I age?
Yes, older adults (over 65) may benefit from higher protein intake (1.2-1.5 g/kg) to counteract age-related muscle loss (sarcopenia). Adequate protein combined with resistance exercise can help maintain muscle mass, strength, and mobility in older age. Consult a healthcare provider for personalized recommendations.
Does protein help with weight loss?
Yes, protein can support weight loss in several ways. It increases satiety (feeling full), helping you eat fewer calories overall. Protein also has a higher thermic effect than carbs or fats, meaning your body burns more calories digesting it. Additionally, adequate protein intake during weight loss helps preserve muscle mass, which is important for maintaining metabolic rate.
Medical Disclaimer: This protein calculator is for informational purposes only and should not replace professional medical or nutritional advice. Individual protein needs may vary based on health conditions, medications, and other factors. Consult a qualified healthcare provider, registered dietitian, or nutritionist before making significant changes to your diet or supplement regimen, especially if you have pre-existing health conditions.