Protein Intake Calculator – How Much Protein Do You Need?
Calculate your optimal protein intake based on scientific recommendations for your specific goals and activity level.
💡 Coach Tip: Protein is the most important macro for body composition. It preserves muscle during fat loss and builds it during bulking. Most people undereat protein — prioritize it at every meal.
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Your Protein Targets
Daily protein intake recommendations
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Your personalized targets will appear here
How Much Protein Do You Need? A Science-Based Guide
A protein intake calculator helps you determine your optimal daily protein requirement based on your bodyweight, fitness goal, and activity level. Protein is the most critical macronutrient for body composition — it builds and repairs muscle tissue, supports fat loss by increasing satiety, and plays a central role in virtually every metabolic process in the body.
Anyone who exercises regularly — whether for fat loss, muscle building, or general health — benefits from knowing their precise protein target. The standard government guideline of 0.8g per kg of bodyweight is the minimum to prevent deficiency, not the optimal amount for active individuals. Fitness-focused adults, athletes, and anyone in a calorie deficit should significantly exceed this baseline.
This calculator determines your protein needs based on evidence-based recommendations that account for your goal and activity level. Protein per kg of bodyweight ranges from 1.2g/kg for sedentary individuals maintaining weight, up to 2.4g/kg for those in an aggressive fat loss phase who train intensely. Getting this right protects muscle during cuts and maximises muscle growth during surpluses.
Beyond muscle, adequate protein intake has been shown to reduce hunger, improve body composition independent of calories, and support metabolic health. Most people under-eat protein — prioritising it at every meal is one of the simplest and most impactful nutrition changes you can make, whether you are working with a coach or managing your own plan.
How to Use This Protein Intake Calculator
- Enter your bodyweight in kg or lbs using the unit toggle at the top of the calculator.
- Select your primary goal: Fat Loss, Maintenance, or Muscle Gain — each has different optimal protein ranges.
- Choose your activity level to fine-tune the recommendation.
- Click "Calculate Protein Needs" to see your minimum, optimal, and maximum daily protein targets, plus a per-meal breakdown.
- Aim to reach your optimal target consistently, distributing protein across 3–5 meals throughout the day.
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Why Protein Matters
High protein during a deficit preserves muscle mass, keeping metabolism high and ensuring you lose fat, not muscle.
Protein provides amino acids — the building blocks for muscle. Without adequate protein, muscle growth is limited.
Protein is the most filling macronutrient. Higher protein diets naturally reduce hunger and make it easier to stick to your calories.
Protein Guidelines by Goal
Minimum to prevent deficiency. Not optimal for active individuals or body composition goals.
Supports recovery and maintains lean mass with regular exercise.
Optimal range for maximizing muscle protein synthesis and recovery.
Higher protein during a deficit prevents muscle loss and maintains metabolism.