How much protein do I need per day?

General guidelines: Sedentary adults need ~0.8g per kg of body weight. Active individuals and those aiming for weight loss or muscle gain benefit from 1.6‑2.2g per kg of body weight (or per kg of lean body mass). This calculator provides a personalized target based on your metrics and goal.

Why is protein important for weight loss?

Protein is highly satiating, helping control appetite. It also has a higher thermic effect (calories burned during digestion) and is essential for preserving lean muscle mass during a calorie deficit, ensuring more of the weight lost comes from fat.

Can I use imperial units?

Yes. Toggle between metric (kg, cm) and imperial (lbs, inches). All calculations are performed in metric and converted for display.

Should I use total body weight or lean body mass?

If you know your body fat percentage, using lean body mass provides a more accurate protein target (especially if you are very lean or overweight). This calculator uses lean mass if you provide body fat %, otherwise it defaults to total body weight.

Professional Protein Calculator — Daily Intake for Weight Loss & Muscle Gain

Food	Protein (g)	Calories	Fat (g)	Carbs (g)
Chicken Breast (skinless, raw)	22	120	2.6	0
Lean Beef (90/10, raw)	20	176	10	0
Salmon (Atlantic, farmed)	20	208	13	0
Eggs (whole, raw)	13	143	10	1
Greek Yogurt (non‑fat)	10	59	0.4	3.6
Tofu (firm)	8	76	4.8	1.9
Lentils (cooked)	9	116	0.4	20

Food

Protein (g)

Calories

Fat (g)

Carbs (g)

Chicken Breast (skinless, raw)

120

2.6

Lean Beef (90/10, raw)

176

Salmon (Atlantic, farmed)

208

Eggs (whole, raw)

143

Greek Yogurt (non‑fat)

0.4

3.6

Tofu (firm)

4.8

1.9

Lentils (cooked)

116

0.4

Protein: The Building Block of a Lean, Strong Body

Protein is essential for repairing tissue, building muscle, producing enzymes and hormones, and supporting immune function. Unlike carbohydrates and fat, the body has limited capacity to store protein, making consistent daily intake crucial. This Professional Protein Calculator uses your body metrics, activity level, and fitness goals to provide an evidence‑based protein target, helping you optimize body composition, performance, and overall health.

How Much Protein Do You Really Need?

Sedentary Individuals: The RDA is 0.8g per kg of body weight. This prevents deficiency but is suboptimal for active adults or those aiming to improve body composition.
Weight Loss / Fat Loss: Higher protein intakes (1.6‑2.2g/kg) preserve lean mass during a calorie deficit, increase satiety, and boost metabolic rate via the thermic effect of food.
Muscle Gain / Strength Athletes: 1.6‑2.2g/kg is the sweet spot. Going beyond 2.2g/kg offers diminishing returns but is safe for most healthy individuals.

💡 Protein Timing and Distribution

Aim to distribute protein evenly across 3‑5 meals/snacks, with each containing 20‑40g of high‑quality protein. This maximizes muscle protein synthesis and helps control hunger throughout the day.

Complete vs. Incomplete Proteins

Animal sources (meat, poultry, fish, eggs, dairy) provide complete proteins containing all nine essential amino acids. Plant sources (legumes, grains, nuts, seeds) are often incomplete but can be combined (e.g., rice and beans) to form a complete amino acid profile. The calculator's target applies regardless of protein source; just ensure variety if following a plant‑based diet.

Using Lean Body Mass for Greater Precision

If you know your body fat percentage, the calculator uses your lean body mass to determine protein needs. This is particularly useful for very lean individuals (who need more protein relative to total weight) or those with higher body fat percentages (where using total weight may overestimate needs).

Frequently Asked Questions

Can I eat too much protein?

For healthy individuals, high protein intakes (up to 3g/kg) are generally safe. However, those with pre‑existing kidney disease should consult a doctor. Excess protein beyond needs is either used for energy or stored as fat.

What's the best type of protein powder?

Whey protein is fast‑digesting and rich in leucine, ideal post‑workout. Casein digests slowly, good before bed. Plant‑based blends (pea, rice) are effective alternatives. Choose based on dietary preferences and tolerance.

Do older adults need more protein?

Yes. Aging is associated with anabolic resistance, meaning higher protein intakes (1.2‑2.0g/kg) are recommended to preserve muscle mass and function.

Can I get enough protein on a vegan diet?

Absolutely. Focus on legumes, tofu, tempeh, seitan, edamame, quinoa, and protein‑rich grains. A varied diet easily meets protein targets.

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Professional Protein Calculator

Protein Range for Your Goal

📋 How to Meet Your Target

High Protein Foods (per 100g)

Protein: The Building Block of a Lean, Strong Body

How Much Protein Do You Really Need?

💡 Protein Timing and Distribution

Complete vs. Incomplete Proteins

Using Lean Body Mass for Greater Precision

Frequently Asked Questions

All Calculators

Professional Protein Calculator

Protein Range for Your Goal

📋 How to Meet Your Target

High Protein Foods (per 100g)

Protein: The Building Block of a Lean, Strong Body

How Much Protein Do You Really Need?

💡 Protein Timing and Distribution

Complete vs. Incomplete Proteins

Using Lean Body Mass for Greater Precision

Frequently Asked Questions

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