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Protein Intake Calculator

Find your optimal daily protein intake by body weight and goal.

Last updated: June 13, 2026

Calculator

Body Weight

lbs

Goal

Results

Daily Protein Range123–170 g/day

Per Meal (3 meals)41–57 g/meal

Per Meal (4 meals)31–43 g/meal

Chicken Breast Equivalent4.0–5.5 servings

~31g protein per 4oz serving

How to Use This Calculator

1Enter your body weight in pounds.
2Select your primary goal: general health, active lifestyle, muscle building, or fat loss.
3Your personalized daily protein range appears instantly.

Formula Explanation

Protein needs are calculated based on grams per kilogram of body weight, with multipliers adjusted for activity level and goal.

Protein (g) = Body Weight (kg) × Goal Multiplier

Variables:

Body WeightYour weight converted to kilograms

Goal Multiplier0.8-1.0 (sedentary), 1.2-1.6 (active), 1.6-2.2 (build), 1.8-2.4 (fat loss)

Worked Examples

Building Muscle: 170lb Person

1. Weight in kg: 77.1 kg
2. Range: 1.6 to 2.2 g/kg
3. Low end: 77.1 × 1.6 = 123g
4. High end: 77.1 × 2.2 = 170g

Result: 123–170g protein per day

Why Use This Calculator

Prevents muscle loss during a calorie deficit.
Supports muscle growth when combined with resistance training.
Improves satiety and helps control appetite.
Tailored to your specific body weight and fitness goal.

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Tips & Best Practices

Spread protein intake across 3-4 meals for optimal muscle protein synthesis.
Complete protein sources include meat, fish, eggs, dairy, and soy.
Leucine-rich foods (whey, eggs, chicken) are especially effective for muscle building.

Common Mistakes to Avoid

❌ Eating all protein in one meal.

✅ Distribute 25-40g per meal across 3-4 meals daily.

❌ Using total weight instead of lean mass for obese individuals.

✅ If significantly overweight, use goal body weight instead of current weight.

Frequently Asked Questions

Can I eat too much protein?

For healthy adults, protein up to 2.2g/kg is well-tolerated. Higher intakes are generally safe but offer diminishing returns. Those with kidney disease should consult a doctor.

Do I need protein powder?

Protein powder is a convenience, not a necessity. Whole food sources are ideal, but powder helps if you struggle to meet targets through food alone.

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Embed This Calculator

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Width

Height

<iframe src="https://redicalc.com/embed/fitness/protein-calculator" width="100%" height="600" style="border:none;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,0.1);" title="Protein Intake Calculator — RediCalc.com" loading="lazy" allowtransparency="true"></iframe>

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Disclaimer: This calculator is provided for informational and educational purposes only. Results are estimates and should not be used as a substitute for professional advice. RediCalc.com makes no guarantees regarding the accuracy, completeness, or suitability of any calculations. Always consult a qualified professional before making financial, health, construction, or other important decisions.

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