Protein Intake Calculator: Find Your Daily Protein Needs for 2026

Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals. Get per-meal breakdowns.

Mathematical Audit

How Protein Intake Is Calculated

Daily protein needs are based on body weight multiplied by a factor that varies with activity level and fitness goals.

Daily Protein (g) = Body Weight (kg) × Protein Multiplier
Protein Per Meal = Daily Protein ÷ 3 meals
Protein Calories = Daily Protein × 4 kcal/g

Protein multipliers range from 0.8 g/kg for sedentary individuals to 2.2 g/kg for athletes building muscle. Research supports higher intake (1.6–2.2 g/kg) during caloric deficit to preserve muscle mass.

Operational Guide

How to Use the Protein Intake Calculator

1

Enter your body weight

Use your current weight in kg or lbs. The calculator converts automatically.

2

Select activity level

Choose from sedentary to athlete based on your weekly exercise frequency and intensity.

3

Choose your goal

Select maintain weight, lose fat, or build muscle. Fat loss and muscle building require higher protein.

4

Review protein targets

See daily total, per-meal target, and caloric contribution from protein.

Real-World Scenario Example

"A 70 kg male with moderate activity level aiming to build muscle."

Inputs

bodyWeight:70
weightUnit:kg
activityLevel:moderate
goal:build-muscle
age:30
sex:male

Result

Daily protein target of 126g (1.8 g/kg), approximately 42g per meal across 3 meals, providing 504 kcal from protein.

Important Disclaimer

These recommendations are general guidelines for healthy adults. Individuals with kidney disease, liver conditions, or specific medical needs should consult a healthcare provider.

Internal Linking

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E-E-A-T Genuineness

Sources & References

Healthline — How Much Protein Do You Need Per Day?

https://www.healthline.com/nutrition/how-much-protein-per-day

Scientific American — How Much Protein Do You Need? Experts Explain

https://www.scientificamerican.com/article/how-much-protein-do-you-need-experts-explain/

EverVital Nutrition — 2025-2030 Guidelines: Optimal Protein Recommendations

https://evervitalnutrition.com/protein-intake-guidelines-optimal-recommendations/