Daily Protein Intake Calculator
Protein is essential for muscle repair, enzyme function, and immune health.
⚙ Input Values
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📐 Formula
💡 Practical Example
75 kg strength training individual: Protein range = 1.8-2.2 g/kg → 135-165 g/day. Average = 150g/day = 600 kcal. Per meal: 50g protein per meal.
📖 About Daily Protein Intake Calculator
Protein is essential for muscle repair, enzyme function, and immune health. The DRI minimum is 0.8 g/kg, but active individuals and athletes benefit from 1.6-2.2 g/kg per day for optimal muscle protein synthesis.
To use the Daily Protein Intake Calculator, enter your Body Weight, Weight Unit, Activity Level & Goal. The calculator instantly computes Minimum Daily Protein, Maximum Daily Protein and more. Results update in real time as you change any input — no submit button needed.
How to Use This Calculator
Enter your Body Weight (e.g. 75 in kg), Weight Unit — select from kg, lbs, and Activity Level & Goal — select from Sedentary / Non-exercising — 0.8 g/kg (DRI minimum), Recreationally Active — 1.2-1.6 g/kg, Endurance Athlete — 1.6-1.8 g/kg. Results update instantly — no submit button needed. Use metric or imperial units as labeled. For the most accurate result, measure height and weight in the morning without shoes.
The Formula
Sedentary: 0.8 g/kg (DRI) | Active: 1.2-1.6 g/kg | Athlete: 1.6-1.8 g/kg
Strength training: 1.8-2.2 g/kg | Cutting: 2.2-2.6 g/kg
1g Protein = 4 kcal
Worked Example
75 kg strength training individual: Protein range = 1.8-2.2 g/kg → 135-165 g/day. Average = 150g/day = 600 kcal. Per meal: 50g protein per meal.
Understanding Your Result
Current evidence-based protein recommendations: Sedentary adults: 0.8 g/kg body weight (RDA minimum). Active adults: 1.2–1.6 g/kg. Athletes or those building muscle: 1.6–2.2 g/kg. Older adults (65+): 1.2–1.6 g/kg to counter sarcopenia. The RDA (0.8 g/kg) is the minimum to prevent deficiency — not the optimal intake for body composition or longevity. Protein at each meal (25–40g) maximizes muscle protein synthesis; distribution matters as much as total daily amount.
💡 Expert Health Guidance & Clinical Context
- This calculator uses clinically validated formulas and population reference data published by the WHO and NIH. Results are screening estimates, not medical diagnoses.
- Consult a licensed healthcare provider before making any changes to diet, medication, or exercise based on these results — individual variation is significant.
- Genetics, chronic conditions, and concurrent medications can dramatically affect what a "normal" result means for a specific individual.
- Track your results over time: a single data point is less meaningful than a trend measured consistently across multiple weeks or months.
- The CDC recommends adults receive routine health screenings at least annually. Use these calculations to prepare informed questions for your physician.
- Body composition, lifestyle factors, and stress levels all interact with the metrics shown here. No single number captures your full health picture.
- For pediatric or geriatric populations, reference ranges may differ significantly from the adult standards used in general calculators.
- Always cross-reference results with laboratory tests, clinical examinations, and professional medical evaluation before acting on any finding.
Results are for informational and educational purposes only. Always verify critical decisions with a qualified professional.