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Protein Needs Calculator

Calculate daily protein requirements based on weight, activity, and goals.

Enter Values

Weight (kg)

Activity/Goal

Result

Enter values above and click Calculate to see your result.

AI Assistant

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Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.

Formula

Core Formula

\text{Protein (g)} = W_{\text{kg}} \times \text{Activity Factor}

How it works: Calculates the range of protein required for maintenance or muscle growth.

Worked Example

80 kg moderately active -> 104-128 g protein.

Protein Needs Calculator - Daily Grams by Goal

Protein is the primary building block of tissues, including muscle. Daily needs vary significantly based on your physical activity and metabolic goals.

Sedentary adults (RDA): 0.8g per kilogram of body weight
Active individuals: 1.2 to 1.5g per kilogram to support recovery
Athletes or those gaining muscle: 1.6 to 2.2g per kilogram (standard sports nutrition)
Clinical recovery: Higher protein intake is often needed for healing from surgery or significant injury

These values are general guidelines. Individual needs can vary based on age, existing muscle mass, and dietary preferences.

You can also calculate changes using our Body Recomposition Calculator, Meal Calorie Calculator, Macro Calculator, Calorie Calculator, BMR Calculator or Weight Loss Percentage Calculator.

Frequently Asked Questions

How much protein should I eat?

For most healthy, active adults, 1.2 to 1.6g per kg of body weight is a safe and effective range. If you are training hard for muscle, 1.8 to 2.2g is common.

Is too much protein bad for kidneys?

For healthy individuals, high protein is generally safe. Those with pre-existing kidney disease should consult their doctor before increasing protein intake.

Do vegans need more protein?

Because plant proteins can have lower bioavailability, some experts suggest vegans aim for the higher end of the recommended ranges.

How can I put this Protein Needs Calculator on my blog or website?

Yes, the Protein Needs Calculator is fully embeddable. Tap "Embed" above to configure appearance and copy the code. It is free to use, works on any platform (HTML, WordPress, CMS), and adjusts to any screen size automatically. Visit calculory.com/services/embed-calculators for the complete guide.

Medical Disclaimer

This calculator is provided for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making any decisions based on these results. Do not disregard or delay seeking medical advice because of information obtained from this tool.

AI Assistant

Ask about this calculator

I can help you understand the protein needs calculator formula, interpret your results, and answer follow-up questions.

Try asking

Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.

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Body Recomposition Calculator Meal Calorie Calculator Macro Calculator Calorie Calculator BMR Calculator Weight Loss Percentage Calculator

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