Protein Calculator
Estimate your daily protein needs based on activity.
Result
Results are estimates for general information only and are not professional advice.
Daily protein
Protein needs depend on body weight and activity — from about 0.8 g/kg for sedentary adults up to 2.0 g/kg for athletes building muscle. This calculator estimates your target in grams per day.
Frequently Asked Questions
What is the Protein Calculator?
Estimate your daily protein needs based on activity. It runs instantly in your browser and is completely free.
Is the Protein Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Protein Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.