Use your own protein-per-kilogram or protein-per-pound target; the calculator does not prescribe one.
Calculate with the Protein Intake Calculator
Enter the values below. Required fields are checked before results are shown.
Protein Intake Calculator results
How to use the Protein Intake Calculator
- Select the requested method and measurement system where available.
- Enter measurements using the units shown in each label.
- Select Calculate or press Enter.
- Review the method, source, assumptions, limitations, and visible safety note.
Worked example
At 70 kg and an entered 1.2 g/kg target, the mathematical result is 84 g/day.
Understanding the result
Individual protein needs vary; this is not a deficiency test or medical prescription.
Assumptions
- Body weight and selected rate unit are correct.
Limitations
- Medical conditions, pregnancy, age, and training context can change needs.
- The result does not guarantee muscle gain.
Sources and method references
- National Academies dietary energy factors (2005). Uses general 4 kcal/g protein, 4 kcal/g carbohydrate, and 9 kcal/g fat factors.
Frequently asked questions
Does the result diagnose protein deficiency?
The result is an educational estimate based on the selected method and entered assumptions. Individual measurements, needs, and outcomes vary.
Does CalculatorCheck store inputs from the Protein Intake Calculator?
No. The calculation runs locally in your browser; entries are not saved, transmitted, or added to the page URL.
Is this medical or dietary advice?
No. It does not diagnose, treat, or prescribe for any condition.