Protein Calculator
Estimate protein grams using a deliberately selected grams-per-kilogram factor.
Uses 1.2 g per kg of body weight; needs vary with health, pregnancy, age and training.
How to use this calculator
- Enter body weight and a factor appropriate to guidance you have chosen.
- Review the live result and use Copy result when you need to share it.
How the calculation works
Body weight in kilograms is multiplied by the selected grams-per-kilogram factor.
Formula
Body weight in kilograms is multiplied by the selected grams-per-kilogram factor.
Step-by-step calculation
- Enter body weight and a factor appropriate to guidance you have chosen.
- Body weight in kilograms is multiplied by the selected grams-per-kilogram factor.
- Check the displayed result, then copy it if needed.
Worked example
At 70 kg and 1.2 g/kg, the estimate is 84 g/day.
Risk guidance
Frequently asked questions
Does this tool send my inputs anywhere?
No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.
How should I use the result?
Check that the entered units and values match your situation, especially around dates, breaks, and rounding.
Related tools
Macro Calculator
Convert calorie targets and macro percentages into daily gram targets.
Open toolCarbohydrate Calculator
Estimate a broad carbohydrate range from daily energy intake.
Open toolFat Intake Calculator
Estimate a broad dietary-fat range from daily energy intake.
Open tool