Protein Intake Calculator

How much protein you actually need depends on your body, your training, and what you're trying to achieve, and getting that number right supports muscle growth, weight management, and general health. Heading into 2026, nutrition science keeps leaning toward personalized targets rather than one-size-fits-all rules, which is why your activity level and goals shape the figure as much as your weight does.

Calculation starts from your body weight in kilograms, then applies a protein coefficient between 0.8g and 2.2g per kg chosen according to your activity level and objective. Someone sedentary and focused on general health might sit at 0.8g/kg, while an elite athlete in a bulking phase could push toward 2.0-2.2g/kg. That coefficient gets nudged upward by a small margin, up to +10%, when the goal is meaningful muscle gain or fat loss, in line with 2026 guidance recognizing the higher demand during those phases.

Active people and anyone chasing real body-composition change routinely take in too little protein, which blunts their results. At the other extreme, pushing intake very high without enough water can tax the kidneys, so balance matters. Source quality counts too, so favor complete proteins and spread your total across the day to improve absorption and how well your body puts it to use.