Macro Calculator for Muscle Gain

Convert a daily calorie target into a practical macro starting point. This tool prioritizes protein, assigns a moderate fat intake, and lets carbohydrate fill the remaining calories.

Why this is a starting point

Macro ratios are not magic. Adequate protein and total energy matter most for a muscle-gain phase; fat should remain sufficient for dietary quality and preference, while carbohydrate is especially useful for fueling resistance training.

Protein does not need to rise forever

For many resistance-training adults, evidence suggests that gains in fat-free mass show diminishing additional benefit beyond roughly 1.6 g/kg/day, although individual context and dieting status can justify somewhat higher targets.

Adjusting the result

• If you prefer more carbohydrate for training, choose the lower fat setting.
• If dietary preference favors higher-fat foods, choose a higher fat setting and accept fewer carbohydrate grams.
• If the calculated carbohydrates fall below zero, the calorie target is too low for the selected protein/fat settings.