Best Free Macro Calculator Online

Counting macros is one of the most effective approaches to nutrition whether your goal is fat loss, muscle gain, or athletic performance. Our free macro calculator computes your ideal daily intake of protein, carbohydrates, and fats based on your age, gender, weight, height, activity level, and specific fitness goals.

The calculator first determines your total daily energy expenditure, then splits those calories into optimal macronutrient ratios for your chosen goal. Results include gram targets and calorie breakdowns for each macro, along with explanations of why each ratio works for your situation.

Build a complete nutrition strategy by combining the macro calculator with our calorie calculator for total energy needs, our protein calculator for detailed protein timing, our TDEE calculator for accurate expenditure estimates, our body fat calculator for composition tracking, and our water intake calculator for hydration goals.