Health & Fitness
Macro Calculator - Protein, Carbs, Fat
Calculate daily macronutrients based on calorie and macro targets.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
Do the percentages need to total 100%?
Yes, total macros should add up to 100% for accurate results.
How are grams calculated?
Protein and carbs use 4 kcal per gram; fat uses 9 kcal per gram.
Is this good for any diet?
You can set any macro split that matches your goals or diet plan.
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About this tool
This Macro Calculator turns your inputs into practical results. Provide Daily calories, Protein, and Carbs to calculate Protein and Carbs.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.