Macro Calculator

Calculate macronutrient ratios for your goals.

Formula & Methodology

Macros are split from daily calories: protein and fat in grams first, with the remainder as carbohydrates.

Worked Example

On 2,000 calories with 30% protein, 30% fat, and 40% carbs, you get 150 g protein, 67 g fat, and 200 g carbs.

Frequently Asked Questions

How are macros calculated?

Daily calories are divided into protein, fat, and carbohydrate percentages, then converted to grams (protein and carbs at 4 cal/g, fat at 9 cal/g).

What ratio should I use?

It depends on your goal. Higher protein supports muscle; lower carbs may suit low-carb diets. A balanced split is a common starting point.

Is this medical advice?

No. Macro needs vary by health and activity. Consult a registered dietitian for a tailored plan.

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