The Macro Calculator is a free online tool that calculate daily macronutrient targets (protein, carbs, fat) in grams from your calories. presets for cutting, bulking, keto, low-carb, high-protein, plus custom splits and per-meal breakdowns.. It runs entirely in your browser with no installation or sign-up needed.

Calories per macro = total calories x split %. Grams = protein/carb calories / 4, fat calories / 9. Protein and carbs are 4 kcal/g; fat is 9 kcal/g.

Balanced (30/40/30) for general health. Cutting (40/30/30) preserves muscle in a deficit. Bulking (30/50/20) fuels growth. Keto (25/5/70) targets ketosis.

Switch to Calculate for me mode and enter age, sex, weight, height, activity — the tool derives TDEE from Mifflin-St Jeor BMR x activity factor.

Yes, the Macro Calculator is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.

Absolutely. The Macro Calculator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Macro Calculator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Macro Calculator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

The Macro Calculator uses industry-standard formulas and algorithms to ensure accurate results. However, for critical financial or medical decisions, always consult a qualified professional.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.