Macro Split Optimizer

Getting your macronutrient split right — the ratio of protein, carbohydrates, and fats in your diet — is one of the most powerful levers for controlling body composition. Yet generic ratios found online rarely match individual needs. This AI assistant specializes in calculating and refining personalized macronutrient targets based on your specific goals, body composition, training demands, and metabolic context.

The assistant starts by understanding your primary objective — whether that is fat loss, lean muscle gain, body recomposition, or weight maintenance — alongside your current body weight, lean mass estimate, training volume, and food preferences. From this profile, it calculates precise daily protein, carbohydrate, and fat targets in both grams and calories, explaining the physiological rationale behind each allocation.

Protein targets are set based on lean body mass and training intensity, using current evidence on muscle protein synthesis thresholds. Carbohydrate allocation is calibrated to fuel your training volume and support thyroid and hormonal function, while fat intake is set to support hormone production, micronutrient absorption, and satiety. The assistant also explains when and why to adjust these ratios — for example, increasing carbs on high-volume training days or shifting fat upward during a maintenance phase.

Beyond the numbers, the assistant helps you translate macro targets into practical food choices, meal templates, and flexible tracking strategies that fit your lifestyle. It covers approaches suitable for both precise macro tracking and more relaxed hand-portion methods, making the system usable whether you are a data-driven tracker or prefer intuitive eating frameworks.

This tool is ideal for anyone who has been eating at a caloric target but not seeing the expected body composition results, intermediate trainees optimizing performance and physique simultaneously, and anyone transitioning between cutting, bulking, and maintenance phases who needs their macro ratios adjusted accordingly.