The Macronutrient Ratio Calculator helps users determine how many grams of carbohydrates, proteins, and fats they should consume daily based on their total calorie intake and desired macronutrient distribution. It uses the formulas (Calories×Percentage÷100)÷4(\text{Calories} × \text{Percentage} ÷ 100) ÷ 4(Calories×Percentage÷100)÷4 for carbohydrates and protein, and (Calories×Percentage÷100)÷9(\text{Calories} × \text{Percentage} ÷ 100) ÷ 9(Calories×Percentage÷100)÷9 for fats, since carbs and protein provide 4 kcal per gram and fat provides 9 kcal per gram. This tool is perfect for fitness enthusiasts, diet planners, and anyone aiming to maintain balanced nutrition while achieving weight management or muscle-building goals.