How to Use the Macro Ratio Calculator
Your macronutrient split (carbs, protein, and fat) shapes how your body responds to the same calorie intake depending on your goal. Rather than just hitting a calorie number, matching your macro ratio to a cut, maintenance, or bulk phase gets you closer to the result you actually want. Enter your goal and daily calorie target to see your ideal carb, protein, and fat ratio and the grams for each.
For fat loss, protein is raised to 40% to help preserve muscle. For maintenance, a balanced 40% carbs, 30% protein, and 30% fat split is used. For muscle gain, carbs are raised to 45% to fuel training and support recovery. Protein and carbs are converted at 4 kcal per gram, and fat at 9 kcal per gram, to calculate the gram amounts.
You don't need to hit these gram numbers perfectly every day — a variance of about 5-10 grams rarely makes a meaningful difference, so staying close to the overall ratio matters more. If you don't know your daily calorie number, calculate your total daily energy expenditure (TDEE) first, then adjust it up or down based on your goal before entering it here.
Frequently Asked Questions
During fat loss, a higher protein ratio helps preserve muscle, while during a muscle-gain phase, more carbs support training energy and recovery. The right ratio depends on your specific goal.
Not exactly. A variance of about 5-10 grams rarely makes a meaningful difference — staying close to the overall ratio matters more than hitting exact numbers daily.
Calculate your total daily energy expenditure (TDEE) first based on your activity level, then adjust up or down from that number depending on your goal before entering it here.