Our macro calculator uses your TDEE (Total Daily Energy Expenditure), body weight, and fitness goals to calculate the optimal macronutrient split. Whether you're cutting, bulking, or maintaining, get precise protein, carb, and fat targets in grams and percentages. Supports multiple diet types including balanced, low-carb, high-protein, and keto.
Balanced Diet (30/40/30)
Standard macro split suitable for most fitness goals. Good balance of all nutrients.
Input your gender, age, weight, and height for accurate BMR calculation.
Choose how active you are to calculate your TDEE (maintenance calories).
Select fat loss, maintenance, or muscle gain to adjust calories appropriately.
Choose a macro ratio preset (balanced, high protein, low carb, keto) or customize.
Macros are calculated based on your TDEE and adjusted for your goal. Protein is prioritized (1.6-2.4g/kg), fat is set at a healthy minimum (20-35%), and carbs fill the remaining calories. Each macro provides: Protein = 4 cal/g, Carbs = 4 cal/g, Fat = 9 cal/g.
Protein = Weight × Multiplier, Fat = Calories × Fat%, Carbs = Remaining Calories
Prioritize protein intake for muscle preservation during weight loss
Don't go below 20% fat to maintain hormone health
Adjust carbs based on activity level and training intensity
Track your macros for 1-2 weeks to build awareness
Weigh yourself weekly and adjust macros if progress stalls
Higher protein (2.2-2.4g/kg) is beneficial when cutting
Carbs are important for high-intensity training performance
Our free macro calculator determines your optimal daily macronutrient intake based on your TDEE, body weight, and fitness goals. Get personalized protein, carb, and fat targets in grams for weight loss, muscle gain, or maintenance. Supports multiple diet types including balanced, high-protein, low-carb, and keto.
To calculate macros for weight loss:
Our calculator automates this process based on your stats and goal selection.
For muscle gain (bulking), eat in a 200-500 calorie surplus above TDEE.
Protein at 1.6-2g/kg supports muscle protein synthesis, while higher carbs (45-50%) fuel intense training and recovery. Fat at 25-30% maintains hormonal health.
Our calculator provides exact gram targets for your bulk.
Common macro splits:
The best ratio depends on your goal, activity level, and food preferences. Higher protein benefits fat loss, higher carbs benefit performance, keto works for some but not all.
Each gram provides: Protein 4 cal, Carbs 4 cal, Fat 9 cal.
Our calculator balances these based on your selections.
Macronutrients — protein, carbohydrates, and fat — are the three nutrients that supply energy (calories). Protein and carbs provide about 4 calories per gram; fat about 9. Alcohol provides 7 but isn't a nutrient.
The Dietary Guidelines for Americans set Acceptable Macronutrient Distribution Ranges:
'Macros' are these three; managing their balance shapes body composition and performance beyond total calories alone.
Setting macros usually starts with calories (your TDEE adjusted for your goal), then protein (often 1.6-2.2 g/kg per ISSN), then fat (a minimum ~0.5-1 g/kg for hormones), with carbohydrates filling the remaining calories to fuel training.
This 'protein and fat first, carbs fill the rest' method ensures the most important targets are met.
Ratios vary by goal and preference — there's no single correct split, but protein is the anchor.
Converting macros to calories uses fixed values:
So 150 g protein = 600 kcal, 200 g carbs = 800 kcal, and 60 g fat = 540 kcal, totaling about 1,940 kcal.
These conversion factors, standard in nutrition science, let you translate a calorie target into gram goals for each macro and check that your macro plan adds up to your intended calories.
Flexible dieting, or 'If It Fits Your Macros' (IIFYM), lets you eat any foods as long as you hit your daily macro targets, rather than following a rigid 'clean eating' list. It improves adherence by allowing favorite foods in moderation.
The Academy of Nutrition and Dietetics notes food quality still matters for health, fiber, and micronutrients, so most of the diet should come from whole foods — with flexibility for the rest. IIFYM makes tracking sustainable.
Diet styles are largely macro patterns.
Higher-carb approaches suit endurance athletes; higher-protein suits those prioritizing muscle and satiety. The Dietary Guidelines' broad ranges accommodate many patterns.
The best split is the sustainable one that hits your protein target and calorie goal — the rest is largely personal preference and performance needs.
Tracking macros means:
Consistency beats perfection — getting close most days works. Reading nutrition labels and building meals around a protein source simplifies it.
Over time you learn typical values and can track more loosely. The Academy of Nutrition and Dietetics notes tracking builds awareness that often improves diet quality on its own.
Frequent mistakes include:
Anchor protein first, keep fat above the minimum, weigh portions early, prioritize whole foods, and remember total calories still govern weight change.
Macros refine body composition once calories and protein are set.
Data sourced from trusted institutions
All formulas verified against official standards.