How do I calculate my macros?

First determine your daily calorie target using a TDEE calculator. Then select your fitness goal and diet preference. The calculator distributes your calories across protein, carbs, and fat based on evidence-based ratios for your chosen plan.

What is the best macro ratio for weight loss?

A balanced weight loss macro split is typically 35% protein, 35% carbs, and 30% fat. Higher protein helps preserve muscle mass during a caloric deficit. For a 2,000 calorie diet, this equals 175g protein, 175g carbs, and 67g fat.

Do I need to track macros or just calories?

Tracking macros provides more control over body composition than tracking calories alone. Adequate protein intake is especially important for preserving muscle during weight loss and building muscle during a surplus.

How much protein do I need per day?

For most active adults, 1.6 to 2.2 grams of protein per kilogram of body weight is recommended. This range supports muscle maintenance during weight loss and muscle growth during a surplus.

Macro Calculator | Fitness Calculators

What Are Macronutrients?

Macronutrients, commonly called macros, are the three primary nutrients that provide energy to your body. Each macro serves distinct functions and contributes a specific number of calories per gram:

Protein (4 kcal/g): Builds and repairs muscle tissue, supports immune function, and produces enzymes and hormones.
Carbohydrates (4 kcal/g): Your body’s preferred energy source, fueling brain function, physical activity, and recovery.
Fat (9 kcal/g): Essential for hormone production, nutrient absorption, cell membrane integrity, and long-term energy storage.

The ratio in which you consume these macros significantly impacts your body composition, energy levels, and overall health outcomes.

How This Macro Calculator Works

Our calculator takes three inputs: your daily calorie target, your fitness goal, and your diet preference. It then applies evidence-based macro ratios to distribute your calories across protein, carbs, and fat.

The calculator supports five diet approaches:

Balanced: A moderate distribution suitable for most people.
Low Carb: Reduced carbohydrates with higher fat and protein.
High Protein: Maximizes protein for muscle building and satiety.
Keto: Very low carb (5%) with high fat for ketogenic dieting.
Vegan: Plant-based ratios optimized for adequate protein from non-animal sources.

Macro Ratios by Goal and Diet

Weight Loss Macros

When cutting calories, higher protein intake helps preserve lean muscle mass and increases satiety. Here are example splits for a 2,000 kcal target:

Balanced: 35% protein (175g), 35% carbs (175g), 30% fat (67g)
Low Carb: 40% protein (200g), 20% carbs (100g), 40% fat (89g)
High Protein: 45% protein (225g), 25% carbs (125g), 30% fat (67g)
Keto: 30% protein (150g), 5% carbs (25g), 65% fat (144g)

Muscle Gain Macros

Building muscle requires a caloric surplus with adequate protein and carbs to fuel training and recovery. For a 3,000 kcal target:

Balanced: 35% protein (263g), 40% carbs (300g), 25% fat (83g)
High Protein: 45% protein (338g), 30% carbs (225g), 25% fat (83g)

Maintenance Macros

At maintenance calories, a moderate distribution supports overall health. For a 2,500 kcal target:

Balanced: 30% protein (188g), 40% carbs (250g), 30% fat (83g)

Real-World Examples

Here are practical macro calculations for different scenarios:

Office worker losing weight: 1,800 kcal, balanced diet. Protein: 158g, Carbs: 158g, Fat: 60g. This provides enough protein to maintain muscle while creating a moderate deficit.
Athlete building muscle: 3,200 kcal, high protein. Protein: 360g, Carbs: 240g, Fat: 89g. The high protein supports recovery from intense training sessions.
Keto dieter: 2,000 kcal, keto. Protein: 150g, Carbs: 25g, Fat: 144g. The very low carb intake promotes ketosis while maintaining adequate protein.
Vegan maintaining weight: 2,200 kcal, vegan. Protein: 138g, Carbs: 248g, Fat: 73g. Higher carb ratio reflects the macronutrient profile of plant-based protein sources.

How to Hit Your Macro Targets

Tracking macros does not require perfection. Aim to be within 5 to 10 grams of each target on most days. Here are practical tips:

Prioritize protein: Plan your protein sources first (chicken, fish, eggs, tofu, legumes), then fill in carbs and fat around them.
Use a food tracking app: Apps like MyFitnessPal or Cronometer make it easy to log meals and see your macro breakdown.
Meal prep: Preparing meals in advance helps you control portions and hit your targets consistently.
Be flexible: The IIFYM (If It Fits Your Macros) approach allows any food as long as it fits your daily targets, making the diet more sustainable.

Understanding Calorie Density

Fat contains more than twice the calories per gram compared to protein and carbs. This means high-fat foods are calorie-dense, which is important to consider when managing portions:

100g of chicken breast: 165 kcal (31g protein, 0g carbs, 3.6g fat)
100g of almonds: 579 kcal (21g protein, 22g carbs, 50g fat)
100g of white rice (cooked): 130 kcal (2.7g protein, 28g carbs, 0.3g fat)

Choosing lean protein sources and whole grains allows you to eat larger volumes of food while staying within your calorie target.

When to Recalculate Your Macros

Recalculate your macros when your body weight changes by more than 3 to 5 kg, when you change your activity level significantly, when you switch fitness goals (from cutting to bulking, for example), or every 4 to 6 weeks during an active diet phase. Your calorie needs shift as your body adapts, so periodic recalculation keeps your plan aligned with your current situation.

Macro Calculator