How do I calculate my macros for weight loss?

To calculate macros for weight loss: 1) Find your TDEE (maintenance calories), 2) Subtract 300-500 calories for a deficit, 3) Set protein at 1.8-2.2g per kg body weight, 4) Set fat at 25-30% of calories, 5) Fill remaining calories with carbs. Our calculator does this automatically based on your stats.

What is the best macro split for fat loss?

A good macro split for fat loss is typically 40% protein, 30% carbs, 30% fat, or in grams: 2g protein per kg, 25-30% calories from fat, rest from carbs. Higher protein helps preserve muscle while losing fat. The exact split depends on your preferences and activity level.

How many grams of protein, carbs, and fat should I eat per day?

Daily macro needs depend on your weight and goals. General guidelines: Protein: 1.6-2.2g per kg body weight (higher when cutting). Fat: 0.8-1g per kg or 20-35% of calories. Carbs: Fill remaining calories (varies widely based on activity). For an 80kg person cutting: ~160g protein, ~70g fat, ~180g carbs.

What macros should I eat for muscle gain (bulking)?

For muscle gain, eat in a calorie surplus (200-500 cal above TDEE) with: Protein: 1.6-2g per kg body weight, Fat: 25-30% of calories, Carbs: High (fill remaining calories). A typical bulking split is 30% protein, 45% carbs, 25% fat. Carbs fuel intense training and support muscle growth.

What are the best macros for keto diet?

Keto macros typically are: 70-75% fat, 20-25% protein, 5-10% carbs (under 50g net carbs). For an 1800 calorie keto diet: ~140g fat, ~90g protein, ~25g carbs. Our calculator has a keto preset that automatically calculates these ratios based on your calorie needs.

How do I calculate macros based on body weight?

Calculate macros from body weight: Protein = 1.6-2.4g × body weight (kg), Fat = 0.8-1g × body weight (kg) or 20-35% of calories, Carbs = (Total Calories - Protein Calories - Fat Calories) ÷ 4. Example for 75kg: Protein ~150g, Fat ~75g, Carbs based on remaining calories.

What is the difference between macros and calories?

Calories measure total energy; macros are the nutrients providing those calories. Protein and carbs = 4 calories/gram, Fat = 9 calories/gram. You can hit the same calories with different macro splits. Tracking macros ensures you get enough protein for muscle and balanced nutrition, not just hitting a calorie number.

How do I adjust macros based on my goals?

Adjust macros by goal: Weight Loss: Higher protein (2-2.2g/kg), moderate fat (25-30%), lower carbs. Muscle Gain: Moderate protein (1.6-2g/kg), higher carbs (45-50%), moderate fat. Maintenance: Balanced split (30/40/30). Also adjust based on progress — if not losing weight, reduce carbs/fat slightly.

What is IIFYM (If It Fits Your Macros)?

IIFYM (If It Fits Your Macros) is a flexible dieting approach where you can eat any foods as long as you hit your macro targets. It emphasizes that total macronutrients matter more than specific food choices for body composition. However, food quality still matters for health and satiety.

Should I track net carbs or total carbs?

For general fitness: track total carbs. For keto diet: track net carbs (total carbs minus fiber). Net carbs represent digestible carbs that affect blood sugar. If eating high-fiber foods, net carbs give a more accurate picture of carb impact. Most people doing moderate diets track total carbs for simplicity.

How accurate is a macro calculator?

Macro calculators provide estimates based on formulas and averages. They're accurate starting points (within 10-15%) but individual metabolism varies. Use calculator results for 2-3 weeks, track your weight, and adjust: not losing weight = reduce calories by 100-200, losing too fast = add calories. The calculator gives you a baseline to refine.

Do I need to hit my macros exactly every day?

No, you don't need perfect macro accuracy daily. Aim for weekly averages: protein within 10g, carbs/fat within 15-20g. Protein is most important to hit consistently. Some flexibility with carbs and fat is fine. Focus on being consistent overall rather than obsessing over daily perfection.

Macro Calculator

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.

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calendar_today Updated: April 2025

auto_awesome AI Insights AI

Hot

Gender

Units

Age

Weight

Height

Activity Level

Goal

Diet Type

local_fire_department Daily Calories

2,400 cal/day

Your Macros

30/40/30

P/C/F

Protein

180g (30%)

Carbs

240g (40%)

Fat

80g (30%)

restaurant_menu Per Meal (3 meals)

Protein

60g

Carbs

80g

Fat

27g

Maintenance (TDEE)

2,600

Adjustment

±0

info

Balanced Diet (30/40/30)

Standard macro split suitable for most fitness goals. Good balance of all nutrients.

Input Values

Gender

Male

Female

Age

Weight

Weight Unit

lbs

Height

Height Unit

inches

Activity Level

expand_more

Goal

expand_more

auto_awesome AI Analysis

Macro Plan (80kg Male, Fat Loss Goal):

Calories: 2,100/day (500 deficit from TDEE)
Protein: 160g (2g per kg body weight)
Carbs: 210g (40% of calories)
Fat: 70g (30% of calories)

High protein intake preserves muscle during weight loss. Aim for 30-40g protein per meal for optimal absorption.

lightbulb Tips

•Protein: 4 cal/g, Carbs: 4 cal/g, Fat: 9 cal/g
•Prioritize protein (1.6-2.2g/kg)
•Don't go below 20% fat for hormones
•Aim for weekly averages, not daily

pie_chart Diet Ratios (P/C/F)

Balanced 30/40/30

High Protein 40/30/30

Low Carb 35/25/40

Keto 20/5/75

High Carb 25/50/25

How to Use This Calculator

person

Enter Your Stats

Input your gender, age, weight, and height for accurate BMR calculation.

fitness_center

Select Activity Level

Choose how active you are to calculate your TDEE (maintenance calories).

target

Choose Your Goal

Select fat loss, maintenance, or muscle gain to adjust calories appropriately.

nutrition

Pick Diet Type

Choose a macro ratio preset (balanced, high protein, low carb, keto) or customize.

The Formula

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

lightbulb Variables Explained

Protein Daily protein intake in grams (1.6-2.4g per kg body weight)
Fat Daily fat intake (20-35% of total calories)
Carbs Remaining calories after protein and fat
TDEE Total Daily Energy Expenditure

tips_and_updates Pro Tips

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

Macro Calculator — Calculate Your Daily Protein, Carbs & Fat

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.

How to Calculate Macros for Weight Loss

To calculate macros for weight loss: First determine your TDEE, then create a 300-500 calorie deficit. Set protein high (1.8-2.2g per kg) to preserve muscle, fat at 25-30% for hormone health, and fill remaining calories with carbs. Our calculator automates this process based on your stats and goal selection.

Macro Calculator for Muscle Gain

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.

Understanding Macro Ratios

Common macro splits: Balanced (30/40/30 protein/carbs/fat), High Protein (40/30/30), Low Carb (35/25/40), Keto (20/5/75). 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.

Protein, Carbs, and Fat Guidelines

Protein: 1.6-2.4g per kg body weight (higher when cutting). Carbs: Variable based on activity (2-6g per kg). Fat: 0.8-1.2g per kg or 20-35% of calories (don't go too low). Each gram provides: Protein 4 cal, Carbs 4 cal, Fat 9 cal. Our calculator balances these based on your selections.

Frequently Asked Questions

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