What are macronutrients?

Macronutrients are the three main categories of nutrients your body needs in large amounts: protein, carbohydrates, and fats. Each plays a crucial role in your health and performance.

How much protein do I need per day?

For active individuals, aim for 1.6-2.2g of protein per kg of body weight. For general health, 0.8-1.0g per kg is sufficient. Protein is essential for muscle repair and satiety.

What is the best macro ratio for weight loss?

A common effective ratio is 40% Protein / 30% Carbs / 30% Fat. Higher protein helps preserve muscle mass and keeps you feeling full during a calorie deficit.

Do carbs make you gain weight?

No, excess calories cause weight gain, not carbs specifically. Carbohydrates are your body's primary energy source. Choose complex carbs like whole grains and vegetables for sustained energy.

How does kCal AI track macros?

Simply snap a photo of your meal. Our AI automatically identifies all ingredients and provides a complete breakdown of protein, carbs, fat, and other nutrients in seconds.

Should I track macros or just calories?

Tracking macros gives you a more complete picture. Calories tell you how much to eat, but macros tell you what to eat. Both matter for optimal health and performance.

Nutrition Tool

Macro
Calculator

Understanding your macros is key to achieving your fitness goals. Track protein, carbohydrates, and fats for optimal nutrition with AI-powered precision.

Unit System

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Age

Weight (kg)

Height (cm)

Activity Level

Primary Goal

Understanding Macros

The three building blocks of nutrition

Protein

Builds and repairs muscle tissue. Keeps you feeling full longer. Aim for 1.6-2.2g per kg of body weight for active individuals.

Carbohydrates

Your body's primary energy source. Choose complex carbs for sustained energy: whole grains, fruits, vegetables.

Healthy Fats

Essential for hormones and brain function. Include avocado, nuts, olive oil, and fatty fish in your diet.

AI-Powered Macro Tracking

Let kCal AI handle the tracking so you can focus on your goals

Instant Breakdown

Every meal is automatically broken down into protein, carbs, and fats with a single photo scan.

Custom Ratios

Set personalized macro ratios: 40/30/30 for balanced, 40/40/20 for muscle gain, or your own custom split.

Visual Dashboard

Beautiful charts show your daily macro compliance. See at a glance if you're hitting your targets.

Under 3 Seconds

No manual logging. Snap a photo and get complete macro data faster than you can type a food name.

Sync Everywhere

Track on iOS, Android, or web. Your macro data syncs seamlessly across all your devices.

Detailed Nutrients

Beyond macros — track fiber, sugar, sodium, vitamins, and minerals for complete nutritional awareness.

Common Macro Ratios for Different Goals

Your ideal macro ratio depends on your fitness goals, body type, and activity level. Here are the most commonly recommended splits:

Weight Loss (40/30/30): 40% Protein, 30% Carbs, 30% Fat — higher protein keeps you satiated and preserves muscle
Maintenance (30/40/30): 30% Protein, 40% Carbs, 30% Fat — balanced for everyday health and energy
Muscle Gain (30/50/20): 30% Protein, 50% Carbs, 20% Fat — carbs fuel intense workouts and recovery
Keto (20/5/75): 20% Protein, 5% Carbs, 75% Fat — forces your body to burn fat for fuel
Zone Diet (30/40/30): Balanced approach for anti-inflammatory benefits and stable blood sugar

Use kCal AI to automatically track your macros with just a photo. Our AI provides accurate breakdowns instantly, making it effortless to stay on track with any macro plan.

Frequently Asked Questions

Common questions about macronutrients and tracking

Track Your Calories with AI Precision

Download kCal AI for free and start tracking your meals instantly. Available on iOS and Android.

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MacroCalculator