Body Recomposition Calculator & AI Meal Tracker
Evidence-Based Macro Math. Calculate your exact nutritional targets for body recomposition, fat loss, or muscle gain. By utilizing the Katch-McArdle formula and your Lean Body Mass (LBM), this tool provides a significantly more accurate metabolic baseline than standard BMI-based calculators (Source: NCBI).
Note: This application features active Local Storage. Every custom product you add and every macro change you make is saved directly to your browser. Your data remains fully private and intact every time you return, as long as you don’t clear your browser cache.
Custom Nutrient Profiles. In this section, you can fully edit the food database, formatted per 1 oz / 1 fl oz or 100g / 100ml to match your grocery labels perfectly. The calculator separates animal protein from plant protein to help you accurately hit your targets, whether your goal is fat loss, muscle gain, or body recomposition. We’ve preloaded 44 common foods for you - feel free to use them, delete them, add your own custom items, and organize everything into tailored categories.
| # | PRODUCT NAME | UNIT | PROTEIN | FATS | CARBS | CALORIES | TYPE | DEL |
|---|
Dynamic Macro Tracker. Set your targets manually or click 📥 Pull Macros to sync them from the calculator. Add items from your database to build your daily menu.
Tip: Select 8-13 items across all meals, and don't forget to include olive oil or your preferred cooking fat!
The Lock 🔒 icon allows you to fix the exact portion of specific foods (e.g., exactly 6 oz / 170g of steak). Then, click ✨ MAGIC DISTRIBUTE. The AI will automatically calculate the exact macro amounts for your remaining ingredients to perfectly hit your targets. Once the balance is achieved, export your plan as a PDF or click 🤖 AI Recipe to copy your prompt and generate custom meals with our AI Chef.
| # | Select Product | Amount | Total Prot | Animal Prot | Fat | Carb | Kcal | Del |
|---|
| Nutrient | Target (Should be) | Actual (From food) | Difference / Status |
|---|---|---|---|
| Protein | 0 | 0 | - |
| Fats | 0 | 0 | - |
| Carbs | 0 | 0 | - |
Your Personal AI Chef. Once your daily macros are perfectly distributed, hit Pull Data to instantly send your raw ingredients to our built-in AI Chef. The intelligent model will analyze your specific food list and generate 3 custom, easy-to-cook recipes that hit your exact calorie targets.
AI Chef Assistant
🟢 OnlineThe Ultimate Guide to Body Recomposition: How to Burn Fat and Gain Muscle Mass
For decades, the fitness industry has sold us a frustrating myth: you have to choose between bulking up and slimming down. You either eat in a massive calorie surplus to build muscle (inevitably gaining fat), or you aggressively cut calories to lose weight (losing your hard-earned muscle in the process).
Body recomposition breaks this outdated cycle. It is a science-backed process of changing your physique, allowing you to burn fat and gain muscle mass simultaneously. Instead of just watching the number on the scale drop, you are actively changing your body fat percentage while increasing your lean muscle mass.
Whether your goal is to burn fat and build muscle for a lean, athletic physique, or you are looking for a sustainable way to transform your body, the secret does not lie in starving yourself. Traditional diets fail because they only focus on total calories. To successfully change your physique, you must take control of your macronutrients (macros).
That is exactly why we created our smart body recomposition calculator above.
How to Calculate Macronutrients (Macros) for Weight Loss and Muscle Gain
Remember that nutrition is 80% of your success—it is the most important step on your fitness journey. My program is designed to adapt to your specific starting point. By selecting a goal in the dropdown menu, the calculations adjust to give you your perfect daily targets.
Fat Loss vs. Body Recomposition vs. Muscle Gain
Your daily energy intake dictates what your body will do with the nutrients it receives. Our calculator allows you to choose from three main goals:
- Fat Loss: Want to lose fat but keep your muscles? You need a small deficit. Our calorie deficit macro calculator cuts just a little (usually 200-300 calories) so you burn fat while staying full of energy for your workouts.
- Body Recomposition: Perfect for beginners, those returning to the gym after a break, or people with a "skinny-fat" body type. The maintenance macro calculator (also known as a TDEE calculator) keeps your calories in a perfect balance. If you train hard at this level, your body literally burns stored fat to build new muscle out of it.
- Muscle Gain: If you are already lean and want to get bigger, the bulking macro calculator will create a safe, controlled surplus. It will give you that extra food for muscle growth without gaining unnecessary fat.
The Best Macro Ratio for Fat Loss and Muscle Gain
There is no single "magic" ratio, but science gives clear recommendations. The best macronutrient ratio for weight loss while preserving muscle usually looks like this: 30-40% protein, 30-40% carbs, and 20-30% fats.
The exact ratio of carbs, protein, and fat for fat loss varies depending on your insulin sensitivity and activity level, but prioritizing protein is universal and non-negotiable for transforming your physique.
Breakdown: Protein, Carbs, and Fats
When you sit down to calculate your macronutrients, it is important to understand the role of each element:
- Protein: The main building block. A specialized protein calculator typically recommends 0.8 to 1.2 grams per pound of body weight to maximize muscle protein synthesis.
- Carbs: Your primary energy source, essential for heavy workouts.
- Fats: Crucially important for hormone production (such as testosterone) and overall health. Never drop your fat levels too low.
Building the Perfect Diet Plan
Hitting your macros is only half the battle; food quality matters too. A successful diet provides you with micronutrients, keeps you feeling full, and fuels your performance.
Best Foods for Fat Loss and Muscle Gain
Your grocery list should consist of high-quality, whole foods (single-ingredient foods). The best foods for weight loss and muscle gain include lean proteins (chicken breast, turkey, Greek yogurt), complex carbs (oatmeal, sweet potatoes, rice), and healthy fats (avocados, olive oil). Planning meals to build muscle and burn fat shouldn't be boring—it should be a lifestyle you enjoy.
Creating Custom AI Recipes
If you are tired of eating plain chicken and rice, our built-in AI nutritionist is made specifically for you. Once you lock in your daily goals, our smart Chef will generate personalized, easy-to-cook recipes that perfectly match your specific macro requirements.
Why You Need a Macro Tracker App (And Why Ours is Free)
Consistency is the final piece of the puzzle. You can have the best plan in the world, but if you don't track your intake, you are flying blind. Many people look for the best free macro tracking app because paying a monthly subscription for basic math is annoying.
While standard tools like the MyFitnessPal macro calculator are popular, they often hide their best features behind a paywall. That is why we built our macro calculator app to be completely accessible. It serves as a comprehensive free online macro calculator combined with a daily tracker and AI recipe generation.
Take the guesswork out of your fitness journey. Scroll back to the top, enter your details, lock in your daily goals, and let our free macro calculator be your guide to body recomposition today.