TDEE & Macronutrient Calculator
Calculate Total Daily Energy Expenditure, BMR, and macro splits for cutting or bulking.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use TDEE & Macronutrient Calculator
Choose Metric or Imperial and input your gender, age, height, and body weight.
Select your exercise frequency ranging from sedentary desk job to rigorous athletic training.
Select Maintenance, Fat Loss (-500 kcal), Aggressive Cut (-750 kcal), or Lean Bulk (+300 kcal) to view tailored macro splits.
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the energy your body burns at complete rest to stay alive. TDEE (Total Daily Energy Expenditure) multiplies your BMR by your physical activity level to determine total daily calories burned.
How should I split my macronutrients for fat loss?
A high-protein split (30-35% Protein, 35-45% Carbs, 20-30% Fat) helps preserve lean muscle tissue while maintaining a caloric deficit.
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