Free TDEE Calculator: Instant Metabolic Rate Analysis

Your Total Daily Energy Expenditure (TDEE) is the most critical number for biohacking your body composition. It represents the exact number of calories you burn in a day based on your Basal Metabolic Rate (BMR) and activity level. To lose fat or gain muscle, you must know this number.

Why TDEE Matters for Biohacking

Unlike generic "2000 calorie" guidelines, biohacking requires precision. Your TDEE fluctuates based on your activity, muscle mass, and thermic effect of food. By establishing your accurate baseline, you can implement strategic caloric deficits for fat loss or surpluses for hypertrophy without guessing.

⚡ TDEE & BMR CALCULATOR

Bio-Metric Analysis System

Understanding Your Results

Once you have your TDEE, use these biohacking protocols to reach your goals:

1. Maintenance (Bio-Stasis)

This is your caloric equilibrium. Eat this amount to maintain your current weight and performance levels. This is often used during "diet breaks" to reset metabolic adaptation.

2. Cutting (Fat Oxidation)

To burn fat while preserving muscle mass, aim for a deficit of 300-500 calories below your TDEE. Biohackers often combine this with Intermittent Fasting for enhanced lipolysis.

3. Bulking (Hypertrophy)

To build lean tissue, you need a surplus. A conservative surplus of 200-300 calories minimizes fat gain while maximizing muscle protein synthesis.

Frequently Asked Questions

What is BMR vs TDEE? +
BMR (Basal Metabolic Rate) is what you burn in a coma. TDEE includes your movement and exercise. TDEE is the real number you need for diet planning.
How accurate is this calculator? +
It uses the Mifflin-St Jeor equation, widely considered the most accurate formula for estimating caloric needs in clinical settings.
Should I eat back exercise calories? +
No. Your activity level setting already accounts for your workouts. Eating them back would mean counting them twice.

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⚠️ Medical Disclaimer: This calculator provides estimates based on averages. Individual metabolic rates vary. Consult a nutritionist or doctor before undertaking extreme dietary changes.