TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE), Basal Metabolic Rate (BMR), calorie deficit/surplus strategies, customized macronutrient meal distribution, and 7-day zig-zag cycling.
Total Daily Energy Expenditure (TDEE)
Eating at this calorie intake preserves your current body weight.
Energy burned at complete rest to sustain vital life.
WHO adult weight status classification.
Calculated using WHO healthy BMI index.
Adjusted for body mass and activity sweat rate.
Daily Energy Expenditure Composition (Pillars)
Calorie Targets by Fitness Goal
| Fitness Objective | Daily Calorie Target | Weekly Calorie Deficit / Surplus | Estimated Rate of Body Change |
|---|
Complete Guide to Total Daily Energy Expenditure (TDEE)
Your Total Daily Energy Expenditure (TDEE) is the aggregate number of calories (kilocalories or kilojoules) your body burns over a 24-hour day. Understanding your TDEE is the cornerstone of evidence-based sports nutrition and body recomposition:
- Weight Maintenance: Calorie Intake = TDEE
- Fat Loss (Cutting): Calorie Intake < TDEE (Caloric Deficit)
- Muscle Hypertrophy (Bulking): Calorie Intake > TDEE (Caloric Surplus)
The Four Pillars of Metabolic Energy Expenditure
1. Basal Metabolic Rate (BMR) — 60% to 75%
The baseline energy required to sustain involuntary vital functions in a post-absorptive, resting state: cellular respiration, central nervous system signaling, cardiovascular circulation, and kidney/liver filtration.
2. Non-Exercise Activity Thermogenesis (NEAT) — ~15%
Energy expended during spontaneous daily movement outside deliberate exercise: walking, taking stairs, fidgeting, occupational work, typing, and maintaining standing posture.
3. Thermic Effect of Food (TEF) — ~10%
The metabolic cost of digesting, absorbing, and processing macronutrients. Dietary protein incurs the highest thermic cost (20–30% of energy ingested), followed by carbohydrates (5–10%) and fats (0–3%).
4. Exercise Activity Thermogenesis (EAT) — 5% to 10%
Energy burned during deliberate physical training sessions: weightlifting, HIIT cardio, running, cycling, swimming, or competitive athletic sports.
Evidence-Based Fat Loss Deficits & Refeed Protocols
To achieve sustainable fat loss while sparing metabolically active lean muscle tissue, scientific consensus recommends a daily deficit of 20% to 25% below your TDEE (typically 300 to 500 calories).
Why Extreme Caloric Restrictions Fail: Crashing calories below your BMR triggers adaptive thermogenesis, down-regulating thyroid hormone ($T_3$), reducing spontaneous NEAT output, and accelerating muscle catabolism.
The Power of Zig-Zag Cycling: Incorporating 1 to 2 higher-carbohydrate refeed days each week temporarily boosts circulating leptin levels, restores intramuscular glycogen reserves, and prevents psychological diet fatigue while maintaining your weekly fat loss target.
Frequently Asked Questions About TDEE
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