TDEE Explained: Your Daily Energy Expenditure
TDEE (Total Daily Energy Expenditure) is the total calories your body burns in a day. Understanding it is foundational to any fitness goal—whether you want to lose fat, build muscle, or maintain.
Your TDEE consists of four components:
Components of TDEE
- BMR (Basal Metabolic Rate): Calories burned at rest (60–75% of TDEE). This is your baseline—energy used for breathing, heartbeat, cellular function.
- NEAT (Non-Exercise Activity Thermogenesis): Calories burned from daily movement: walking, working, fidgeting (15–20% of TDEE). Often underestimated.
- TEF (Thermic Effect of Food): Calories burned digesting food (~10% of TDEE). Protein requires more energy to digest than carbs or fat.
- EAT (Exercise Activity Thermogenesis): Calories burned during formal exercise (5–10% of TDEE).
Example: A 75kg, sedentary person might have:
BMR: 1,700 cal/day
NEAT: 400 cal/day (desk job, minimal movement)
TEF: 170 cal/day
EAT: 0 cal/day (no exercise)
TDEE = 2,270 calories/day
Same person who exercises 4 days/week could have TDEE of 2,800 cal/day (+530 from exercise alone).
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How to Calculate Your TDEE: Two Methods
Method 1: Harris-Benedict Formula (Fastest)
Men: BMR = 88.362 + (13.397 × weight kg) + (4.799 × height cm) − (5.677 × age)
Women: BMR = 447.593 + (9.247 × weight kg) + (3.098 × height cm) − (4.330 × age)
Then multiply by activity factor:
- Sedentary (no exercise): BMR × 1.2
- Light activity (1–3 days/week): BMR × 1.375
- Moderate activity (3–5 days/week): BMR × 1.55
- Very active (6–7 days/week): BMR × 1.725
- Extremely active (2x/day training): BMR × 1.9
Method 2: Track & Measure (Most Accurate)
- Track food intake for 7 days (use app like MyFitnessPal)
- Weigh yourself daily for 7 days, calculate average
- If weight is stable → your average daily intake ≈ your TDEE
- If weight increased by 0.5kg → add 250 cal/day to your eating estimate (0.5kg × 7,700 cal per kg ÷ 14 days)
→ Use Our TDEE Calculator
Macronutrients 101: Carbs, Protein, Fat
Macros are the three nutrients your body needs in large quantities. Each serves a distinct purpose.
| Macro |
Calories per gram |
Key Functions |
Typical % of Diet |
| Protein |
4 cal/g |
Muscle growth, recovery, immune function, satiety |
25-35% |
| Carbohydrates |
4 cal/g |
Energy (especially for brain & exercise), fiber, nutrients |
45-55% |
| Fat |
9 cal/g |
Hormone production, nutrient absorption, satiety, brain function |
20-35% |
Balanced Macro Split Example
For a 2,500 calorie day:
- Protein: 30% = 750 cal = 187g
- Carbs: 45% = 1,125 cal = 281g
- Fat: 25% = 625 cal = 69g
Key insight: These ratios are guidelines, not strict rules. The most important thing is hitting your protein target and controlling total calories. Carb/fat ratio is flexible based on preference.
→ Calculate Your Macro Targets
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How Much Protein Do You Actually Need?
This is the most misunderstood aspect of nutrition. Here's what the science says:
Protein Recommendations
| Goal |
Protein per kg |
Protein per lb |
Example (75kg person) |
| Sedentary / Maintenance |
0.8 g/kg |
0.36 g/lb |
60g/day |
| Fat loss (dieting) |
1.6-2.2 g/kg |
0.7-1.0 g/lb |
120-165g/day |
| Muscle building (surplus) |
1.6-2.0 g/kg |
0.7-0.9 g/lb |
120-150g/day |
| Very intense training |
2.0-2.2 g/kg |
0.9-1.0 g/lb |
150-165g/day |
Practical Rule of Thumb
Aim for 1.6–2.0g per kg of body weight if you're training. This covers muscle building, fat loss, and recovery.
For a 75kg person training 4+ days/week: 120–150g protein/day
Vegetarian & Vegan Protein Challenge
Plant-based proteins are less bioavailable than animal proteins. Vegetarians/vegans should aim for the higher end: 2.0–2.2g per kg.
Why? Plant proteins have:
- Lower digestibility (70–90% vs 95%+ for animal sources)
- Incomplete amino acid profiles (lacking some essential amino acids)
- Higher fiber (filling, but less energy for muscle building)
High-Protein Vegetarian & Vegan Sources
| Source |
Protein per serving |
Cost per 10g protein |
Notes |
| Paneer (100g) |
20g |
₹8 |
Complete amino acids, high fat |
| Chickpea (cooked, 200g) |
19g |
₹6 |
Budget option, carb-heavy |
| Tofu (200g) |
20g |
₹12 |
Neutral taste, versatile |
| Tempeh (100g) |
19g |
₹15 |
Better texture, fermented |
| Moong dal (cooked, 150g) |
12g |
₹4 |
Budget, incomplete amino acids |
| Hemp seeds (3 tbsp) |
10g |
₹20 |
Complete protein, expensive |
| Plant protein powder |
25g |
₹10 |
Convenient, check ingredients |
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Calorie Deficit Science: Why It's the Foundation of Fat Loss
Want to lose fat? This is non-negotiable: You must consume fewer calories than you burn. No food is "too bad" if you're in a deficit. No food is "magic" if you're not.
The Numbers
- 1 kg of body fat ≈ 7,700 calories
- Deficit of 500 cal/day = 0.5kg fat loss/week ≈ 2kg/month
- Deficit of 750 cal/day = 0.75kg fat loss/week ≈ 3kg/month
Note: You can't just eat less protein and expect fat loss. If calories drop but protein drops too, you'll lose muscle along with fat.
Optimal Deficit Strategy
Goal: Lose 8kg Fat in 4 Months
Required deficit: 8kg × 7,700 cal = 61,600 total. Divided over 120 days = 513 cal/day deficit.
Strategy:
- TDEE = 2,500 cal/day
- Target = 2,000 cal/day (500 deficit)
- Protein = 150g/day (non-negotiable for muscle preservation)
- Exercise = 4 days/week resistance training (critical for maintaining muscle)
Expected outcome: 8kg fat loss, muscle maintained or slightly built (new trainee effect).
Common Deficit Mistakes
- Too aggressive (1,500+ deficit): Leads to muscle loss, hormonal disruption, extreme hunger. Result: Look worse at lower weight.
- Too low protein in deficit: Body preferentially loses muscle, not fat. You lose weight but look no different.
- Ignoring NEAT: Sedentary people create accidental deficit just by moving more. Walk, take stairs, stand while working.
High-Protein Meal Planning (Vegetarian & Vegan Focus)
Sample Day: 2,000 Calories, 150g Protein (Vegetarian)
Breakfast (500 cal, 35g protein)
- 3 eggs + 2 slices whole wheat toast: 280 cal, 18g protein
- Greek yogurt (150g): 150 cal, 17g protein
- Berries + 1 tbsp honey: 70 cal, 0g protein
Mid-Morning Snack (200 cal, 25g protein)
- Plant protein shake (25g protein powder + almond milk)
- 1 apple
Lunch (550 cal, 45g protein)
- Paneer curry (100g paneer + 1 cup vegetables): 300 cal, 20g protein
- Brown rice (1.5 cups cooked): 250 cal, 6g protein
- Side salad with lemon: 0 cal, ~19g protein (from vegetables like chickpeas)
Dinner (600 cal, 40g protein)
- Chickpea & tofu stir-fry: 300 cal, 25g protein
- Quinoa (1 cup cooked): 220 cal, 8g protein
- Vegetables (spinach, broccoli): 80 cal, 7g protein
Evening Snack (150 cal, 5g protein)
- Hummus (3 tbsp) + carrot sticks: 150 cal, 5g protein
Total: ~2,000 cal, ~150g protein ✓
Sample Day: 2,000 Calories, 150g Protein (Vegan)
Breakfast (400 cal, 30g protein)
- Vegan protein oats (50g oats + 30g pea protein powder): 280 cal, 27g protein
- Banana + 1 tbsp almond butter: 120 cal, 3g protein
Mid-Morning Snack (200 cal, 25g protein)
- Hemp seeds (3 tbsp) + berries: 200 cal, 10g protein
- Plant protein shake (15g powder): ~90 cal, 15g protein
Lunch (600 cal, 40g protein)
- Tofu scramble (150g tofu, chickpea flour): 280 cal, 22g protein
- Whole wheat roti (2): 200 cal, 10g protein
- Vegetables + tahini dressing: 120 cal, 8g protein
Dinner (650 cal, 45g protein)
- Lentil & peanut stew: 400 cal, 30g protein
- Quinoa (1 cup cooked): 220 cal, 8g protein
- Green salad: 30 cal, 7g protein
Evening Snack (150 cal, 10g protein)
- Peanut butter (2 tbsp) on apple: 150 cal, 8g protein
Total: ~2,000 cal, ~150g protein ✓
→ Calculate Your Macro Targets
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Debunking Common Nutrition Myths
Myth: "Carbs are bad for weight loss."
Reality: Weight loss is about total calories, not macros. A study comparing low-carb vs high-carb diets with same calories showed equal fat loss. Carbs don't cause fat storage; calorie surplus does. Choose carbs you enjoy.
Myth: "Eating fat makes you fat."
Reality: Fat doesn't make you fat. Excessive calories do. Fat is calorie-dense (9 cal/g) so easy to overeat, but healthy fats (olive oil, nuts, avocado) are essential for hormones and health. Include them.
Myth: "You need supplements to build muscle."
Reality: Muscle is built from food (protein) + training + sleep. Supplements are optional convenience. Whole foods work just fine. Creatine and whey are the only evidence-backed supplements for muscle building.
Myth: "Vegetarian/vegan diets can't build muscle."
Reality: Plant-based diets can build muscle if protein target is met (higher intake needed ~2.0g per kg). Many elite vegan athletes (Serena Williams, Lewis Hamilton) prove this false.
FAQ
Q: How often should I eat?
A: Meal frequency doesn't matter. Total daily calories and protein do. Some people thrive on 2 meals/day; others prefer 5. Choose what lets you hit your targets comfortably.
Q: Should I count calories or intuitive eat?
A: Count calories for the first 4–8 weeks to learn portion sizes and build intuition. Then you can often eyeball it. But if you're not hitting targets, go back to counting.
Q: Is it okay to have a "cheat day"?
A: You don't need cheat days if you include foods you enjoy daily (within your macros). But if eating 2,000 cal pizza once weekly keeps you sane and adherent, it's worth it. Adherence > perfection.