What Is TDEE?
TDEE (Total Daily Energy Expenditure) is the number of calories you burn in a full day. It is the number that matters for your weight: eat at your TDEE and your weight stays roughly the same, eat below it and you lose, eat above it and you gain. A TDEE calculator builds it in two steps.
- BMR (Basal Metabolic Rate) is what your body burns at complete rest, just to keep you alive. This calculator uses the Mifflin-St Jeor equation: 10 × weight (kg) + 6.25 × height (cm) − 5 × age, then +5 for men or −161 for women. For most people BMR is 60–70% of TDEE.
- TDEE is your BMR multiplied by an activity factor that covers work, walking, exercise and digesting food.
| Activity level | Multiplier | TDEE example* |
|---|---|---|
| Sedentary: desk job, little or no exercise | BMR × 1.2 | ~2,070 kcal |
| Lightly active: exercise 1–2 days a week | BMR × 1.375 | ~2,370 kcal |
| Moderately active: exercise 3–5 days a week | BMR × 1.55 | ~2,670 kcal |
| Very active: hard exercise 6–7 days a week | BMR × 1.725 | ~2,970 kcal |
| Athlete: hard training plus a physical job | BMR × 1.9 | ~3,280 kcal |
*For a 25-year-old man, 75 kg and 175 cm, whose BMR is about 1,725 kcal. Most office workers who train 3–4 times a week are closer to "lightly active" than "moderately active", so if in doubt, pick the lower level.
Calories in Indian Terms
A number like 2,000 kcal means little until you can see it on a plate. After you calculate, the tool splits your target across breakfast, lunch, a snack and dinner. Use the approximate values below to turn that into everyday Indian food. Home recipes vary a lot with the amount of oil and ghee, so treat these as ballpark figures.
| Food (typical serving) | Calories | Protein |
|---|---|---|
| Roti / chapati, 1 medium (no ghee) | ~100 kcal | 3 g |
| Cooked rice, 1 katori (150 g) | ~190 kcal | 4 g |
| Dal with tadka, 1 katori | ~150 kcal | 7 g |
| Mixed sabzi, 1 katori | ~120 kcal | 3 g |
| Paneer, 100 g | ~265 kcal | 18 g |
| Chicken curry, 1 katori (about 100 g chicken) | ~250 kcal | 22 g |
| Eggs, 2 whole | ~145 kcal | 12 g |
| Curd (toned), 1 katori (200 g) | ~120 kcal | 6 g |
| Poha, 1 plate | ~250 kcal | 5 g |
| Idli, 2 with 1 katori sambar | ~250 kcal | 9 g |
| Samosa, 1 | ~250 kcal | 4 g |
Here is roughly what common targets look like across a day:
- About 1,600 kcal: poha and chai for breakfast; 2 roti, dal, sabzi and curd at lunch; roasted chana and a fruit as a snack; 2 roti with paneer bhurji or chicken and salad for dinner.
- About 2,000 kcal: the same day plus 1 katori of rice at lunch, a glass of milk, and one more roti at dinner.
- About 2,500 kcal: the 2,000 kcal day plus 2 eggs or a whey shake at breakfast, a handful of peanuts, and an extra katori of dal or rice.
For calories and protein in hundreds more foods, see our Indian food calories and protein chart. For a full week built around training, follow the Indian gym diet plan, and if you are vegetarian and cutting, start with the veg diet plan for fat loss.
Calories set the direction; protein and body composition decide what that weight is made of. Set your protein target with our protein calculator, and check where you are starting from with the body fat calculator.
The Science of Your Transformation
Body transformation isn't an art—it's a calculation. Whether you're aiming for muscle growth or fat loss, your results are dictated by the laws of energy balance. However, the UltraFit360 engine goes deeper than simple math to ensure your results are sustainable and healthy.
1. Decoding BMR and TDEE
BMR (Basal Metabolic Rate) represents the minimum energy your body requires to function at complete rest. It's the cost of keeping your organs running. TDEE (Total Daily Energy Expenditure) is your metabolic ceiling—the total calories you burn each day through work, movement, and exercise.
2. Surplus, Deficit, and The 7,700 Rule
Scientifically, 1kg of body fat stores approximately 7,700 calories of energy. To lose 1kg per week, you must create a 1,100-calorie daily gap. Our engine allows you to choose your Weekly Weight Change to match your lifestyle, whether you prefer a conservative 0.25kg nudge or an aggressive 1.0kg transformation.
3. Body Recomposition: Building While Burning
The "Holy Grail" of fitness is gaining muscle while losing fat. This requires eating at or slightly below your TDEE while keeping protein levels at their clinical upper limit (2.2g/kg). Our Body Recomposition setting automated this complex math for you.
4. The Protein Protocol
The UltraFit360 engine dynamically adjusts your protein needs based on your specific goal. Higher protein is the single biggest factor in muscle retention during weight loss and satiety. We follow a science-based range of 1.8g to 2.2g per kg of bodyweight:
- Weight Loss: 2.2g/kg (to protect muscle in a deficit).
- Recomposition: 2.0g/kg (to fuel muscle and fat loss simultaneously).
- Bulking & Maintenance: 1.8g/kg (optimal for building lean tissue).
5. Clinical Guardrails
Unlike basic calculators, the UltraFit360 engine includes hard safety stops from our backend code:
- Metabolic Floors: We block calorie levels below 1,500 (men) or 1,200 (women) to prevent hormonal down-regulation.
- Deficit Capping: Deficits are limited to 40% of TDEE. Any lower and your body begins consuming its own muscle tissue for survival.
- Hormonal Health: We maintain fats at a minimum of 0.7g-0.8g/kg to ensure healthy testosterone and estrogen production.
TDEE & Calorie FAQs
What is a TDEE calculator?
A TDEE calculator estimates your Total Daily Energy Expenditure: the calories you burn in a day, including your basal metabolism, digestion, daily movement and exercise. This one first estimates your BMR with the Mifflin-St Jeor equation, then multiplies it by an activity factor between 1.2 and 1.9. Eating at your TDEE keeps your weight stable; eating below it causes weight loss and above it causes gain.
How accurate is TDEE?
A TDEE estimate is a starting point, usually within about 10% of what you really burn. The Mifflin-St Jeor equation predicts BMR within 10% for most adults, and the bigger error usually comes from choosing an activity level that is too high. Eat at the suggested calories for 2–3 weeks, track your average weight, and adjust by 100–200 kcal a day if it moves faster or slower than planned.
How many calories should I eat to lose weight?
Eat about 300–550 kcal a day below your TDEE, which gives roughly 0.25–0.5 kg of loss a week. One kg of body fat holds about 7,700 kcal, so a 550 kcal daily deficit equals about 0.5 kg a week. Do not go below about 1,500 kcal for men or 1,200 kcal for women without medical supervision, and keep protein high to protect muscle.
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the energy your body uses at complete rest just to stay alive: breathing, circulation, organ function. TDEE is BMR plus everything else you do in a day, from walking and work to exercise and digesting food. For most people BMR is 60–70% of TDEE. You should eat based on TDEE, not BMR.
How many calories does an Indian adult need per day?
ICMR-NIN (2020) estimates about 2,110 kcal a day for a sedentary Indian man of 65 kg and 1,660 kcal for a sedentary woman of 55 kg, rising to about 2,710 and 2,130 kcal with moderate activity. Your own needs depend on your weight, height, age and activity, which is why a TDEE calculator gives a more personal number than a national average.
Should I eat back the calories I burn in the gym?
No. The activity level you choose already includes your workouts, so adding gym calories on top counts them twice. Fitness trackers also tend to overestimate exercise burn. Pick the activity level that matches your typical week and adjust based on your weight trend.
Adolescent Nutrition Guide
If you are a teenager or parent calculating needs for a minor, please note that the UltraFit360 engine uses specialized Schofield Equations (WHO-recommended) for users under 18. Growing bodies have unique metabolic demands that generic adult calculators often ignore.
Energy for Growth
Teenagers require an additional "Growth Buffer" of 150–300 calories per day to support bone density development, hormonal changes, and brain growth. Our engine applies this automatically.
Safety Guardrails
We block weight loss goals for children under 16 to protect developmental health. Exception: If a minor has an overweight BMI (>25), our engine allows a controlled, clinical-grade deficit (max 0.5kg/week) focused on healthy body recomposition.