Calorie & TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR). Plan daily caloric intake for weight loss or muscle gain.
Caloric Targets For Fitness Goals
Macro Split Suggestion
To maintain muscle mass while losing weight, aim to get 30% of your daily calories from protein, 40% from complex carbohydrates, and 30% from healthy fats.What Your BMR Result Means
| Activity Level | Multiplier | Total Daily Calories |
|---|---|---|
| Sedentary (desk) | 1.2 | BMR × 1.2 |
| Light exercise 1-3x | 1.375 | BMR × 1.375 |
| Moderate 3-5x/week | 1.55 | BMR × 1.55 |
| Heavy exercise 6-7x | 1.725 | BMR × 1.725 |
| Athlete/2x daily | 1.9 | BMR × 1.9 |
BMR vs TDEE vs BMI — Differences
BMR
Calories needed if you stayed in bed all day
TDEE
Actual calories your body burns based on activity
BMI
Weight relative to height — does NOT measure fitness
Weight Loss Calorie Formula
The fundamental rule of weight loss is Calories In < Calories Out.
- Maintenance (TDEE): Maintain your current weight.
- Mild Weight Loss (-10% to 15%): A deficit of 250-300 kcal/day leads to a gradual, sustainable loss of ~0.25 kg/week.
- Standard Weight Loss (-20% to 25%): A deficit of 500 kcal/day leads to a standard loss of ~0.5 kg/week.
- Extreme Weight Loss (-30%+): Not recommended without medical supervision. Can lead to muscle loss and nutrient deficiencies.
Indian Context: Metabolism & Diet
Studies suggest that the Indian population, on average, may have slightly different metabolic profiles compared to Western populations due to genetic and dietary factors.
Traditional Indian diets are predominantly carbohydrate-heavy (rice, roti) and sometimes lower in lean protein. When calculating calories for weight loss, ensuring an adequate protein intake (approx 0.8g to 1g per kg of body weight) is crucial to prevent muscle loss.
Frequently Asked Questions
Is a higher or lower BMR better?
Higher BMR means you burn more calories at rest, making weight management easier. Lower BMR means you need fewer calories to survive, which makes weight loss harder.
Can I increase my BMR?
Yes. Muscle tissue is metabolically active and burns more calories than fat. Strength training increases muscle mass, which permanently increases your BMR over time.
BMR vs TDEE — which should I use for weight loss?
Use TDEE. Your TDEE includes your activity level. Subtract 300-500 calories from your TDEE for safe, sustainable weight loss.
What happens if I eat below my BMR?
Eating below your BMR (Basal Metabolic Rate) long-term is dangerous. Your body will enter 'starvation mode', slowing down metabolism, burning muscle for energy, and impairing basic organ functions.
Why is the Mifflin-St Jeor equation used?
The Mifflin-St Jeor equation is considered by dieticians and fitness professionals to be the most accurate standard formula for estimating BMR in modern populations, replacing the older Harris-Benedict equation.
Does drinking water increase BMR?
Drinking cold water can temporarily boost metabolism slightly (water-induced thermogenesis), but it does not permanently change your BMR. However, staying hydrated is crucial for overall metabolic health.
How often should I recalculate my BMR?
Recalculate your BMR for every 2-3 kg of weight you lose or gain, or if your daily physical activity level changes significantly. As you lose weight, your BMR will naturally decrease.
Are macro ratios important for weight loss?
Total calories matter most for weight loss. However, macronutrients matter for body composition. High protein helps retain muscle, while carbs and fats provide energy. A common split is 30% protein, 40% carbs, 30% fats.
Frequently Asked Questions
What is BMR and TDEE?
BMR (Basal Metabolic Rate) is the number of calories your body burns at rest to maintain vital functions like breathing, circulation, and cell production. TDEE (Total Daily Energy Expenditure) is the total number of calories you burn per day, including BMR plus physical activity.
How does this tool calculate BMR?
This calculator uses the Mifflin-St Jeor Equation, which is currently regarded by dieticians and fitness professionals as the most accurate standard formula for estimating BMR. It takes into account your gender, age, height, and weight.
How do I use these numbers for weight loss?
To lose weight, you must create a caloric deficit. Consuming 500 calories less than your TDEE (maintenance calories) per day typically leads to about 0.5 kg (1 lb) of fat loss per week. Consuming 250 calories less leads to 0.25 kg loss per week.
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