Calorie Calculator: How to Find Your TDEE and Daily Calorie Needs

Quick Answer

Your daily calorie need (TDEE) = BMR x activity multiplier. For weight loss, eat 500 calories below TDEE to lose about 0.5 kg per week. A moderately active 70kg man typically needs 2,400-2,700 calories daily to maintain weight; a moderately active 60kg woman needs about 1,900-2,100.

Calorie Calculator (TDEE) Guide: How to Find Your Daily Calorie Needs

Accurate calorie calculation is the foundation of any body composition goal — whether fat loss, muscle gain, or maintenance. This guide explains BMR, TDEE, activity multipliers, and how to set effective calorie targets.

BMR: Your Resting Calorie Burn

BMR (Basal Metabolic Rate) is calories your body burns at complete rest — maintaining heartbeat, breathing, body temperature, and organ function. It accounts for 60-70% of total daily calorie burn.

Mifflin-St Jeor formula (most accurate): For men, BMR = (10 times weight in kg) + (6.25 times height in cm) minus (5 times age) + 5. For women, BMR = (10 times weight in kg) + (6.25 times height in cm) minus (5 times age) minus 161.

Example (male, 28 years, 70kg, 175cm): BMR = (700) + (1094) minus (140) + 5 = 1,659 calories per day.

TDEE: Total Daily Energy Expenditure

TDEE multiplies BMR by an activity factor to estimate actual daily calorie burn.

Activity multipliers: Sedentary (desk job, no exercise) = 1.2. Lightly active (1-3 workouts per week) = 1.375. Moderately active (3-5 workouts per week) = 1.55. Very active (6-7 days per week) = 1.725. Extra active (physical job plus training) = 1.9.

Continuing example: TDEE = 1,659 times 1.55 = 2,571 calories per day to maintain current weight.

Calorie Targets by Goal

For fat loss: eat 300-500 calories below TDEE. A 500-calorie daily deficit produces approximately 0.5kg fat loss per week. Never go below 1,200 calories (women) or 1,500 calories (men) without medical supervision — severe restriction causes muscle loss, metabolic adaptation, and nutritional deficiencies.

For muscle gain: eat 200-300 calories above TDEE. Too small a surplus provides insufficient energy for muscle synthesis. Too large a surplus (500+ calories) leads to excess fat gain without proportional muscle gain.

For maintenance: eat at TDEE. Track for 2-4 weeks and adjust by 100-200 calories if weight trends in either direction.

Macronutrient Targets

Protein (most important for body composition): 2.0-2.4g per kg bodyweight for fat loss (high protein preserves muscle during calorie deficit). 1.6-2.2g per kg for muscle gain. 1 gram of protein provides 4 calories.

Fat (essential for hormones): minimum 0.8g per kg bodyweight. Recommended 25-35% of total calories. 1 gram of fat provides 9 calories.

Carbohydrates (remaining calories): fuel for training and brain function. 1 gram of carbs provides 4 calories.

Example for 70kg male at 2,071 calorie fat loss target: Protein 154g = 616 calories. Fat 70g = 630 calories. Carbs 206g = 825 calories. Total = 2,071 calories.

Common Indian Foods Calorie Reference

Cooked white rice one cup (200g): 260 calories, 5g protein. Roti one medium (40g): 100 calories, 3g protein. Dal toor or chana one cup cooked: 230 calories, 15g protein. Paneer 100g: 265 calories, 18g protein. Chicken breast 100g grilled: 165 calories, 31g protein. Egg whole large: 72 calories, 6g protein. Full-fat milk 240ml: 150 calories, 8g protein. Banana medium: 105 calories, 1g protein. Ghee 1 tablespoon: 130 calories, 0g protein.

Accuracy Limitations

TDEE calculators estimate within 10-15% for most people. Variation comes from NEAT (non-exercise activity thermogenesis — fidgeting, walking, daily movement) which varies by 300-700 calories per day between individuals, metabolic adaptation from sustained deficits (BMR drops 10-20%), and gut microbiome differences affecting calorie absorption.

Practical approach: Use the calculator as a starting point. Track your actual weight weekly for 2 weeks. If weight is not changing as expected, adjust by 100-200 calories and reassess.