Calorie Calculator
Calculate your daily calorie needs based on your activity level and goals
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Understanding Your Results
BMR (Basal Metabolic Rate): The number of calories your body burns at rest.
TDEE (Total Daily Energy Expenditure): Total calories burned per day including activity.
Target Calories: Recommended daily calorie intake based on your goal.
Note: These are estimates. Individual needs may vary. Consult a healthcare professional for personalized advice.
Your Results
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Est. Results
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How Daily Calorie Needs are Calculated?
Your daily calorie needs are calculated using two key metrics: BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure). BMR represents calories burned at rest, while TDEE includes calories burned through physical activity and daily movement.
TDEE = BMR × Activity Multiplier
Target Calories = TDEE ± Goal Adjustment
Where:
- BMR = Basal Metabolic Rate (calculated using Mifflin-St Jeor equation)
- Activity Multiplier = Sedentary (1.2), Light (1.375), Moderate (1.55), Active (1.725), Very Active (1.9)
- Goal Adjustment = -500 for weight loss, +500 for weight gain, 0 for maintenance
Example:
Let's calculate daily calorie needs for a 30-year-old woman who weighs 65 kg, is 165 cm tall, has a moderate activity level, and wants to maintain her weight.
Given: W = 65 kg, H = 165 cm, A = 30 years, Gender = Female, Activity = Moderate (1.55x), Goal = Maintain
Step 1: Calculate BMR
BMR = (10 × 65) + (6.25 × 165) - (5 × 30) - 161
BMR = 650 + 1,031.25 - 150 - 161
BMR = 1,370.25 calories/day
Step 2: Calculate TDEE
TDEE = BMR × Activity Multiplier
TDEE = 1,370.25 × 1.55
TDEE = 2,123.89 calories/day
Step 3: Calculate Target Calories (for maintenance)
Target Calories = TDEE + Goal Adjustment
Target Calories = 2,123.89 + 0 (maintenance)
Target Calories = 2,124 calories/day
Result: This person needs approximately 2,124 calories per day to maintain her current weight with moderate activity level.
BMR Formula: For Men: BMR = (10 × W) + (6.25 × H) - (5 × A) + 5
For Women: BMR = (10 × W) + (6.25 × H) - (5 × A) - 161
Where W = Weight (kg), H = Height (cm), A = Age (years)
Activity multipliers account for your daily physical activity: Sedentary (1.2x), Light (1.375x), Moderate (1.55x), Active (1.725x), and Very Active (1.9x). These multipliers help estimate your total daily calorie burn.
Use Cases for Calorie Calculator
Weight Loss Planning
Calculate optimal calorie deficit for safe and sustainable weight loss
Muscle Building
Determine calorie surplus needed for muscle gain while minimizing fat gain
Weight Maintenance
Find the exact calorie intake to maintain your current weight
Meal Planning
Plan daily meals and snacks to meet your calorie goals
Fitness Tracking
Monitor calorie intake vs expenditure for fitness goals
Health Management
Ensure adequate nutrition for optimal health and energy levels
Benefits of Knowing Your Daily Calorie Needs
Precise Goal Achievement
Know exactly how many calories to eat for your specific weight goals.
Sustainable Weight Loss
Create a moderate calorie deficit that's maintainable long-term.
Prevent Metabolic Slowdown
Avoid eating too few calories which can slow metabolism and hinder progress.
Optimize Energy Levels
Ensure adequate calorie intake to maintain energy for daily activities and workouts.
Activity-Based Planning
Adjust calories based on your actual activity level for accurate results.
Personalized Nutrition
Get calorie recommendations tailored to your age, gender, size, and activity level.
Calorie Calculator FAQs
❓What's the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through physical activity, exercise, and daily movement. TDEE is what you should use for meal planning.
❓How many calories should I eat to lose weight?
For safe weight loss, aim for a 500-calorie deficit per day, which typically results in about 1 pound (0.45 kg) of weight loss per week. Never eat below your BMR without medical supervision, as this can slow your metabolism.
❓What activity level should I select?
Choose based on your typical week: Sedentary (desk job, no exercise), Light (1-3 days/week), Moderate (3-5 days/week), Active (6-7 days/week), or Very Active (hard exercise daily or physical job). Be honest for accurate results.
❓Can I use this for muscle building?
Yes! Select "Gain Weight" to get a calorie surplus. Typically, a 300-500 calorie surplus above TDEE is recommended for muscle building while minimizing fat gain. Combine with strength training for best results.
❓Why is my TDEE higher than my BMR?
TDEE is always higher than BMR because it includes calories burned through daily activities, exercise, and the thermic effect of food (calories burned digesting food). BMR only accounts for basic bodily functions at rest.
❓Is this calorie calculator free?
Yes, our calorie calculator is completely free to use with no registration required. You can recalculate as your activity level or goals change.