🔥 Calorie Calculator

Calculate your daily calorie needs based on age, gender, weight, height, and activity level. Get instant TDEE, BMR, and personalized recommendations for your fitness goals.

📊 Enter Your Details

Age (years)

Gender

👨 Male

👩 Female

Weight

Weight Unit

Height

Height Unit

Activity Level

Sedentary Little or no exercise, desk job

Lightly Active Light exercise 1-3 days/week

Moderately Active Moderate exercise 3-5 days/week

Very Active Hard exercise 6-7 days/week

Extra Active Very hard exercise, physical job or training 2x/day

💡 Pro Tip: Be honest about your activity level. Most people overestimate. If you work a desk job and exercise 3-4 times a week, you're likely "Lightly Active" or "Moderately Active," not "Very Active."

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BMR (Calories)

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TDEE (Cal/day)

📈 Your Calorie Goals

🔻

Extreme Loss

—

-1 kg/week

📉

Weight Loss

—

-0.5 kg/week

⚖️

Maintenance

—

No change

📈

Weight Gain

—

+0.5 kg/week

🔧 Related Tools

📖 How to Use Calorie Calculator

Enter Personal DetailsInput your age, gender, current weight, and height. Choose between metric (kg/cm) or imperial (lbs/inches) units for convenience.

Select Activity LevelChoose your daily activity level from sedentary to extra active. Be honest—most people overestimate their activity. This factor significantly impacts your TDEE calculation.

Calculate ResultsClick "Calculate Calories" to instantly get your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure) based on scientifically validated formulas.

Review Calorie GoalsSee personalized calorie recommendations for extreme weight loss, moderate weight loss, maintenance, and weight gain. Choose the goal that aligns with your fitness objectives.

❓ Frequently Asked Questions

What is a calorie calculator and how does it work? ▼

A calorie calculator is a tool that estimates your daily caloric needs based on personal factors like age, gender, weight, height, and activity level. It uses scientifically validated formulas (like Mifflin-St Jeor) to calculate your BMR (calories burned at rest) and multiplies it by an activity factor to determine your TDEE (total daily energy expenditure). This helps you understand how many calories you need to maintain, lose, or gain weight.

How accurate is this calorie calculator? ▼

Our calculator uses the Mifflin-St Jeor equation, which is considered one of the most accurate formulas for estimating calorie needs, with approximately 90% accuracy for most people. However, individual metabolism can vary by 10-15% from calculated values due to genetics, muscle mass, hormones, and other factors. Use the results as a starting point and adjust based on your actual progress over 2-3 weeks of tracking weight and energy levels.

What is the difference between BMR and TDEE? ▼

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest just to maintain vital functions like breathing, circulation, and cell production. It represents about 60-75% of your total daily calorie burn. TDEE (Total Daily Energy Expenditure) is your BMR multiplied by an activity factor, representing the total calories you burn in a day including all physical activities, digestion, and non-exercise movement. TDEE is what you should use to plan your calorie intake.

How many calories should I eat to lose weight? ▼

For healthy weight loss, create a calorie deficit of 500 calories per day below your TDEE to lose approximately 0.5 kg (1 lb) per week, or 1000 calories for 1 kg (2 lbs) per week. Our calculator shows these as 'Weight Loss' and 'Extreme Loss' recommendations. Never go below 1200 calories for women or 1500 for men without medical supervision, as this can slow metabolism and cause nutrient deficiencies. Combine calorie reduction with protein intake and strength training to preserve muscle mass.

Can I use this calculator for weight gain and muscle building? ▼

Yes! To gain weight, you need a calorie surplus. Our calculator provides 'Weight Gain' recommendations with an additional 500 calories above your TDEE for approximately 0.5 kg (1 lb) gain per week. For healthy muscle gain rather than just fat, combine this surplus with a structured strength training program 3-5 times per week and ensure adequate protein intake (1.6-2.2g per kg of body weight). Track your progress and adjust if you're gaining too much fat versus muscle.

How often should I recalculate my calorie needs? ▼

Recalculate your calorie needs every 2-4 weeks or whenever you lose/gain 2-3 kg of weight, as your BMR changes with body weight—lighter bodies require fewer calories. Also recalculate if your activity level changes significantly, such as starting a new exercise program, changing jobs, or recovering from illness. If your weight plateaus for more than 2 weeks despite following your calorie target, it may be time to recalculate and adjust your intake accordingly.

📚 About Calorie Calculator

The Calorie Calculator is a free online tool designed to help individuals determine their daily caloric needs based on personal factors including age, gender, weight, height, and physical activity level. Whether you're looking to lose weight, gain muscle, or maintain your current physique, understanding your calorie requirements is the foundation of any successful nutrition plan. This calculator uses scientifically validated formulas to provide accurate estimates of your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE), giving you the information you need to make informed decisions about your diet and fitness goals.

Our calorie calculator is trusted by fitness enthusiasts, athletes, nutritionists, and anyone interested in managing their weight effectively. It eliminates the guesswork from calorie counting by providing personalized recommendations based on your unique metabolic profile. The tool is completely free, requires no registration, and delivers instant results that you can use immediately to plan your meals and track your nutritional intake. Whether you're in India, USA, UK, Australia, or anywhere else in the world, this calculator adapts to both metric and imperial measurement systems for your convenience.

Key Features

Our Calorie Calculator stands out with several powerful features. It uses the Mifflin-St Jeor equation, the gold standard for BMR calculation and more accurate than older formulas like Harris-Benedict. The calculator provides five distinct activity levels—from sedentary to extra active—ensuring precise TDEE calculations that reflect your actual lifestyle. You'll receive four different calorie targets: extreme weight loss (-1000 cal), moderate weight loss (-500 cal), maintenance (TDEE), and weight gain (+500 cal), allowing you to choose the approach that aligns with your goals. The interface supports both metric and imperial units, making it accessible worldwide. Real-time calculations mean instant results, and the tool is completely privacy-focused—all calculations happen in your browser without storing or transmitting personal data.

Use Cases

The Calorie Calculator serves a wide range of users with different fitness and health goals. For individuals seeking weight loss, this tool is essential for creating a sustainable calorie deficit that promotes fat loss while preserving muscle mass and energy levels. Fitness enthusiasts and bodybuilders use it to calculate precise calorie targets for bulking (muscle gain) or cutting (fat loss) phases. Athletes rely on the calculator to fuel their performance by matching calorie intake to their high energy expenditure. Nutritionists and dietitians use this calculator as a starting point when creating meal plans for clients. People maintaining their weight find it valuable for ensuring they're eating the right amount. In India, this calculator helps users adapt traditional diets to modern fitness goals. In the USA, users apply it to manage portion sizes in a calorie-dense food environment. The calculator is also invaluable for those recovering from eating disorders under professional supervision, elderly individuals preventing muscle loss, and teenagers developing healthy eating habits.

How the Calculation Works

Our Calorie Calculator uses the Mifflin-St Jeor equation, developed in 1990 and validated as the most accurate predictor of resting metabolic rate. The formula differs for men and women to account for body composition differences. For men, BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5. For women, BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161. This accounts for metabolism decreasing with age and men typically having higher metabolic rates due to greater muscle mass. Once BMR is calculated, we multiply it by an activity factor to determine TDEE. Activity factors are: Sedentary (1.2), Lightly Active (1.375), Moderately Active (1.55), Very Active (1.725), and Extra Active (1.9). From your TDEE, we derive calorie goals using scientifically supported deficits and surpluses. A 500-calorie daily deficit theoretically results in approximately 0.5 kg fat loss per week, since 1 pound of fat contains roughly 3500 calories.