Calorie Calculator

Calculate your daily calorie needs.

Calorie Calculator

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Your Weight (kg)

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Calculating Your Daily Calorie Needs

Weight management ultimately comes down to a simple mathematical equation: Energy In vs. Energy Out. The Calorie Calculator above reveals your Total Daily Energy Expenditure (TDEE)—essentially, the fuel your body needs to maintain your current weight. This number is the starting line for your nutrition journey.

👩‍⚕️ DIETITIAN’S NOTE: Counting calories matters, but it isn’t everything. 100 calories of broccoli and 100 calories of sugar create very different hormonal responses in your body. When using this tool, your goal shouldn't just be to "eat less," but to "fuel your body from the right sources."

What are Calories and TDEE?

A calorie is simply a unit of energy we get from food. TDEE (Total Daily Energy Expenditure) is the total energy your body burns in a day to survive, move, digest food, and exercise. To lose weight, you must eat below this number; to gain weight, you must eat above it.

How is Daily Calorie Intake Calculated?

The calculation involves two main steps, which our tool handles automatically using the scientific Mifflin-St Jeor equation:

Basal Metabolic Rate (BMR): The energy you burn doing absolutely nothing—just breathing and keeping your organs running.
Activity Factor: We multiply your BMR by your daily activity level (sedentary job, athlete, etc.) to determine your TDEE.

What Factors Determine Your Calorie Needs?

Why is every nutrition plan unique? Because energy expenditure depends on several variables:

Gender: Men generally have more muscle mass than women, meaning they burn more calories naturally.
Age: As we age, metabolism slows down, and calorie needs decrease.
Muscle Mass: Muscle tissue burns more energy than fat. A muscular person burns more calories even while sleeping.
Genetics & Hormones: Factors like thyroid function can alter the metabolic equation.

How to Use Your Results (Action Plan)

The result the tool gives you is the amount needed to Maintain Your Weight. Based on your specific goal, follow this strategy:

To Lose Weight (Calorie Deficit): Eat roughly 300-500 calories less than the result.
To Gain Weight (Calorie Surplus): Eat roughly 300-500 calories more than the result.
To Build Muscle: Eat at your maintenance level or a slight surplus, but keep your protein intake high.

Common Myths About Calories

The most common mistake is the logic of "It doesn't matter what I eat, as long as I hit my calorie number." Focusing only on calories while ignoring nutrient quality (vitamins, minerals, fiber) might make you lose weight, but it can also lead to sagging skin, hair loss, and a wrecked metabolism. Quality calories keep you full and support fat burning.

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Frequently Asked Questions

How many calories should I eat to lose weight?

For healthy, sustainable weight loss, aim for about 500 calories below your TDEE (the number from the calculator). For example, if your daily need is 2,000 calories, eating 1,500 calories is ideal for fat loss.

How do you calculate a calorie deficit?

The formula is: (Calories Burned) - (Calories Eaten) = Deficit. If you burn 2,200 calories in a day but only eat 1,700, you have created a 500-calorie deficit. This gap forces the body to burn stored fat for energy.

What is the minimum calorie intake for a person?

While it varies by individual, the general medical rule is not to drop below 1,200 calories for women and 1,500 for men. Going lower puts you in "crash diet" territory, which can stall your metabolism and cause muscle loss.

How many calories do I need to lose 1 kg in 3 days?

Scientifically, burning 1 kg of fat requires a total deficit of about 7,700 calories. To lose that in 3 days, you’d need an impossible deficit of over 2,500 calories per day. Rapid weight loss like this usually comes from water and muscle, not fat. It is not healthy.

Is 1500 calories enough to lose weight?

For the average person, yes, 1,500 is often a weight-loss range. However, if you are very active or a larger male, 1,500 might be too low, leading to hunger pangs and bingeing. Always use the calculator to find your specific number.

How many calories must be burned to lose 5 kg?

Since 1 kg of body fat is roughly 7,700 calories, losing 5 kg requires a total deficit of 38,500 calories. At a healthy pace (0.5–1 kg per week), this usually takes 5 to 10 weeks depending on your daily deficit.

How many calories does a 30-minute walk burn?

It depends on your weight and pace, but a brisk 30-minute walk burns an average of 120–170 calories. Increasing your speed or walking uphill will increase this number.

What is TDEE?

TDEE stands for Total Daily Energy Expenditure. It is the sum of all calories your body burns in 24 hours—while sleeping, working, eating, and exercising. It is the exact number of calories you need to maintain your current weight.

I’m eating very little but not losing weight. Why?

Eating too little (e.g., 800–1,000 calories) can send your body into "starvation mode," slowing down your metabolism to hoard energy. Your body stops burning fat to survive. Alternatively, uncounted snacks or weekend "cheat meals" might be accidentally erasing your calorie deficit.

Is calorie counting enough for a healthy diet?

No. You could lose weight eating 1,500 calories of potato chips, but you would destroy your health. What matters is Macro Balance—how much of those calories come from protein, healthy fats, and complex carbohydrates.

Calorie Calculator