Calories Calculator

The Atlasaro Calories Calculator helps you estimate how many calories your body needs each day based on your age, gender, height, weight, and activity level.

The calculator uses the internationally recognized Mifflin-St Jeor Equation, one of the most accurate methods for estimating Basal Metabolic Rate (BMR).

After calculating your BMR, the calculator adjusts the result according to your activity level to estimate your Total Daily Energy Expenditure (TDEE).

What Is a Calories Calculator?

A Calories Calculator estimates how many calories your body burns during a typical day.

Knowing your daily calorie needs can help you:

• Lose weight
• Maintain your current weight
• Build muscle
• Improve athletic performance
• Plan a healthy diet

How to Use

Using the calculator only takes a few seconds.

Step 1

Select your gender.

Step 2

Enter your:

• Age
• Height
• Weight

Step 3

Choose your activity level.

Step 4

Click Calculate Calories.

The calculator instantly shows:

• Calories needed to maintain weight
• Calories for weight loss
• Calories for healthy weight gain

Activity Levels Explained

Sedentary

Little or no exercise.

Light Exercise

Exercise 1–3 days per week.

Moderate Exercise

Exercise 3–5 days per week.

Heavy Exercise

Exercise 6–7 days per week.

Athlete

Very intense daily training or physical work.

Mifflin-St Jeor Equation

For men:

BMR = 10 × weight + 6.25 × height − 5 × age + 5

For women:

BMR = 10 × weight + 6.25 × height − 5 × age − 161

The calculator then multiplies your BMR by your activity level to determine your Total Daily Energy Expenditure (TDEE).

Calorie Recommendations

Weight Loss

A daily calorie deficit of approximately 500 calories may help most people lose around 0.5 kg (1 lb) per week.

Weight Maintenance

Eating close to your maintenance calories helps keep your weight stable.

Muscle Gain

A moderate calorie surplus can support muscle growth when combined with resistance training.

Important Note

This calculator provides an estimate only.

Your actual calorie needs may vary depending on:

• Body composition
• Genetics
• Hormones
• Medical conditions
• Training intensity

For personalized advice, consult a registered dietitian or healthcare professional.

Frequently Asked Questions

Which formula does this calculator use?

It uses the Mifflin-St Jeor Equation, considered one of the most accurate methods for estimating daily calorie needs.

Is this calculator accurate?

It provides a reliable estimate for most healthy adults.

Can I use it for weight loss?

Yes.

It calculates approximately 500 calories below maintenance, which is commonly used for gradual weight loss.

Can athletes use this calculator?

Yes.

However, athletes may require additional adjustments depending on training volume.

Is this Calories Calculator free?

Yes.

It is completely free and works on desktop, tablet, and mobile devices.

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