Cuantas Calorías Debo Consumir Para Bajar De Peso Calculadora

Losing weight requires creating a calorie deficit, which means burning more calories than you consume. This calculator helps you determine how many calories you should eat daily to achieve a safe and sustainable weight loss goal.

How to Use This Calculator

To get accurate results, follow these steps:

Enter your current weight in kilograms
Enter your height in centimeters
Select your age group
Choose your activity level
Select your weight loss goal (0.5 kg or 1 kg per week)
Click "Calculate" to see your recommended daily calorie intake

The calculator uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR) and then adjusts for your activity level and weight loss goal.

Understanding Calorie Deficit

A calorie deficit occurs when you consume fewer calories than your body needs to maintain its current weight. For weight loss, you need to create a deficit of about 500-750 calories per day.

There are two main approaches to creating a calorie deficit:

Reducing calorie intake: Eating smaller portions or choosing lower-calorie foods
Increasing physical activity: Exercising more to burn additional calories

For sustainable weight loss, it's important to create a deficit that's not too large, as this can lead to muscle loss and other health issues.

The Formula Explained

The calculator uses the following formula to estimate your daily calorie needs:

Calories for Weight Loss

Daily Calories = (BMR × Activity Factor) - Calorie Deficit

Where:

BMR = Basal Metabolic Rate (calculated using Mifflin-St Jeor equation)
Activity Factor = Multiplier based on your activity level
Calorie Deficit = 500 or 750 calories per day for your weight loss goal

The Mifflin-St Jeor equation for BMR is:

Mifflin-St Jeor Equation

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

Worked Example

Let's calculate the recommended daily calorie intake for a 30-year-old woman who weighs 70 kg, is 165 cm tall, is moderately active, and wants to lose 0.5 kg per week.

Calculate BMR using the Mifflin-St Jeor equation:
BMR = (10 × 70) + (6.25 × 165) - (5 × 30) - 161 = 700 + 1031.25 - 150 - 161 = 1420.25 kcal
Determine activity factor (moderately active = 1.55)
Calculate total daily calories:
Total Calories = 1420.25 × 1.55 = 2204.34 kcal
Subtract calorie deficit (500 kcal for 0.5 kg loss):
Daily Calories = 2204.34 - 500 = 1704.34 kcal

Therefore, this woman should consume approximately 1,704 calories per day to lose 0.5 kg per week.

Frequently Asked Questions

How accurate is this calculator?

The calculator provides an estimate based on standard formulas. Individual results may vary due to factors like muscle mass, metabolism, and activity patterns.

Can I lose weight without a calorie deficit?

No, weight loss requires a calorie deficit. Without one, your body will maintain its current weight. However, the deficit should be created in a healthy way through diet and exercise.

How long does it take to see results?

Visible weight loss typically occurs after 1-2 weeks of a consistent calorie deficit. However, fat loss and muscle changes may take longer to show.

Is it safe to create a large calorie deficit?

Large deficits (more than 1,000 calories per day) can lead to muscle loss, nutrient deficiencies, and metabolic slowdown. It's safer to create smaller, sustainable deficits.