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Cuantas Calorias Debo Consumir Para Bajar De Peso Calcular

Reviewed by Calculator Editorial Team

Losing weight requires careful management of your calorie intake. Our calculator helps you determine the optimal number of calories to consume daily to achieve your weight loss goals safely and effectively.

How to Calculate Calories for Weight Loss

To determine how many calories you should consume to lose weight, you need to consider several factors including your Total Daily Energy Expenditure (TDEE), your weight loss goal, and your activity level. The general approach is:

  1. Calculate your Basal Metabolic Rate (BMR) - the number of calories your body needs at rest
  2. Adjust for your activity level to get your TDEE
  3. Create a calorie deficit by consuming fewer calories than your TDEE
  4. Monitor your progress and adjust as needed

Our calculator simplifies this process by using standard formulas and allowing you to input your specific details.

The Formula Explained

The most commonly used formula for calculating calorie needs is the Mifflin-St Jeor Equation:

For Men:

BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5

For Women:

BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161

Once you have your BMR, multiply it by an activity factor to get your TDEE:

  • Sedentary: BMR × 1.2
  • Lightly active: BMR × 1.375
  • Moderately active: BMR × 1.55
  • Very active: BMR × 1.725
  • Extra active: BMR × 1.9

To lose weight, create a calorie deficit by consuming 500-1000 calories less than your TDEE per day.

Key Factors Affecting Calorie Needs

Several factors influence how many calories you should consume to lose weight:

  1. Gender: Women generally have lower calorie needs than men of the same height and weight
  2. Age: Calorie needs decrease with age
  3. Activity Level: More active individuals require more calories
  4. Muscle Mass: Muscle tissue burns more calories than fat
  5. Body Composition: People with higher body fat percentages may need more calories
  6. Goal: Different weight loss goals require different calorie deficits

Important Note

While our calculator provides a good estimate, individual results may vary. Always consult with a healthcare professional before making significant changes to your diet.

Worked Example

Let's calculate the calories needed for a 30-year-old woman who is 165 cm tall, weighs 60 kg, and is moderately active:

  1. Calculate BMR: (10 × 60) + (6.25 × 165) - (5 × 30) - 161 = 600 + 1031.25 - 150 - 161 = 1320.25 kcal
  2. Calculate TDEE: 1320.25 × 1.55 = 2051.39 kcal
  3. Create a 500 kcal deficit: 2051.39 - 500 = 1551.39 kcal/day

This woman should consume approximately 1551 calories per day to lose weight while maintaining her activity level.

Frequently Asked Questions

How quickly can I lose weight with this method?

With a 500 kcal/day deficit, you can expect to lose about 0.5-1 kg per week. More aggressive deficits may lead to faster weight loss but can be harder to maintain.

Is it safe to create a large calorie deficit?

Large deficits (over 1000 kcal/day) can be unsafe and may lead to muscle loss, nutrient deficiencies, and metabolic slowdown. Always consult a healthcare professional.

How long should I maintain this calorie intake?

For sustainable weight loss, maintain your calorie deficit for at least 3-6 months to see long-term results. After that, you may need to adjust your intake.