Como Calcular Las Calorías Que Necesito Para Bajar De Peso

Losing weight requires a calorie deficit, which means consuming fewer calories than your body burns. To create this deficit safely and effectively, you need to calculate your Total Daily Energy Expenditure (TDEE) and then reduce your calorie intake by 300-500 calories per day.

How to Calculate Calories for Weight Loss

Calculating your calorie needs involves several steps:

Determine your Basal Metabolic Rate (BMR)
Calculate your Total Daily Energy Expenditure (TDEE)
Create a calorie deficit by reducing your intake
Monitor your progress and adjust as needed

Remember that individual results may vary. Consult with a healthcare professional before starting any weight loss program.

The Formula Explained

The most commonly used formula for calculating BMR 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, you can calculate your TDEE by multiplying it by an activity factor:

Activity Level	Multiplier
Sedentary (little or no exercise)	1.2
Lightly active (light exercise 1-3 days/week)	1.375
Moderately active (moderate exercise 3-5 days/week)	1.55
Very active (hard exercise 6-7 days/week)	1.725
Extra active (very hard exercise or physical job)	1.9

Worked Example

Let's calculate the calories needed for a 30-year-old woman who is 165 cm tall, weighs 68 kg, and has a moderately active lifestyle.

Calculate BMR: (10 × 68) + (6.25 × 165) - (5 × 30) - 161 = 680 + 1031.25 - 150 - 161 = 1400.25 kcal/day
Calculate TDEE: 1400.25 × 1.55 = 2170.375 kcal/day
Create a deficit: 2170.375 - 500 = 1670.375 kcal/day

This woman should aim to consume approximately 1670 calories per day to lose weight safely.

Interpreting Your Results

Your TDEE calculation gives you a starting point, but remember:

Individual results may vary
Muscle mass affects calorie needs more than fat
Hormonal changes can impact metabolism
Weight loss plateaus are normal and expected

It's important to track your progress and adjust your calorie intake as needed. If you're not losing weight after several weeks, you may need to reduce your intake further or increase your activity level.

Frequently Asked Questions

How many calories should I eat to lose weight?

The general recommendation is to create a deficit of 300-500 calories per day. This means eating 300-500 calories fewer than your TDEE calculation.

Is it safe to eat 1200 calories a day?

Eating 1200 calories a day is extremely low and not recommended for most people. It can lead to nutrient deficiencies, muscle loss, and other health problems. Always consult with a healthcare professional before starting any weight loss program.

How long does it take to see results?

Most people see noticeable weight loss within 1-2 weeks of starting a calorie-controlled diet. However, significant fat loss typically takes 3-6 months of consistent effort.

Can I lose weight without counting calories?

While it's possible to lose weight without counting calories, it's much more difficult. Tracking your intake helps ensure you're creating a consistent deficit and not consuming too many calories.