TDEE Calculator: How Many Calories Should You Really Eat Daily?

TDEE Calculator: How Many Calories Should You Really Eat Daily?

By Dr. Marcus Chen, Ph.D.

January 24, 2025 at 02:36 AM

A Total Daily Energy Expenditure (TDEE) calculator helps determine the number of calories you burn daily. This number is crucial for weight management - eat more to gain weight, eat less to lose weight.

Your TDEE depends on several factors:

  • Age
  • Body composition
  • Daily activity level
  • Exercise frequency and intensity

For example, someone working a physical job and training 5 times weekly burns significantly more calories than someone with a desk job training 3 times weekly.

The calculator uses the Mifflin St. Jeor formula, considered the gold standard for calorie calculations:

For men: 10 x weight (kg) + 6.25 x height (cm) – 5 x age (y) + 5

For women: 10 x weight (kg) + 6.25 x height (cm) – 5 x age (y) - 161

This base number (BMR) is then multiplied by an activity factor:

  • Sedentary: 1.2
  • Lightly active: 1.375
  • Moderately active: 1.550
  • Very active: 1.725
  • Extra active: 1.9

Using Your TDEE:

For Weight Loss:

  • Eat 10-20% below your TDEE
  • Example: If TDEE is 2000 calories, eat 1600-1800 calories daily

For Weight Gain:

  • Eat 500 calories above your TDEE
  • Monitor progress and adjust as needed

Important Notes:

  • TDEE calculations are estimates
  • Daily calorie burn varies
  • Track your weight changes and adjust accordingly
  • Combine with appropriate exercise program
  • Consider tracking macronutrients (protein, fats, carbohydrates)

For best results, pair your calorie goals with:

  1. A structured workout program
  2. Proper macronutrient distribution
  3. Consistent tracking
  4. Regular progress assessments

Remember: While TDEE calculators aren't 100% accurate, they provide a reliable starting point for nutrition planning. Adjust your intake based on real-world results over time.

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