Free BMR Calculator

Calculate your Basal Metabolic Rate (BMR) - the number of calories your body needs at complete rest.

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Understanding BMR

Your Basal Metabolic Rate (BMR) represents the minimum amount of energy your body needs to perform essential functions while at complete rest. These functions include:

  • Breathing and circulation
  • Cell production and growth
  • Brain and nerve function
  • Temperature regulation
  • Hormone regulation

BMR typically accounts for 60-70% of your total daily calorie expenditure, making it the largest component of your metabolism.

Factors Affecting BMR

  • Age: BMR decreases as you age
  • Body composition: Muscle burns more calories than fat
  • Gender: Men typically have higher BMRs than women
  • Genetics: Some people naturally have faster metabolisms
  • Hormones: Thyroid issues can significantly impact BMR

Remember that BMR is just one component of your total energy expenditure. To determine your complete calorie needs, you need to account for physical activity and the thermic effect of food.

Important Note

This calculator provides an estimate based on formulas. Your actual BMR may vary based on individual factors. For more precise measurements, consider consulting with a healthcare professional.

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