Basal Metabolic Rate (BMR) & Calorie Calculator

Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation and determine total daily energy expenditure (TDEE) based on activity level.

kg
cm
BMR (Calories burned at complete rest)
Maintenance Calories (TDEE)
Calories for Mild Weight Loss (-500 kcal)
Calories for Muscle Gain (+500 kcal)

About the Basal Metabolic Rate (BMR) & Calorie Calculator

Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation and determine total daily energy expenditure (TDEE) based on activity level.

Designed for high computational precision and rapid evaluation, this tool provides real-time results based on validated mathematical and engineering principles. Whether you are conducting quick everyday calculations or preparing detailed professional estimates, input your parameters above to receive instantaneous verified numbers.

Calculation Formula & Methodology

The underlying calculation applies the following formula:

Mifflin-St Jeor: BMR = 10W + 6.25H — 5A + s (s=+5 for men, -161 for women)

How to Use This Utility

  1. Biological Sex: Adjust or specify the value for this input parameter according to your requirements.
  2. Age (years): Adjust or specify the value for this input parameter according to your requirements.
  3. Weight (kg): Adjust or specify the value for this input parameter according to your requirements.
  4. Height (cm): Adjust or specify the value for this input parameter according to your requirements.
  5. Physical Activity Level: Adjust or specify the value for this input parameter according to your requirements.
  6. Review Outputs: The computation is performed immediately, and the verified outputs are rendered in the results column.

Frequently Asked Questions (FAQ)

What is BMR?

Basal Metabolic Rate (BMR) is the minimum amount of energy (calories) expended while at rest in a neutrally temperate environment.