Metabolic Rate Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation. Input your age, gender, weight, height, and activity level to estimate daily calorie needs.
Published by:
isCalculator Editorial Team
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How to Use the Metabolic Rate Calculator
This calculator estimates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation. All inputs use metric units (kg, cm).
- Enter your age (10–120 years).
- Select your gender (Male or Female).
- Enter your weight in kilograms (20–500 kg).
- Enter your height in centimeters (50–300 cm).
- Choose your activity level from the dropdown (e.g., Sedentary, Moderately active).
- Click "Calculate" to see your results.
Results: Your BMR (calories burned at rest) and TDEE (total daily calories burned) will appear below. The formula used is also displayed for transparency.
Previous Results
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Frequently Asked Questions
Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions like breathing, circulation, and cell production while at rest.
Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, including physical activity. It is calculated by multiplying your BMR by an activity factor.
The Mifflin-St Jeor equation is considered one of the most accurate BMR formulas for the general population, with an accuracy of about 85-90% in most individuals.
