NutriCalc.fit
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to understand your daily calorie needs.
Enter Your Information
BMR is the number of calories your body needs at rest. TDEE includes your daily activities.
Ready to Calculate
BMR is the number of calories your body needs at rest. TDEE includes your daily activities.
About BMR & TDEE
BMR (Basal Metabolic Rate)
The minimum calories needed for basic body functions at rest.
TDEE (Total Daily Energy Expenditure)
BMR multiplied by your activity level factor.
Activity Factors
BMR and TDEE Calculator for Nutrition Professionals
Quickly estimate Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to support personalized meal plans and weight management strategies.
Understanding BMR and TDEE in Clinical Practice
Basal Metabolic Rate (BMR) represents the energy expenditure required to maintain basic physiological functions such as breathing, circulation, and cellular repair at rest.
Total Daily Energy Expenditure (TDEE) adjusts BMR to include calories burned through daily activities and exercise, making it a more comprehensive indicator for dietary planning.
For healthcare and nutrition professionals, these calculations are essential for tailoring caloric intake and setting realistic weight management goals. Accurate assessment of BMR and TDEE helps ensure that interventions are safe and effective.
How to Use This BMR/TDEE Calculator
Enter the patient's weight in kilograms.
Enter the patient's height in centimeters.
Enter the patient's age in years.
Select the patient's sex.
Choose the activity level that best reflects the patient's lifestyle.
Click Calculate to get both the BMR and the TDEE.
Activity Level Factors
| Activity Level | Factor |
|---|---|
| Sedentary (little to no exercise) | 1.2 |
| Lightly active (1–3 days/week) | 1.375 |
| Moderately active (3–5 days/week) | 1.55 |
| Active (6–7 days/week) | 1.725 |
| Very active (hard exercise or physical job) | 1.9 |
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR represents the calories your body needs at rest to maintain essential functions. TDEE includes BMR plus calories burned through daily activities and exercise.
Which equation is used in this calculator?
This calculator uses the revised Harris-Benedict equations, widely adopted in clinical and sports nutrition.
How accurate are BMR and TDEE estimates?
While these estimates are useful for initial planning, individual variations such as muscle mass and metabolic health should be considered. Direct methods like indirect calorimetry are more precise but less practical.
How often should BMR and TDEE be recalculated?
Reassess these values whenever a patient's weight, activity level, or health status changes significantly — typically every few months.
Scientific References
Harris JA, Benedict FG. 'A Biometric Study of Basal Metabolism in Man.' Carnegie Institution of Washington, 1919.
Mifflin MD, et al. 'A new predictive equation for resting energy expenditure in healthy individuals.' American Journal of Clinical Nutrition, 1990.
NIH Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults.