Basal Metabolic Rate Calculator

Calculate your Basal Metabolic Rate (BMR) to estimate the number of calories you need to maintain your weight. This calculator uses the Mifflin-St Jeor equation for accuracy.

Input Parameters

Calculation Results

Calculation Formula

For Men: BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (years) + 5

For Women: BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (years) - 161

Where:
Weight: in kilograms
Height: in centimeters
Age: in years

Your Results

Basal Metabolic Rate (BMR): - calories/day

Total Daily Energy Expenditure (TDEE): - calories/day

Your BMR is the number of calories your body needs at rest to maintain basic physiological functions. TDEE is the total calories you need to maintain your current weight based on your activity level.

Basal Metabolic Rate Calculator Calculator Usage Guide

Learn how to use the Basal Metabolic Rate Calculator calculator and its working principles

How to Use the Calculator

  1. Select your gender from the dropdown menu.
  2. Enter your age in years.
  3. Enter your weight in kilograms (kg).
  4. Enter your height in centimeters (cm).
  5. Select your activity level from the dropdown menu (this determines your Total Daily Energy Expenditure).
  6. Click the "Calculate" button to see your BMR and TDEE.
  7. If you want to start over, click the "Reset" button.

Understanding Your Results

Your Basal Metabolic Rate (BMR) is the number of calories your body needs at rest to maintain basic physiological functions such as breathing, circulation, and cell production. Your Total Daily Energy Expenditure (TDEE) is the total calories you need to maintain your current weight based on your activity level.

How to Use Your Results

The BMR and TDEE values can help you understand your energy needs:

  • If you want to maintain your current weight, consume approximately your TDEE calories per day.
  • If you want to lose weight, consume fewer calories than your TDEE (create a calorie deficit).
  • If you want to gain weight, consume more calories than your TDEE (create a calorie surplus).

Note: These calculations provide estimates and individual results may vary. For personalized dietary and fitness advice, consult with a healthcare professional or registered dietitian.