BMR (Basal Metabolic Rate) Calculator
About BMR (Basal Metabolic Rate) Calculator
The BMR Calculator helps you estimate the number of calories your body needs to perform basic life-sustaining functions such as breathing, circulation, and digestion while at rest. It’s essential for fitness planning, weight loss, and nutrition tracking.
Formula (Simple Explanation)›
BMR (Men) = 88.36 + (13.4 × weight in kg) + (4.8 × height in cm) − (5.7 × age in years)
For Women: BMR = 447.6 + (9.2 × weight in kg) + (3.1 × height in cm) − (4.3 × age in years). This gives the approximate calories your body burns daily at rest.
Example:
Input: For a 30-year-old man weighing 70 kg and 175 cm tall
Output: BMR = 88.36 + (13.4 × 70) + (4.8 × 175) − (5.7 × 30) = 1,686 calories/day.
Steps to Use:
- Select your gender.
- Enter your age, weight, and height.
- Click 'Calculate' to get your BMR — the calories you burn at rest.
- Use this value to plan calorie intake for weight maintenance or loss.
Frequently Asked Questions
What is BMR and why is it important?›
BMR, or Basal Metabolic Rate, is the number of calories your body needs to function at rest. Knowing it helps plan your diet and exercise goals.
How is BMR different from BMI?›
BMI measures your body weight relative to height, while BMR measures your calorie needs. BMR is about metabolism; BMI is about body weight category.
Can I use this calculator for weight loss?›
Yes. Subtract 300–500 calories from your BMR-based total daily energy expenditure (TDEE) to create a safe calorie deficit.
Does BMR change with age?›
Yes. BMR decreases as you age because muscle mass and metabolism tend to slow down.
Is the BMR calculator accurate?›
It provides a reliable estimate using the Harris–Benedict equation. For medical or fitness precision, consult a nutritionist or fitness expert.