BMR Calculator
Accurately calculate your Basal Metabolic Rate (BMR) to plan nutrition, fitness, and weight management.
What is BMR and Why It Matters
Use the BMR Calculator to estimate daily calorie needs based on your weight, height, age, and biological sex. Learn how many calories your body burns at rest and plan diet or exercise effectively.
Formula
How to Use?
- Enter your weight in kg or lbs.
- Enter your height in cm, inches, or feet.
- Enter your age in years.
- Select your biological sex.
- View your BMR and daily calorie needs for different activity levels.
Worked Examples
Example 1
Example 2
Understanding BMR
Basal Metabolic Rate (BMR) represents the calories your body burns at rest to maintain vital functions like breathing, circulation, and body temperature. Calculating BMR helps tailor nutrition plans, monitor caloric intake, and optimize weight management.
Activity Level Adjustment
The calculator provides calorie estimates for different activity levels: Sedentary, Light, Moderate, and Very Active. Use these to adjust daily calorie intake according to your lifestyle.
Table: BMR for Different Activity Levels
| Sedentary | Little or no exercise | 1.2 |
|---|---|---|
| Light | 1–3 days/week | 1.375 |
| Moderate | 3–5 days/week | 1.55 |
| Very Active | 6–7 days/week | 1.725 |
FAQs
What is BMR?
BMR is the number of calories your body burns at rest to maintain vital functions like breathing and circulation.
Why calculate BMR?
Knowing your BMR helps you plan caloric intake for weight loss, maintenance, or gain.
How accurate is this calculator?
It uses the Mifflin-St Jeor equation, which is widely accepted for estimating resting energy expenditure.