1. What is BMR?

BMR (Basal Metabolic Rate) represents the number of calories your body needs to perform basic life-sustaining functions at rest. It accounts for approximately 60-75% of total daily energy expenditure.

2. How Does the Calculator Work?

The calculator uses the BMR equation:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years

Explanation: This equation provides an estimate of your basal metabolic rate based on basic anthropometric measurements.

3. Accuracy of BMR Calculation

Details: This BMR calculator is accurate within approximately 10% for most individuals. However, actual BMR can vary based on factors such as body composition, hormonal status, and genetic factors that are not accounted for in this simple equation.

4. Using the Calculator

Tips: Enter your weight in kilograms, height in centimeters, and age in years. All values must be valid positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this BMR calculator?
A: This calculator provides estimates that are generally accurate within 10% for most healthy adults.

Q2: What factors affect BMR accuracy?
A: Body composition (muscle vs fat percentage), thyroid function, stress levels, and genetic factors can all influence actual BMR.

Q3: Should I use BMR for weight loss planning?
A: BMR provides a starting point, but total daily energy expenditure (TDEE) which includes activity level should be used for weight management planning.

Q4: How often does BMR change?
A: BMR decreases with age (about 1-2% per decade after age 20) and changes with significant weight loss or gain.

Q5: Are there more accurate methods to measure BMR?
A: Indirect calorimetry (measuring oxygen consumption) provides the most accurate BMR measurement in clinical settings.