1. What is Basal Metabolic Rate?

Basal Metabolic Rate (BMR) is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions at complete rest. This includes breathing, circulation, cell production, nutrient processing, protein synthesis, and ion transport.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation for women:

Where:

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

Explanation: This equation accounts for the calories needed to maintain basic physiological functions based on body size and age.

3. Importance of BMR Calculation

Details: Knowing your BMR helps determine your total daily energy needs. It's essential for weight management, nutrition planning, and understanding your body's energy requirements.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, and age in years. For accurate results, measure your weight and height precisely. All values must be valid (weight > 0, height > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: Why is the equation different for women?
A: Women typically have higher body fat percentages and different hormonal profiles which affect metabolic rate, hence the different equation.

Q2: What's the difference between BMR and TDEE?
A: BMR is calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all daily activities and exercise.

Q3: How accurate is this calculation?
A: It provides a good estimate (±10%) for most people, but individual variations in muscle mass, genetics, and health conditions can affect actual BMR.

Q4: When should I measure my weight for BMR calculation?
A: For most accurate results, measure first thing in the morning after using the bathroom and before eating or drinking.

Q5: Does BMR change over time?
A: Yes, BMR decreases with age (about 1-2% per decade after age 20) and changes with body composition changes.