1. What is the BMR Formula?

The BMR (Basal Metabolic Rate) formula estimates the number of calories your body needs to maintain basic physiological functions at rest. It's based on the Mifflin-St Jeor Equation, which is considered the most accurate for calculating BMR.

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
• \( gender\_factor \) — +5 for men, -161 for women

Explanation: The equation accounts for the energy needed to maintain basic body functions based on your size, age, and gender.

3. Importance of BMR Calculation

Details: Knowing your BMR helps determine your daily caloric needs for weight maintenance, loss, or gain. It's the foundation for calculating Total Daily Energy Expenditure (TDEE).

4. Using the Calculator

Tips: Enter weight in kg, height in cm, age in years, and select gender. For accurate results, measure your weight and height precisely.

5. Frequently Asked Questions (FAQ)

Q1: Why is BMR different for men and women?
A: Men typically have more muscle mass and less body fat than women of the same weight, resulting in higher BMR.

Q2: What are typical BMR values?
A: Average BMR ranges from 1200-2000 kcal/day for adults, but varies based on size, age, and body composition.

Q3: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (5+ kg) or annually as you age.

Q4: Does this account for activity level?
A: No, this is just BMR. Multiply by an activity factor (1.2-2.5) to estimate total daily calories.

Q5: Why use metric measurements?
A: The equation was developed using metric units. For imperial measurements, convert pounds to kg (÷2.205) and inches to cm (×2.54).