1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It represents the minimum energy required to keep your body functioning, including breathing, circulation, and cell production.

2. How Does the Calculator Work?

The calculator uses the BMR equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years
• -161 — Adjustment factor for women

Explanation: This equation estimates your body's energy requirements at complete rest 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 your total daily energy expenditure (TDEE).

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, and age in years. All values must be valid (weight > 0, height > 0, age between 1-120). The result shows your estimated BMR in kcal/day.

5. Frequently Asked Questions (FAQ)

Q1: Is this equation only for women?
A: Yes, this specific equation is for women. For men, the equation is: BMR = 10 × weight + 6.25 × height - 5 × age + 5.

Q2: What are typical BMR values?
A: Average BMR for women ranges 1200-1500 kcal/day, and for men 1500-1800 kcal/day, but varies based on size and age.

Q3: When should I measure my weight for BMR calculation?
A: For most accurate results, measure your weight in the morning after using the bathroom and before eating.

Q4: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Those with more muscle mass typically have higher BMR.

Q5: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg) or annually to account for aging.