What Is My Bmr Calculator

Mifflin-St Jeor Equation:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + S \]

Where S = +5 (men) or -161 (women)

Weight:

Height:

Age:

years

Gender:

Basal Metabolic Rate (BMR):

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1. What Is The BMR Calculator?

The BMR (Basal Metabolic Rate) calculator estimates the number of calories your body needs to perform basic life-sustaining functions at rest. It uses the Mifflin-St Jeor equation, which is currently considered the most accurate formula for BMR calculation.

2. How Does The Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + S \]

Where S = +5 (men) or -161 (women)

Where:

\( Weight \) — Body weight in kilograms (kg)
\( Height \) — Height in centimeters (cm)
\( Age \) — Age in years
\( S \) — Gender constant (+5 for men, -161 for women)

Explanation: The equation calculates the energy expenditure required to maintain basic bodily functions while at complete rest.

3. Importance Of BMR Calculation

Details: Knowing your BMR is essential for weight management, creating effective diet plans, and understanding your body's energy requirements. It forms the foundation for calculating Total Daily Energy Expenditure (TDEE).

4. Using The Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between BMR and RMR?
A: BMR (Basal Metabolic Rate) measures energy expenditure at complete rest in a fasting state, while RMR (Resting Metabolic Rate) is measured under less strict conditions and is typically slightly higher.

Q2: How accurate is the Mifflin-St Jeor equation?
A: The Mifflin-St Jeor equation is considered the most accurate for estimating BMR in healthy individuals, with about 90% accuracy for most people.

Q3: Why does BMR decrease with age?
A: BMR decreases with age due to loss of muscle mass, hormonal changes, and decreased organ function and cellular activity.

Q4: Can I increase my BMR?
A: Yes, through regular exercise (especially strength training), building muscle mass, proper nutrition, and adequate sleep.

Q5: How often should I recalculate my BMR?
A: You should recalculate your BMR whenever your weight changes significantly (5+ kg) or every 6-12 months as you age.