Calculating Bmr For Weight Loss

BMR Equation:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + 5 \text{ (men)} \text{ or } -161 \text{ (women)} \]

Weight:

Height:

Age:

years

Gender:

Basal Metabolic Rate (BMR):

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1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at rest. It represents the minimum energy required to maintain vital functions such as breathing, circulation, and cell production.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + 5 \text{ (men)} \text{ or } -161 \text{ (women)} \]

Where:

\( Weight \) — Body weight in kilograms (kg)
\( Height \) — Height in centimeters (cm)
\( Age \) — Age in years
+5 — Additional calories for men
-161 — Adjustment for women

Explanation: This equation provides a more accurate estimate of BMR compared to older formulas and is widely used in clinical settings.

3. Importance of BMR Calculation

Details: Knowing your BMR is essential for weight management. It helps determine your daily caloric needs for maintaining, losing, or gaining weight. BMR accounts for 60-75% of total daily energy expenditure.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR is the calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all activities and is typically 1.2-1.9 times higher than BMR.

Q2: How accurate is this BMR calculation?
A: The Mifflin-St Jeor equation is about 90% accurate for most people. For precise measurement, metabolic testing is required.

Q3: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. People with more muscle mass typically have higher BMR.

Q4: How often does BMR change?
A: BMR decreases with age (about 1-2% per decade after age 20) and changes with weight fluctuations, muscle mass, and hormonal factors.

Q5: Should I use BMR for weight loss planning?
A: Yes, BMR provides the foundation for calculating your daily caloric needs. For weight loss, create a calorie deficit based on your TDEE.