Body Metabolic Rate Calculator Mayo Clinic

Mayo Clinic BMR Formula:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + \begin{cases} 5 & \text{if male} \\ -161 & \text{if female} \end{cases} \]

Weight:

Height:

Age:

years

Gender:

Basal Metabolic Rate (BMR):

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1. What Is The Mayo Clinic BMR Formula?

The Mayo Clinic Basal Metabolic Rate (BMR) formula estimates the number of calories your body needs to perform basic life-sustaining functions at rest. It provides an essential baseline for understanding your daily energy requirements.

2. How Does The Calculator Work?

The calculator uses the Mayo Clinic BMR equation:

\[ BMR = 10 \times Weight + 6.25 \times Height - 5 \times Age + \begin{cases} 5 & \text{if male} \\ -161 & \text{if female} \end{cases} \]

Where:

\( Weight \) — Body weight in kilograms (kg)
\( Height \) — Height in centimeters (cm)
\( Age \) — Age in years
+5 — Male constant adjustment
-161 — Female constant adjustment

Explanation: The equation accounts for the fundamental energy requirements based on body size, age, and gender differences in metabolism.

3. Importance Of BMR Calculation

Details: Accurate BMR estimation is crucial for weight management, nutritional planning, and understanding individual metabolic needs. It forms the foundation for calculating total daily energy expenditure.

4. Using The Calculator

Tips: Enter weight in kilograms, height in centimeters, age in years, and select gender. All values must be valid (weight > 0, height > 0, age between 1-120).

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, while RMR (Resting Metabolic Rate) is measured under less strict conditions and is typically slightly higher.

Q2: How accurate is the Mayo Clinic BMR formula?
A: While no formula is 100% accurate for everyone, the Mayo Clinic formula provides a reliable estimate for most healthy adults and is widely used in clinical practice.

Q3: When should BMR be measured?
A: For most accurate results, measure after fasting overnight and before any physical activity. Avoid testing after large meals or strenuous exercise.

Q4: Are there limitations to this formula?
A: The formula may be less accurate for athletes with high muscle mass, elderly individuals, pregnant women, and those with certain medical conditions affecting metabolism.

Q5: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg), or annually as age affects metabolic rate. Major lifestyle changes may also warrant recalculation.