Bmr Calculator Nz

BMR Equations:

Men: BMR = 10 × weight + 6.25 × height - 5 × age + 5

Women: BMR = 10 × weight + 6.25 × height - 5 × age - 161

Weight:

Height:

Age:

years

Gender:

Basal Metabolic Rate (BMR):

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1. What is Basal Metabolic Rate (BMR)?

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

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equations:

For Men: BMR = 10 × weight + 6.25 × height - 5 × age + 5

For Women: BMR = 10 × weight + 6.25 × height - 5 × age - 161

Where:

Weight — in kilograms (kg)
Height — in centimeters (cm)
Age — in years
Different constants are applied based on gender

Explanation: These equations provide a more accurate estimate of BMR compared to older formulas and are widely used in clinical settings.

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. For accurate results, use precise measurements and fasted morning measurements if possible.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and RMR?
A: BMR measures energy expenditure in a completely rested, fasted state, while RMR (Resting Metabolic Rate) is measured under less strict conditions and is typically slightly higher.

Q2: How often does BMR change?
A: BMR decreases with age (about 1-2% per decade after age 20) and changes with body composition, weight fluctuations, and hormonal changes.

Q3: Can I increase my BMR?
A: Yes, through regular exercise (especially strength training), building muscle mass, proper hydration, and adequate protein intake.

Q4: How accurate is this calculator?
A: The Mifflin-St Jeor equation is about 90% accurate for most people, but individual variations in metabolism, body composition, and health conditions can affect results.

Q5: Should I use BMR for weight loss planning?
A: Yes, BMR is the starting point for calculating your total daily energy needs. For weight loss, create a calorie deficit based on your TDEE rather than just your BMR.