1. What is BMR and TDEE?

Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at rest. Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, including physical activity.

2. How Does the Calculator Work?

The calculator uses the NHS BMR equation for women:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years
• \( activity\ multiplier \) — Activity level factor

Explanation: The equation calculates your basal metabolic rate based on your weight, height, and age, then multiplies by your activity level to estimate total daily energy expenditure.

3. Importance of BMR and TDEE Calculation

Details: Knowing your BMR and TDEE helps with weight management, creating appropriate diet plans, and understanding your body's energy needs for maintaining, losing, or gaining weight.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is this equation specific to women?
A: This NHS equation is specifically designed for women as metabolic rates differ between genders due to body composition differences.

Q2: What are typical BMR values?
A: BMR typically ranges from 1200-1800 kcal/day for adult women, depending on age, weight, and height.

Q3: How accurate are these calculations?
A: These provide estimates. Individual variations in metabolism, muscle mass, and other factors can affect actual energy expenditure.

Q4: Should I use BMR or TDEE for diet planning?
A: TDEE is more useful for diet planning as it accounts for your daily activity level, while BMR represents only resting metabolic rate.

Q5: How often should I recalculate my BMR/TDEE?
A: Recalculate when your weight changes significantly, or every few months to account for natural metabolic changes.