1. What is the Schofield Equation?

Definition: The Schofield equation is a predictive formula for calculating basal metabolic rate (BMR) based on weight, height, age, and gender.

Purpose: It estimates the minimum calories needed daily to maintain basic physiological functions at rest.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BMR \) — Basal metabolic rate (kcal/day)
• \( k \) — Constant (kcal/day)
• \( a \) — Weight coefficient (kcal/kg)
• \( W \) — Weight (kg)
• \( b \) — Height coefficient (kcal/cm)
• \( H \) — Height (cm)
• \( c \) — Age coefficient (kcal/year)
• \( A \) — Age (years)

Explanation: The equation combines gender-specific constants with components for weight, height, and age to estimate energy expenditure at complete rest.

3. Importance of BMR Calculation

Details: Knowing your BMR helps in weight management, nutritional planning, and understanding your body's energy needs.

4. Using the Calculator

Tips: Select your gender, enter your weight in kg, height in cm, and age in years. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why are there different equations for males and females?
A: Biological differences in body composition lead to different energy requirements between genders.

Q2: How accurate is the Schofield equation?
A: It provides a good estimate (±10%) for most healthy adults but may be less accurate for very muscular or obese individuals.

Q3: Should I use this for weight loss planning?
A: Yes, but remember this is just your resting metabolism. You'll need to account for activity level as well.

Q4: Why does age reduce BMR?
A: Metabolism naturally slows with age due to decreased muscle mass and changes in hormone levels.

Q5: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (5+ kg) or annually as you age.