1. What is the Schofield Equation Calculator?

Definition: This calculator estimates Basal Metabolic Rate (BMR) using the Schofield equation, which predicts energy requirements based on gender, weight, height, and age.

Purpose: It helps nutritionists, dietitians, and health-conscious individuals determine daily calorie needs for weight management.

2. How Does the Calculator Work?

The calculator uses the Schofield equation:

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 anthropometric measurements with gender-specific coefficients to estimate resting energy expenditure.

3. Importance of BMR Calculation

Details: BMR represents the calories needed for basic bodily functions at rest. It's the foundation for determining total daily energy expenditure.

4. Using the Calculator

Tips: Select gender, enter weight in kg, height in cm, and age in years. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why are there different equations for males and females?
A: Biological differences in body composition (muscle mass, fat distribution) affect metabolic rates, requiring gender-specific formulas.

Q2: How accurate is the Schofield equation?
A: It provides reasonable estimates for healthy populations but may be less accurate for very muscular, obese, or elderly individuals.

Q3: What's the difference between BMR and TDEE?
A: BMR is calories burned at rest; TDEE (Total Daily Energy Expenditure) includes activity and is typically 1.2-2.5 × BMR.

Q4: Why does age decrease BMR?
A: Metabolism 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 (±5kg) or annually to account for aging effects.