1. What is the USDA Calorie Calculator?

Definition: This calculator estimates daily calorie needs based on body weight and activity level using USDA guidelines.

Purpose: It helps individuals determine their approximate daily calorie requirements for weight maintenance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Calorie intake (kcal)
• \( W \) — Body weight (kg)
• \( k \) — Activity-specific factor (kcal/kg)

Explanation: The body weight is multiplied by an activity factor that represents calories needed per kg of body weight based on activity level.

3. Importance of Calorie Calculation

Details: Proper calorie estimation helps maintain energy balance, supports weight management goals, and ensures adequate nutrition.

4. Using the Calculator

Tips: Enter your body weight in kg and select an appropriate activity factor (default 30 kcal/kg for moderate activity).

5. Frequently Asked Questions (FAQ)

Q1: How do I determine my activity factor?
A: Typical factors are 25-30 (sedentary), 30-35 (moderate activity), 35-40 (active), or 40+ (very active/athlete).

Q2: Should I use current or goal weight?
A: Use current weight for maintenance, goal weight for planning future intake.

Q3: Is this calculator suitable for weight loss?
A: Yes, subtract 500 kcal/day from the result for ~1 lb/week weight loss.

Q4: How accurate is this calculation?
A: It provides a rough estimate. Individual needs vary based on metabolism, body composition, and other factors.

Q5: Does this account for age or gender differences?
A: No, for more precise calculations consider using the USDA's MyPlate calculator which includes these factors.