1. What is Daily Calorie Calculation?

Daily calorie calculation estimates the number of calories your body needs each day to maintain its current weight. It's based on your Basal Metabolic Rate (BMR) and physical activity level, adjusted for age, gender, weight, and height.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation for BMR and multiplies by activity factor:

Where BMR is calculated as:

• Men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) + 5
• Women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) - 161

Activity Multipliers:

• Sedentary (little or no exercise): × 1.2
• Lightly active (light exercise 1-3 days/week): × 1.375
• Moderately active (moderate exercise 3-5 days/week): × 1.55
• Very active (hard exercise 6-7 days/week): × 1.725
• Extra active (very hard exercise, physical job): × 1.9

3. Importance of Calorie Calculation

Details: Understanding your daily calorie needs is essential for weight management, athletic performance, and overall health. It helps in creating effective diet plans for weight loss, maintenance, or muscle gain.

4. Using the Calculator

Tips: Enter your age in years, select gender, enter weight in kilograms, height in centimeters, and choose your activity level. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is age important in calorie calculation?
A: Metabolism naturally slows down with age, so calorie needs decrease as we get older to maintain the same weight.

Q2: What is BMR?
A: Basal Metabolic Rate is the number of calories your body needs to perform basic life-sustaining functions at rest.

Q3: How accurate is this calculation?
A: The Mifflin-St Jeor Equation is considered one of the most accurate BMR formulas for the general population.

Q4: Should I adjust for weight goals?
A: Yes, for weight loss subtract 500 kcal/day, for weight gain add 500 kcal/day from the maintenance calories.

Q5: How often should I recalculate my calories?
A: Recalculate every 4-6 weeks or after significant weight changes (±5 kg) to ensure accuracy.