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 (PAL).

2. How Does The Calculator Work?

The calculator uses the Mifflin-St Jeor equation for BMR and multiplies it by your activity level:

Where BMR is calculated as:

• For men: \( \text{BMR} = (10 \times \text{weight}) + (6.25 \times \text{height}) - (5 \times \text{age}) + 5 \)
• For women: \( \text{BMR} = (10 \times \text{weight}) + (6.25 \times \text{height}) - (5 \times \text{age}) - 161 \)

Explanation: BMR represents the calories your body needs at complete rest. PAL (Physical Activity Level) multipliers account for your daily activity:

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

3. Importance Of Calorie Calculation

Details: Knowing your daily calorie needs is essential for weight management, whether your goal is to lose, maintain, or gain weight. It provides a scientific basis for creating effective nutrition plans.

4. Using The Calculator

Tips: Enter your weight in kilograms, height in centimeters, age in years, select your gender and activity level. For accurate results, use your current measurements and be honest about your activity level.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: The Mifflin-St Jeor equation is considered one of the most accurate BMR formulas for most people, with an accuracy of about ±10% for the general population.

Q2: Should I eat exactly the calculated amount?
A: The calculation provides an estimate. Adjust based on your goals - subtract 500 calories daily for weight loss (1 lb/week) or add 500 calories for weight gain.

Q3: How often should I recalculate my needs?
A: Recalculate whenever your weight changes significantly (5+ kg) or your activity level changes substantially.

Q4: Does muscle mass affect calorie needs?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Those with more muscle mass typically have higher BMRs.

Q5: Are there limitations to this calculation?
A: It may be less accurate for extremely muscular individuals, those with very high body fat percentages, pregnant women, or people with certain medical conditions.