1. What is BMR and TDEE?

BMR (Basal Metabolic Rate) is the number of calories your body needs to perform basic life-sustaining functions at rest. TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including physical activity.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

TDEE is then calculated by multiplying BMR by an activity factor:

• Sedentary (little or no exercise): BMR × 1.2
• Light (exercise 1-3 days/week): BMR × 1.375
• Moderate (exercise 3-5 days/week): BMR × 1.55
• Active (exercise 6-7 days/week): BMR × 1.725
• Very Active (hard exercise daily): BMR × 1.9

3. Importance of BMR Calculation

Details: Knowing your BMR and TDEE helps with weight management, whether your goal is weight loss, maintenance, or muscle gain. It provides a scientific basis for setting appropriate calorie targets.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, 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: Why is BMR different for men and women?
A: Men typically have more muscle mass and less body fat than women, which results in a higher metabolic rate.

Q2: How accurate is this calculator?
A: The Mifflin-St Jeor equation is considered one of the most accurate BMR formulas for the general population, but individual variations exist.

Q3: Should I eat based on BMR or TDEE?
A: For weight maintenance, eat at your TDEE. For weight loss, create a calorie deficit from your TDEE. For weight gain, create a calorie surplus.

Q4: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg) or your activity level changes substantially.

Q5: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue, so people with more muscle mass have higher BMRs.