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 equations:

Where:

• Weight — Body weight in kilograms (kg)
• Height — Height in centimeters (cm)
• Age — Age in years
• Activity Multiplier — Factor based on physical activity level

3. Importance of BMR and TDEE Calculation

Details: Knowing your BMR and TDEE is essential for weight management, creating effective diet plans, and setting appropriate calorie goals for weight loss, maintenance, or muscle gain.

4. Using the Calculator

Tips: Enter accurate measurements of weight, height, and age. Select your gender and appropriate activity level based on your weekly exercise routine.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR is the calories burned at complete rest, while TDEE includes all daily activities and exercise.

Q2: How accurate is the Mifflin-St Jeor equation?
A: It's considered one of the most accurate BMR equations for the general population, with about 10% margin of error.

Q3: Should I use BMR or TDEE for weight loss?
A: Use TDEE to determine maintenance calories, then create a deficit from that number for weight loss.

Q4: How often should I recalculate my BMR/TDEE?
A: Recalculate every 4-6 weeks if your weight changes significantly, or if your activity level changes.

Q5: Are there factors that can affect BMR?
A: Yes, factors like muscle mass, hormonal changes, medications, and environmental temperature can affect BMR.