1. What is TDEE?

Total Daily Energy Expenditure (TDEE) represents the total number of calories your body burns in a day, including basal metabolic rate (BMR) and calories burned through physical activity. It's essential for weight management and nutrition planning.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation for females:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( activity\ factor \) — Multiplier based on activity level

Activity Factors:

• 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 TDEE Calculation

Details: Knowing your TDEE helps in creating effective weight management plans. To lose weight, consume fewer calories than your TDEE; to gain weight, consume more. Maintaining weight requires matching calorie intake to your TDEE.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your activity level based on your weekly exercise routine. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why use the Mifflin-St Jeor Equation?
A: The Mifflin-St Jeor Equation is considered one of the most accurate formulas for calculating BMR and is widely used in clinical and research settings.

Q2: How often should I recalculate my TDEE?
A: You should recalculate your TDEE whenever your weight changes significantly (5+ kg) or your activity level changes substantially.

Q3: Is this calculator specific to UK females?
A: Yes, this calculator uses the Mifflin-St Jeor Equation specifically calibrated for female physiology and is designed for use by women in the UK.

Q4: How accurate is the TDEE calculation?
A: While the Mifflin-St Jeor Equation is among the most accurate formulas available, individual variations in metabolism mean it should be used as an estimate rather than an exact measurement.

Q5: Should I adjust my calorie intake based on goals?
A: Yes, for weight loss, reduce your calorie intake by 300-500 calories below your TDEE; for weight gain, increase by 300-500 calories above your TDEE.