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NHS UK Harris-Benedict Formula for Females:
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The NHS UK Harris-Benedict formula is used to estimate Basal Metabolic Rate (BMR) - the number of calories your body needs at rest to maintain basic physiological functions. This specific formula is designed for females and is recommended by the UK National Health Service.
The calculator uses the NHS UK Harris-Benedict formula for females:
Where:
Explanation: The formula calculates the minimum energy expenditure required to sustain vital functions while at complete rest, taking into account weight, height, and age factors specific to females.
Details: Knowing your BMR is essential for creating effective weight management plans, determining daily caloric needs, and establishing appropriate nutritional guidelines for maintaining, losing, or gaining weight.
Tips: Enter your weight in kilograms, height in centimeters, and age in years. All values must be valid (weight > 0, height > 0, age between 1-120). For accurate results, use current measurements.
Q1: What is the difference between BMR and TDEE?
A: BMR represents calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all daily activities and exercise. TDEE is typically 1.2-2.0 times BMR depending on activity level.
Q2: How often should I recalculate my BMR?
A: You should recalculate your BMR whenever there are significant changes in your weight (5+ kg), or annually as age affects metabolic rate.
Q3: Why is there a specific formula for females?
A: Females generally have lower BMR than males due to differences in body composition, muscle mass, and hormonal factors, requiring gender-specific calculations.
Q4: Are there limitations to this formula?
A: The formula provides estimates and may not account for individual variations in muscle mass, body composition, thyroid function, or other metabolic factors.
Q5: How can I use my BMR for weight management?
A: For weight maintenance, consume calories equal to your TDEE. For weight loss, create a calorie deficit (typically 500 kcal/day for 0.5kg/week loss). For weight gain, consume surplus calories above TDEE.