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Daily Calories Formula:
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The UK Daily Calories Calculator estimates your daily calorie needs based on the Mifflin-St Jeor equation for BMR calculation and UK physical activity level (PAL) recommendations. It helps determine how many calories you should consume daily to maintain your current weight.
The calculator uses the formula:
Where:
Mifflin-St Jeor Equation:
For men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5
For women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161
Details: Knowing your daily calorie needs is essential for weight management, whether you want to maintain, lose, or gain weight. It provides a scientific basis for planning your diet and helps prevent overeating or undereating.
Tips: Enter your weight in kilograms, height in centimeters, age in years, select your gender, and choose your activity level based on UK physical activity guidelines. All values must be valid (weight > 0, height > 0, age between 1-120).
Q1: What is BMR?
A: Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at rest.
Q2: What are the UK PAL categories?
A: The UK uses five PAL categories: Sedentary (1.2), Lightly active (1.375), Moderately active (1.55), Very active (1.725), and Extra active (1.9).
Q3: How accurate is this calculator?
A: The Mifflin-St Jeor equation is considered one of the most accurate BMR formulas for the general population, with an accuracy of about ±10%.
Q4: Should I use this for weight loss?
A: For weight loss, subtract 500-750 calories from your maintenance calories to lose 0.5-0.75kg per week. For weight gain, add 250-500 calories.
Q5: Are there limitations to this calculation?
A: This calculation may be less accurate for athletes, pregnant women, elderly individuals, or those with significant muscle mass or medical conditions affecting metabolism.