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BMR Equation for Females:
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Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It represents the minimum energy required to keep your body functioning, including breathing, circulation, and cell production.
The calculator uses the Mifflin-St Jeor equation for females:
Where:
Explanation: This equation estimates the calories burned at complete rest based on body composition factors that affect metabolism.
Details: Knowing your BMR helps determine your daily calorie needs for weight maintenance, loss, or gain. It serves as the foundation for calculating your total daily energy expenditure (TDEE) when multiplied by an activity factor.
Tips: Enter weight in kilograms, height in centimeters, and age in years. For accurate results, measure weight without clothes and height without shoes. All values must be valid (weight > 0, height > 0, age between 1-120).
Q1: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg) or at least every 6 months as metabolism changes with age.
Q2: Why is BMR different for males and females?
A: Males typically have more muscle mass and less body fat, resulting in a higher BMR. The equations account for these physiological differences.
Q3: Does pregnancy affect BMR?
A: Yes, BMR increases during pregnancy due to the metabolic demands of the growing fetus. This calculator is for non-pregnant females.
Q4: How accurate is this BMR calculation?
A: It provides a good estimate for most people, but individual variations in muscle mass, body composition, and genetics can affect actual BMR.
Q5: Should I eat below my BMR to lose weight?
A: Generally not recommended as eating below BMR can slow metabolism. Instead, create a deficit based on your TDEE (BMR × activity factor).