Calculates body mass index, basal metabolic rate, and body surface area for males and females.
BMI, BMR, and BSA Calculator
Disclaimer: This calculator is for informational purposes only and should not replace professional medical advice. Always consult a healthcare professional for personalized guidance.
1. Body Mass Index (BMI)
- Definition: A numerical value calculated from a person’s weight and height that is used to classify underweight, normal weight, overweight, or obesity in adults.
- Formula: BMI=Weight (kg)Height (m)2\text{BMI} = \frac{\text{Weight (kg)}}{\text{Height (m)}^2}BMI=Height (m)2Weight (kg)
- Interpretation:
- Underweight: <18.5
- Normal weight: 18.5–24.9
- Overweight: 25–29.9
- Obese: ≥30
2. Basal Metabolic Rate (BMR)
- Definition: The amount of energy (calories) the body needs to maintain basic physiological functions (like breathing, circulation, and cell production) at rest.
- Purpose: Helps determine daily calorie needs and is used in weight management.
- Influencing Factors: Age, sex, weight, height, and body composition.
3. Body Surface Area (BSA)
- Definition: The total surface area of the human body, often used in medical settings to calculate drug dosages, especially in chemotherapy, and to assess fluid requirements and cardiac index.
- Common Formula (Mosteller): BSA=(Height (cm)×Weight (kg)3600)\text{BSA} = \sqrt{\left( \frac{\text{Height (cm)} \times \text{Weight (kg)}}{3600} \right)}BSA=(3600Height (cm)×Weight (kg))
- Typical Adult BSA: Approximately 1.6 to 2.0 m²