BMI Calculator
Calculate your Body Mass Index and find your healthy weight range.
Important Note
BMI is a general indicator and doesn't account for muscle mass, bone density, age, or body composition. Athletes and muscular individuals may have a high BMI but low body fat. For a complete health assessment, consult a healthcare professional.
How BMI is Calculated
BMI = weight (kg) / height (m)2
The Body Mass Index formula was developed by Belgian mathematician Adolphe Quetelet in the 1830s. While widely used for population studies, it has limitations for individual health assessment.
Frequently Asked Questions
What is BMI and how is it calculated?
BMI (Body Mass Index) is calculated by dividing your weight in kilograms by your height in meters squared (kg/m²). It provides a simple numeric measure of thickness or thinness, allowing health professionals to discuss weight problems more objectively.
What is a healthy BMI range?
A healthy BMI is generally considered to be between 18.5 and 24.9. Below 18.5 is classified as underweight, 25-29.9 as overweight, and 30 or above as obese. However, these ranges may vary slightly based on age and ethnicity.
Is BMI accurate for everyone?
BMI has limitations. It doesn't distinguish between muscle and fat, so athletes may show as overweight despite being healthy. It also doesn't account for age, gender, ethnicity, or body fat distribution. Consider it as one health indicator among many.
How often should I check my BMI?
Checking BMI monthly or quarterly is sufficient for most people. More frequent monitoring is unnecessary as significant weight changes take time. Focus on consistent habits rather than daily fluctuations.