BMI Calculator — Free Online with Visual Health Scale
Enter your weight and height to get your BMI, a visual position on the health scale, your ideal weight range, and personalized tips. Your data never leaves the browser.
BMI Calculator Pro
Visual health indicator with ideal range
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on height and weight. Formula: BMI = weight (kg) / [height (m)]². Categories: Underweight <18.5, Normal 18.5-24.9, Overweight 25-29.9, Obese 30+. While useful, BMI doesn't distinguish muscle vs fat, so athletes may show higher. Always consult healthcare professionals for medical advice. This tool is for informational purposes only.