BMI Calculator
Get your Body Mass Index (BMI) and BMI Prime instantly using your height and current weight, and understand your health category.
Understanding Your Body Mass Index
Learn the formula, the categories, and the historical context of the BMI measurement.
What is BMI?
Body Mass Index (BMI) is a screening tool that uses your height and weight to estimate if you have a healthy weight. It was invented by Adolphe Quetelet (1830s-1850s).
BMI Calculation
The standard calculation uses this formula:BMI = weight (kg) / height (m)²Example: A person weighing 70 kg with a height of 1.75 m has a BMI of 70 / (1.75)² ≈ 22.86.
WHO Categories
The World Health Organisation (WHO) defines the normal weight range for adults as a BMI between 18.5 and 24.99. Categories extend from Seriously Underweight to Obese.
Limitations
BMI is a screening tool, not a diagnostic one. It doesn't distinguish between muscle and fat, making it less accurate for athletes, the elderly, and certain ethnic groups.
Explore Other Health Tools
Continue your health journey with related tools like BMR, Waist-to-Height Ratio, and more.
Frequently Asked Questions (FAQs)
Find clear answers to common questions about BMI, its accuracy, and its practical uses.