Toolbench / Everyday / BMI Calculator
BMI Calculator
Enter height and weight to get your Body Mass Index and its standard category.
Input
Result
Categories (WHO): under 18.5 underweight · 18.5–24.9 normal · 25–29.9 overweight · 30+ obese. BMI is a screening tool, not a diagnosis — speak to a healthcare professional for personal advice.
About the bmi calculator
Body Mass Index (BMI) is a simple ratio of weight to height (weight in kilograms divided by height in metres squared) used as a quick population-level screen for underweight, healthy weight, overweight and obesity.
Because BMI uses only height and weight, it does not distinguish muscle from fat and can misclassify very muscular or older individuals. It is a starting point, not a measure of health on its own.
This calculator works in metric or imperial units and computes entirely in your browser. For any decision about your weight or health, consult a qualified healthcare professional rather than relying on BMI alone.