What is BMI?
BMI stands for Body Mass Index. It compares your weight with your height to estimate whether your weight is in a common health range.
Free health tool
BMI Calculator
Calculate your Body Mass Index using your height and weight, then understand your BMI category in a simple and friendly way.
Enter your body details
Use kilograms for weight and centimeters for height.
Important note
This BMI calculator is for general information only. It is not medical advice and should not replace guidance from a doctor or qualified health professional.
BMI formula
BMI = weight (kg) ÷ height² (m²)
Quick guide
Understand BMI simply
BMI is a simple screening number based on height and weight. It is useful for general awareness, but it is not a full medical diagnosis.
BMI categories
Common BMI categories are underweight, normal, overweight, and obesity. These categories are general guides only.
Medical reminder
BMI does not measure muscle, body fat, or health conditions. For health decisions, consider speaking with a medical professional.