BMI Calculator
Body Mass Index from your height and weight
Enter your height and weight to get your Body Mass Index (BMI) and where it falls — a quick screening of whether your weight is in a healthy range for your height.
What BMI means
BMI is weight relative to height. Standard categories: under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese.
BMI is a rough screen, not a diagnosis — it doesn't distinguish muscle from fat. Talk to a doctor about your health.
Frequently asked questions
Is BMI accurate?
It's a useful population-level screen but imperfect for very muscular or older individuals, since it can't tell muscle from fat.
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered the healthy range for most adults.