BMI Calculator

Calculate your Body Mass Index and see which weight category you fall into. Works with metric or imperial units.

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Healthy BMI range: 18.5 – 24.9. BMI is a screening measure, not a medical diagnosis — talk to a professional about what it means for you.

How it works

BMI is your weight divided by the square of your height. In metric that's kg/m²; in imperial it's 703 × lb/in². The standard categories are: under 18.5 underweight, 18.5–24.9 healthy, 25–29.9 overweight, and 30+ obese.