BMI Calculator

Body Mass Index in metric or imperial. Get your category.

100% in your browser · No uploads
BMI24.5
CategoryHealthy weight

What this does

BMI Calculator computes Body Mass Index from your height and weight in metric or imperial units, then categorizes the result using WHO ranges.

When to use it

  • A quick health screening check based on height and weight
  • Tracking your trend over time as part of a fitness program
  • Filling out a medical or insurance form that asks for BMI

Frequently asked

Is BMI accurate?

BMI is a rough screening tool, not a diagnostic. It doesn't distinguish muscle from fat, so athletes often score 'overweight' while having very low body fat. Use it as a starting point, not a verdict.

What are the categories?

Under 18.5 underweight, 18.5-24.9 healthy, 25-29.9 overweight, 30+ obesity. These are WHO ranges for adults.