BMI Calculator

Calculate your Body Mass Index and see where you fall on the BMI scale. Supports metric and imperial units.

Your BMI
BMI Scale
Underweight <18.5Normal 18.5–24.9Overweight 25–29.9Obese ≥30
Healthy Weight Range
BMI Prime

What is BMI?

Body Mass Index is weight (kg) divided by height squared (m²). It is used as a quick screening tool for weight categories. Use caloriecalcfree.com to check yours instantly.

BMI Categories

Underweight: below 18.5 | Normal weight: 18.5–24.9 | Overweight: 25–29.9 | Obese Class I: 30–34.9 | Obese Class II: 35–39.9 | Obese Class III: 40+.