Health & Fitness

BMI Calculator

Calculate Body Mass Index and healthy weight range

cm
kg
Age affects healthy BMI interpretation
Your BMI
22.2
Normal weight
Healthy weight range —
BMI Prime —
Ponderal Index —
How to Use
  1. Select your preferred unit system: Metric (kg, cm) or Imperial (lb, ft/in).
  2. Enter your height and weight.
  3. Enter your age and sex for a more accurate healthy weight range.
  4. Your BMI is calculated automatically and shown with its category and healthy range.

Note: BMI is a screening tool, not a diagnostic tool. Consult a healthcare provider for a complete assessment.

Formula

BMI = weight(kg) / height²(m)

For imperial: BMI = 703 × weight(lb) / height²(in)

CategoryBMI Range
Underweight< 18.5
Normal weight18.5 – 24.9
Overweight25 – 29.9
Obese (Class I)30 – 34.9
Obese (Class II)35 – 39.9
Obese (Class III)≥ 40