General · Health
BMI calculator.
Calculate your Body Mass Index, see your category, and find your healthy weight range. Switch between metric (cm, kg) and imperial (ft, in, lbs).
Inputs
Your BMI
Fill the form and press Calculate BMI.
Understanding Body Mass Index (BMI)
BMI estimates body fat based on height and weight. It's a screening tool, not a diagnosis — muscle mass, age, sex, and body composition all affect interpretation.
Formula
- Metric: BMI = weight (kg) / [height (m)]²
- Imperial: BMI = [weight (lbs) / height (in)²] × 703
Categories (Health Canada / WHO)
- Underweight: BMI < 18.5
- Normal weight: 18.5 – 24.9
- Overweight: 25.0 – 29.9
- Obese Class I: 30.0 – 34.9
- Obese Class II & III: ≥ 35.0
Disclaimer
This BMI calculator is for educational purposes only and is not a substitute for professional medical advice. Consult a healthcare provider for any health assessment.