BMI Calculator
Calculate your Body Mass Index (BMI) and see your weight category. Metric and imperial units supported.
How to use
1. Select your unit system. 2. Enter your weight and height. 3. Your BMI and category appear instantly.
Formula
BMI = weight(kg) / height(m)^2
Examples
- 70 kg, 175 cm → BMI = 22.9 (Normal)
- 154 lb, 5 ft 9 in (69 in) → BMI = 22.8 (Normal)
Important notes
BMI is a screening tool, not a diagnostic of body fatness or health. Consult a healthcare professional for medical advice.
Frequently asked questions
What is a healthy BMI?
For most adults, a BMI between 18.5 and 24.9 is considered normal.
Does BMI apply to athletes?
BMI may misclassify muscular athletes; it is one indicator among many.