Health
BMI Calculator (Metric)
Measure body mass index using kilograms and centimeters, then see the World Health Organization weight class instantly.
Height in centimeters, weight in kilograms—instantly classify BMI.
BMI (metric units)
BMI = weight_kg ÷ (height_m)²
The calculator converts your height from centimeters to meters before applying the standard BMI equation.
How to use
- Enter your height in centimeters.
- Enter your weight in kilograms.
- Review the BMI score and category label shown beneath the inputs.
Example
Input: Height = 170 cm, Weight = 68 kg
Output: BMI ≈ 23.5 (Normal weight)
FAQ & notes
Why does BMI sometimes feel inaccurate?
BMI is a population-level screening tool and does not distinguish between muscle and fat mass, so athletic builds may score higher despite healthy composition.
How is this different from the imperial calculator?
This version expects metric inputs. The imperial calculator converts feet, inches, and pounds before applying the same BMI formula.