Method
Body mass index divides weight by height squared after converting the inputs to compatible metric units.
Health / browser tool
BMI Calculator
Free BMI calculator to estimate body mass index from height in centimetres and weight in kilograms, then view its reference range.
A quick reference point, not a diagnosis.
Your inputs stay on your device
Body mass index
live resultkg
cm
Your BMI
Within the usual range
BMI is a general screening measure and does not account for every body type or health factor.
Context & Reference
How it works
Calculators are most useful when their assumptions are clear. Review these details to better understand the logic behind the results.
How to use it
Enter height and weight, then review the BMI value and its reference category.
Understand the result
BMI is a height-to-weight ratio, not a diagnosis or a complete measure of health.
Example
A person weighing 70 kg at 1.75 m has a BMI of about 22.9.
Notes
BMI categories are general reference ranges and may not suit every body, age, or medical context.
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