BMI Calculator Free Body Mass Index Calculator for Adults

Adult BMI Calculator

Calculate your Body Mass Index using your height and weight.

Age

Height (cm)

Weight (kg)

Waist circumference (cm) — optional

I confirm that I am not pregnant, do not have an eating disorder, and do not have a condition that affects height measurement.

Include AI explanation

This calculator is intended for adults aged 20 or older. It is not suitable during pregnancy or for certain medical conditions. It does not provide a diagnosis.