QUICK GUIDE
Calculate body mass index
Enter weight in kilograms and height in centimeters. BMI is calculated as weight in kilograms divided by height in meters squared.
FREE ONLINE CALCULATOR
BMI Calculator
Estimate body mass index from your height and weight in a few seconds. The calculation stays in your browser and is intended as general information.
Open the bmi calculatorNo account needed. Your calculation stays in your browser.
QUICK GUIDE
Understand the limits of BMI
BMI is a screening measure and does not directly measure body fat or account for every individual factor. It is not a diagnosis or a substitute for advice from a qualified health professional.
COMMON QUESTIONS
About the bmi calculator
What is the BMI formula?
BMI equals weight in kilograms divided by height in meters squared. This calculator accepts centimeters and kilograms and converts height for the calculation.
Is BMI a medical diagnosis?
No. BMI is a general screening estimate and cannot determine an individual’s health. Speak with a qualified health professional for personal medical guidance.