What is a normal BMI?

A BMI between 18.5 and 24.9 is considered normal weight. Under 18.5 is underweight, 25–29.9 is overweight, and 30 or above is obese, according to WHO classifications.

How is BMI calculated?

BMI = weight (kg) ÷ height² (m²). For imperial units: BMI = (weight in pounds × 703) ÷ height² (inches²). A BMI of 22 means weight in kg equals 22 × height in meters squared.

Is BMI an accurate measure of health?

BMI is a useful screening tool but does not account for muscle mass, bone density, age, sex, or fat distribution. Athletes may have a high BMI due to muscle. Always consult a healthcare professional for a complete health assessment.

Home BMI Calculator

BMI Calculator

Calculate your Body Mass Index and healthy weight range.

Unit System

Weight (kg)

Height (cm)

Your BMI appears here

Enter your weight and height, then click Calculate BMI.

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