BMI Calculator

Calculate your Body Mass Index (BMI) to determine if you're underweight, normal weight, overweight, or obese. Supports both metric and imperial units.

BMI Calculator

Unit System:

Weight (kg):

Height (cm):

About This Calculator

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The BMI is a convenient rule of thumb used to broadly categorize a person as underweight, normal weight, overweight, or obese based on tissue mass (muscle, fat, and bone) and height.

Our BMI calculator supports both metric (kg/cm) and imperial (lbs/inches) units, making it accessible for users worldwide. The results include your BMI value, weight category, and reference ranges for all categories.

BMI Categories:

Underweight: BMI less than 18.5
Normal weight: BMI 18.5-24.9
Overweight: BMI 25-29.9
Obese: BMI 30 or higher

Note: BMI is a screening tool and is not diagnostic. Consult with a healthcare professional for proper medical assessment.