Calculate your Body Mass Index, see your health classification, ideal weight range, and estimated calorie needs.
BMI (Body Mass Index) is calculated by dividing your weight in kilograms by your height in metres squared (kg/m²). It provides a quick screening tool to identify potential weight-related health risks across population groups.
BMI does not distinguish between muscle and fat mass. Athletes and highly muscular individuals may have a high BMI while being in excellent health. BMI also does not account for body fat distribution — waist circumference is often a better predictor of metabolic health risk.
This calculator is designed for adults 18 and older. Children's BMI uses age- and sex-specific growth charts (BMI-for-age percentiles) and should be assessed by a healthcare professional.
Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns in a day, including activity. It is calculated using the Mifflin-St Jeor equation for Basal Metabolic Rate (BMR) multiplied by an activity factor.