Compare Body Mass Index for multiple people or track over time.
Enter weight and height, optionally add a name, and click "Add Person." Add multiple entries to compare BMI values side by side.
Underweight: <18.5 | Normal: 18.5–24.9 | Overweight: 25–29.9 | Obese: ≥30. These are WHO standard ranges for adults.
BMI is a useful screening tool but doesn't account for muscle mass, bone density, or body composition. Athletes may have high BMI despite low body fat.