Body Mass Index is a quick screening measure that uses your height and weight to estimate body fat. It is widely used but does not account for muscle mass, bone density, or body composition.

BMI is a useful general indicator but not definitive. Athletes and muscular people often have high BMI without being unhealthy. Always consult a healthcare provider for personalized advice.

Generally, 18.5 to 24.9 is considered healthy. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30+ is obese.