A BMI Chart is a tool used to assess an individual's body mass index (BMI), which is a measure of body fat based on height and weight. The chart typically displays a range of BMI values categorized as underweight, normal weight, overweight, and obese. By comparing their BMI to these categories, individuals can gain insight into their weight status and potential health risks. To calculate BMI, one can use the formula: weight in kilograms divided by height in meters squared. Alternatively, many online calculators and mobile apps can simplify this process. Regularly checking BMI can help monitor changes in body composition over time.