To calculate your BMI, you need to know your weight and height. BMI is a measure of body fat based on height and weight that applies to adult men and women. You can use an online BMI calculator to determine your BMI. For example, the CDC provides an Adult BMI Calculator that you can use to enter your weight and height, and it will calculate your BMI and indicate which category your weight falls into. Another option is the BMI Calculator provided by Calculator.net, which also provides additional information such as the healthy BMI range and healthy weight for your height. Keep in mind that while BMI is a widely used and useful indicator of healthy body weight, it does have its limitations. BMI is only an estimate that cannot take body composition into account, and it may not be fully accurate because it is a measure of excess body weight, rather than excess body fat. BMI is further influenced by factors such as age, sex, ethnicity, muscle mass, body fat, and activity level, among others.