The BMI Calculator is a simple tool that allows you to calculate your Body Mass Index (BMI). This measurement is a good indicator of whether you are at a healthy weight for your height. A BMI of 18.5 to 24.9 is considered to be in the healthy range. If your BMI is outside of this range, it is worth taking steps to bring it back into the healthy range.The BMI Calculator will give you your BMI score, as well as your ideal weight range. This range is based on your height and is a good guide for how much you should weigh. If you are above or below your ideal weight, you may want to consider making some changes to your diet and lifestyle. Even a small change can make a big difference to your health.