Measurement of various quantities has been an integral part of our lives since ancient times. In this modern era of automation, we need to measure quantities more so than ever. So, what is the importance of BMI converter? The purpose of BMI converter is to provide BMI in the unit that you require irrespective of the unit in which BMI was previously defined. Conversion of these quantities is equally important as measuring them. BMI conversion helps in converting different units of BMI. BMI is a key index for relating weight to height. BMI is a person's weight in kilograms (kg) divided by height in meters squared. Normal weight, overweight, and obesity can be determined by BMI.. There are various units which help us define BMI and we can convert the units according to our requirement. unitsconverters.com provides a simple tool that gives you conversion of BMI from one unit to another.