Free BMI Calculator for all platforms, a software program designed to estimate Body Mass Index for people who encounter overweight or underweight problems or want to avoid overweight or underweight and all related grave consequences. Body Mass Index - an indicator that allows people to find out if their weight is healthy or they fall into overweight or underweight category, both of which are associated with an increased risk of metabolic disorder. Nowadays the number of people who encounter overweight problems has increased multifold. Overweight affects more than health. It involves complications such as heart disease, stroke, digestive disorder and other pathologies, but also guilt, self-loathing, embarrassment and depression. No less harmful than overweight or obesity is underweight as it may lower immunity and increase the risk of associated diseases. BMI Calculator helps users avoid overweight or underweight and all related grave consequences by keeping them informed on their Body Mass Index trends.