I have for long thought of constructing a Body Mass Index (BMI) machine and donating it to my former school. It’s no surprise that other people already have built it. There are coin-operated BMI machines (see photo). What I had envisaged is not an electronically operated machine. I was thinking more in the line of wood carpentry. There will be a weighing machine fitted to a stand to measure height. By the side will be an information board which will display the mathematical formula for calculating BMI and also information on what to do if BMI is not within normal limit. That’s it. Sadly, I am bad at drawing and can’t even post a picture of the concept.
BMI is basically a measure to test if you are normal, too fat, or too thin for your height. It is calculated as weight (in kg) divided by square of height (in metres)
Simply put, BMI = kg/m2
Let’s not complicate things further. Simply use this online BMI calculator (click here). Insert the required information and click Calculate. The result will be automatically displayed. For example, if you are obese, it will give instructions on what you should do to lose weight. There are many BMI calculators online but I find this one to be good because you can insert your ethnicity, put in weight in kilogram instead of pound, and height in feet and inches instead of centimetre/metre (more suitable for Indian users).