BMI

You may have heard of BMI but what is it?

BMI (body mass index) best used to determine wether a person is obese or clinically obese.

Your BMI is calculated by dividing your weight in kilograms by your height in centimetres, squared. W/(Hsquared)=BMI

The BMI calculator is not accurate if you are an athlete or carry alot of muscle as muscle ways more than fat and could put you into a higher weight category.

However working out your BMI is quick, easy and cheap to do.
If your having trouble converting feet into centimetres visit

For example, I am 170.2cm (5'7") and weigh 53kg
The equation I used to work out my BMI is
170.2*170.2=28,968
28.968/53=0.0018291

Giving me a BMI of 18. This is a perfect example of how BMI isn't 100% effective, it doesn't take into consideration that I exercise for a living and in actual fact am not underweight but am healthy.

Check out the BMI chart to see which category you fall into.


If you have any questions or concerns don't hesitate to leave a comment or drop me an email at barrettsfitness@googlemail.com