- Dec 21, 2010

- 26

- 3

With a quick little search you can find an online calculator for just about anything. Well if you like to do things yourself thenheres how to make some of the basic calculations.

Body mass index (BMI)

- Used to determine whether a person is at a healthy body weight.

- Muscularity can cause inaccuracy.

How to calculate:

Weight(kg) divided by height(m) squared

1kg = 2.2lbs and 1m = 39.25 inches

I'll use myself as an example. I'm 6' tall 183lbs this morning. So using the conversions above that makes me 1.83 meters and 83.1 kg's.

83.1 divided by 1.83 squared (square your height first) so that makes it 83.1 divided by 3.34. That means my BMI is 24.88

BMI Less than 20 — Under Weight

BMI 20-25 — Normal Weight

BMI 25-30 — Over Weight

BMI 30-40 — Obese

BMI Over 40 — Severely Obese

I fall into the normal range. One thing to keep in mind with bmi is that muscularity plays a big role. As you can see I'm close to being overweight at only 183lbs. That's because I have little fat and decent muscle. So if it say you are overweight it does not mean that you are unhealthy. This is just to make a quick assessment of whether you are at a healthy weight. If you feel you are at a healthy weight and your bmi says otherwise then you should have your body fat percentage measured to be sure.

Body mass index (BMI)

- Used to determine whether a person is at a healthy body weight.

- Muscularity can cause inaccuracy.

How to calculate:

Weight(kg) divided by height(m) squared

1kg = 2.2lbs and 1m = 39.25 inches

I'll use myself as an example. I'm 6' tall 183lbs this morning. So using the conversions above that makes me 1.83 meters and 83.1 kg's.

83.1 divided by 1.83 squared (square your height first) so that makes it 83.1 divided by 3.34. That means my BMI is 24.88

BMI Less than 20 — Under Weight

BMI 20-25 — Normal Weight

BMI 25-30 — Over Weight

BMI 30-40 — Obese

BMI Over 40 — Severely Obese

I fall into the normal range. One thing to keep in mind with bmi is that muscularity plays a big role. As you can see I'm close to being overweight at only 183lbs. That's because I have little fat and decent muscle. So if it say you are overweight it does not mean that you are unhealthy. This is just to make a quick assessment of whether you are at a healthy weight. If you feel you are at a healthy weight and your bmi says otherwise then you should have your body fat percentage measured to be sure.