How To Calculate BMI Formula - What Is BMI - BMI (Body Mass Index) Chart Explained

In this video we discuss what is BMI (body mass index), how to calculate BMI, the BMI chart, weight classifications based on BMI and some of the risks of having a high BMI.

Transcript/notes
How to calculate bmi
BMI, or body mass index is a measure of a person’s body fat, based on height and weight. And a high bmi can increase a person’s risk for certain diseases.

It is calculated by taking your weight in kilograms and dividing it by your height in meters squared.
Bmi = kg/msq

If you are using pounds for weight and feet or inches for height, then we need to do some conversions. Let’s say someone is 175 pounds and 5 foot 9.

To convert pounds to kilograms,1 pound equals 0.4536 kilograms, so, you multiply by 0.4536, so 175 pounds, times 0.4536 equals 79.38 kilograms.
To convert feet to meters, first convert feet to inches. 12 inches in a foot, so 5 times 12 equals 60 inches, plus 9 inches equals a total of 69 inches. 1 inch equals 0.0254 meters, so multiply by 0.0254, so 69 times 0.0254 equals 1.7526 meters.

Now we have all that we need for the formula. 79.38 kilograms divided by 1.7526 meters squared equals a bmi of 25.8.

And here is the formula for bmi using common US metrics of pounds and inches.

Here is a chart listing weight status that I got from the cdc website, based on bmi. As you see, anything below 18.5 is considered underweight and anything over 30 is considered obese.

And here is a bmi chart listing various weights and heights and the classifications of the bmi’s.

One thing to consider is that someone that has more muscle may fall into an overweight classification.

And, in 2014 the average bmi in the united states was 28.5 for both men and women.

Timestamps
0:00 BMI (body mass index) definition
0:09 Formula for BMI
0:20 How to convert pounds to kilograms
0:36 How to convert inches to meters
1:10 Formula for BMI in pounds and inches
1:26 BMI chart

[japy]

Thank you. I watched several videos on this matter but yours was the one that was straight to the point gave me all the information I needed. Great way to YouTube!

[tropicallymixed.]

Thank you!! Believe it or not, not many youtube videos break it down in an understandable way.

[rylanking]

It’s sad that your Chanel has died I just watched your video about alcohol from three years ago for a school project and decided to check out some of your other videos and I’m happy you keep uploading even though you don’t get the same amount of views as you deserve

[GoodDr.]

I love your video, its very informative and well discuss. A BMI below 18.5 is considered underweight.

[chiangchengkooi]

I always wonder why US like to calculate the hard way.

[meangreengoblin]

So if you have high muscle density. You could have above average BMI. Yet have low subcutaneous and visceral fat.

[prschuster]

I get the same BMI by multiplying weight in pounds by 10.5 and dividing by inches of height. (pounds X 10.5) /inches

[ma.christine]

andito ako dahil sa module namin ahahaha

[EinSofQuester]

My BMI is 28.1 I have a 33 inch waist and you can see my six pack abs. I don't have much fat on my body. So in order to get into the "healthy" BMI range I will need to lose about 25 pounds of muscle. Is that what I should do?

[erectilereptile]

I’m overweight, literally at the border of healthy which is kind of infuriating. 162 lbs 5 7’. Perhaps the muscles make up for it?

[shadCheng]

Wait so if my weight is between 45-47/8 then im over weight? As the age 16?? 🤨

[kubakuba]

kuba antos waży 107, 5kg i 183cm wzrost. (107, 5 )*(1, 83)= BMI 32, 10 to otyłość . kuba antos jest gruby. bo mnie bolało kolana, kostki, biodra, sercr, zołądek, ból brzuch, bół wątroba

[kashish]

I was skeptic about *Agoge Diet* because I thought that I would have to eat only broccoli to lose weight. I am eating only food I like and still losing weight.

[abbywhite]

My weight isn't on here I'm 90lbs

[GREALER]

I’m more confused watching this video 🤷🏽‍♂️

[axeblue]

Did you know the average weight of a female in the United States in 2022 is 170lbs?

[fefnireindraer]

BMI is an absolute joke. Being 200 lbs and 6'4" is overweight? I'm a 6'4" and havent been 200 lbs since the 7th grade. I powerlift and played football.

[GoodDr.]

I love your video, its very informative and well discuss. A BMI below 18.5 is considered underweight.

[muhamadarhambaihaqi]

I was skeptic about Agoge Diet because I thought that I would have to eat only broccoli to lose weight. I am eating only food I like and still losing weight.