Close Menu
Million Dollar Baby Fitness
    Facebook X (Twitter) Instagram
    Tuesday, July 1
    • Competitor Login
    • Shop
    • Contact Us
    Facebook Instagram X (Twitter) YouTube
    Million Dollar Baby Fitness
    • Home
    • About Us
      • About Gloria
      • About Fabian
      • Contributing Authors
        • Layne Norton Posts
        • Alan Aragon Posts
        • Nick Tumminello Posts
    • Blog
      • Training
        • Resistance Training
        • Cardio/Conditioning
      • Nutrition
      • Competing
      • Mindset
        • Inspirational Stories
        • Motivational Photos & Pics
        • Motivational Videos
      • Other Topics
        • General
        • Weight Loss
        • Physique
        • Myths & Scams
        • Rants
        • Beauty
      • Video Posts
    • Gallery
      • Fitness Celebrities
      • Figure Contests
        • 2017
        • 2016
        • 2015
        • 2013
        • 2012
      • 2012 Oxygen Mag Covergirl Competition
      • Fitness Photos
      • Non-Fitness Photos
    • Tools
      • BMI Calculator
      • Body Fat Percentage Calculator
      • Calorie Burn Calculator
      • Calorie Burn Chart
      • Ideal Weight Calculator
      • Personal BMR Calculator
      • Training Zone Calculator
    • Shop
    Million Dollar Baby Fitness
    Home»Physique»Body Mass Index and the BMI Chart
    Physique

    Body Mass Index and the BMI Chart

    FabianBy Fabian26 May, 20133 Mins Read
    Facebook Twitter Pinterest LinkedIn Tumblr Email
    Body Mass Index
    Share
    Facebook Twitter LinkedIn Pinterest Email

    The Body Mass Index, or BMI, is normally presented in the form of a BMI Chart. Generally speaking, it’s used to quickly and conveniently assess how healthy or unhealthy a person’s body weight is.

    The BMI is a very widely used measurement, and it’s purpose is to classify a person’s body weight based upon their height, assuming they have an average body composition (or fat percentage).

    It’s calculated by simply dividing your weight (in kilograms) by the square of your height (in meters). It can be calculated using a variety of different units though, as you can see with these equations:

    BMI Equations

    The table below shows the various classifications that your body weight can fall into, based upon your BMI:

    BMI Classification
    Under 16.5 Severely Underweight
    16.5 to 18.4 Underweight
    18.5 to 24.9 Normal
    25.0 to 29.9 Overweight
    30.0 to 34.9 Obese – Class I
    35.0 to 39.9 Obese – Class II
    Over 40.0 Obese – Class III

    The BMI Chart

    The BMI Chart below shows the classifications of body weight based on your Body Mass Index, as your height and weight varies.

    BMI Chart

    Using the BMI

    The BMI has been used by the World Health Organization to measure obesity statistics throughout the world population since the early 1980s. It’s also still used quite extensively by medical practitioners as a guide to assessing patients’ body weight, usually in conjunction with other measurements or tests.

    That being said however, in practice the BMI has a number of serious limitations.

    This means that the BMI isn’t really suitable as a tool for tracking your weight loss progress.

    Limitations of the BMI

    The main problem with the BMI is the fact that it assumes the distribution of muscle and bone mass in your body is average.

    That means it can’t really distinguish between muscle weight, fat weight and bone weight in your body – it treats them as being all the same. And that’s not exactly the case, is it?

    So as a result, the Body Mass Index can actually provide misleading information, particularly in the following cases:

    • For people whose bodies have a higher than average muscle proportion, such as athletes, the BMI will be incorrectly high.
    • For people whose bodies have a lower than average muscle and bone proportion, such as the elderly, the BMI will be incorrectly low.

    Think about this example:

    A woman who loses fat mass through an effective exercise program, but at the same time gains an equal amount of muscle mass, will have no change at all in her Body Mass Index value, even though her body composition will have actually improved quite a bit.

    As you can see then, using a BMI Chart certainly wouldn’t be a very reliable way of tracking improvements in your body’s condition as you lose weight. The preferred measurement for this task, and certainly the one I recommend to women, is your Body Fat Percentage, which you can read more about in other articles within this category of the site.

    Enjoy our articles?

    Sign up to get the latest updates!


    Your email address will be totally secure. We hate spam as much as you do, and we will NEVER pass your details on to anyone else.

    body composition fat loss
    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    Previous ArticleCompetiton Tanning
    Next Article How to Calculate Body Fat Percentage and Why
    Fabian
    • Facebook

    Fabian Colussi is a women's Bikini and Figure competition coach for natural athletes, certified personal trainer and gym instructor, and women's fitness consultant. He also has a background in martial arts, is an NLP Master Practitioner, and has a certification in Hypnotherapy. Fabian is a co-owner and co-founder of Million Dollar Baby Fitness.

    Related Posts

    Whey Protein – What it Can and Can’t Do For You

    22 September, 2017

    The 5 Biggest Health and Fitness Lies You’ll Come Across

    10 September, 2017

    5 Secrets to Sculpting a Toned Body Without Getting Bulky

    29 August, 2017

    1 Comment

    1. shann mark on 21 June, 2013 11:48 pm

      Remember when the body mass index chart first came out? People
      were running to calculators trying to find out if they are considered overweight and unhealthy. Many, especially athletes, were quickly shocked to find out they were labeled obese.

      Reply
    Reply To shann mark Cancel Reply

    Free E-Books!

    21 Signs That You Need to Fire Your Coach or Trainer

    For gym-goers - from casuals, to fitness models, to competition athletes
    (Updated 2021 Edition)

    The Essential Exercise Handbook

    How to Go From Couch Potato to Workout Warrior the RIGHT Way

    Your email address will be totally secure. We will NEVER pass your details on to anyone else.

    Tags
    abs (6) athletes (13) attitude (52) beliefs (9) body composition (6) carbohydrates (15) cellulite (2) cheat meals (4) clean eating (3) dietary fat (8) dietary fiber (1) dieting (18) false advertising (6) fat loss (42) fitness lifestyle (31) flexible dieting (1) foods (11) Gloria Kaneko (17) glycemic index (8) goals (16) gym life (26) hiit (12) leg/glute training (6) mental conditioning (6) mental programming (14) mental toughness (12) metabolic damage (8) metabolism (18) muscle building (4) never quit (13) obesity (1) overcoming obstacles (17) protein (9) role models (3) self-motivation (12) supplements (4) support network (5) training equipment (9) training technique (24) training zones (6) wellbeing (15) workout program (10)
    stronger. braver. FIGHTER. Blog
    About
    About

    We inspire and empower women who want to start living life as it was meant to be, to rebuild themselves physically, mentally and emotionally through fitness.

    We're social, connect with us:

    Facebook X (Twitter) Instagram YouTube
    Latest Posts

    My 3-Year Fight for Life Against Depression

    15 May, 2021

    My Battle with Anxiety and Depression

    15 July, 2018

    Lunges – Glute Exercise or Quad Exercise?

    11 December, 2017
    Instagram
    #strongerbraverfighter #neveroutofthefight #unsto #strongerbraverfighter #neveroutofthefight  #unstoppable #unbreakable
    #strongerbraverfighter #neveroutofthefight #unsto #strongerbraverfighter #neveroutofthefight  #unstoppable #unbreakable
    Instagram post 17964077585928187 Instagram post 17964077585928187
    #strongerbraverfighter #neveroutofthefight #unsto #strongerbraverfighter #neveroutofthefight  #unstoppable #unbreakable
    Instagram post 17907597795056360 Instagram post 17907597795056360
    Instagram post 18118238539470008 Instagram post 18118238539470008
    Instagram post 17874580053264056 Instagram post 17874580053264056
    Instagram post 18510572845003192 Instagram post 18510572845003192
    #strongerbraverfighter #neveroutofthefight #unsto #strongerbraverfighter #neveroutofthefight  #unstoppable #unbreakable
    Instagram post 17961902129948224 Instagram post 17961902129948224
    #strongerbraverfighter #neveroutofthefight #unsto #strongerbraverfighter #neveroutofthefight  #unstoppable #unbreakable
    Instagram post 18185394949316531 Instagram post 18185394949316531
    © 2025 Million Dollar Baby Fitness
    • About Us
    • Privacy Policy
    • Terms of Use
    • Contact

    Type above and press Enter to search. Press Esc to cancel.