BMI Calculator – Calculator for adults, children and teenagers

What does Body Mass Index mean?

Your Body Mass Index (BMI) is a relationship between weight and height that is associated with body fat and health risk. It can help you find out if your weight is normal, too much or too little for your built.

BMI is a mathematical formula that takes into account both a person’s height and weight.

The Body Mass Index (BMI) calculation is designed for adults between the ages of 18 and 65 years. The BMI is not suitable for you if:

  • You are outside this age range
  • Pregnant
  • A nursing or lactating woman
  • A competitive athlete
  • A body builder
  • Have a muscular build
  • Are convalescing or have lost significant body tone

How to Calculate Body Mass Index?

  1. Take your weight, in kilograms/pounds (1 kilogram = 2.2 pounds)
  2. Measure your height in centimeters/feet (1 ft = 30.48 cm, 1 inch = 2.5 centimeters)
  3. Divide your weight by your height squared Kg / (cm)²

BMI Calculator Chart


Underweight = <18.5
Normal weight = 18.5–24.9
Overweight = 25–29.9
Obesity = BMI of 30 or greater

Calculate your Body Mass Index

BMI Calculator

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Your BMI is......

less than 18.5:Underweight
18.5 - 24.9:Normal weight
25 - 29.9:Overweight
30 - 34.9:Class I Obese
35 - 39.9:Class II Obese
40 upwards:Class III Obese


The Different Types of Body Mass Index by using the BMI calculator. You will be able to tell if your weight is no longer ideal for your height.
Even though most of the time, your body fat is the one responsible for your excessive weight or lack.

Individuals with a healthy BMI are between 18.5 and 25 – that’s usually considered optimal weight.

Those below 18.5 are likely to underweight, while those under 17.5 may have an eating disorder.

People with a body mass index over 25 are often overweight, while those with a BMI over 40 maybe morbidly obese.

There are special cases such as some bodybuilders where BMI is less useful.

Underweight: For People Whose BMI is equal to or lower than 18.5

By computing your Body Mass Index, if your weight is lower than what it should be.

It is best to talk to your doctor to find out if you need to add more pounds. Since a low body weight can weaken the immune system of your body. This can make you more susceptible to certain medical problems such as bone and nutrition issues.

You get more and more susceptible to these types of medical problems as your BMI gets lower.

Normal: For People Whose BMI is more than 18.5 and less than 24.9

If your BMI falls within this range. You are in great shape. It means that your BMI is within normal limits which makes you less susceptible to diseases, more fit to live a longer life and have a better physique.

Overweight: For People Whose BMI is more than 25 and less than 29.9

If your BMI are officially overweight. It’s means that you will need to exercise more or eat healthier foods. You are more susceptible to certain diseases if your BMI is within this range.

You become even more susceptible if your BMI is more than 27 but is less than 29.99.

Some studies out there were able to prove that women who have a BMI of 27.3 and men who have a BMI of 27.8 are more prone to develop hypertension, heart problems, and diabetes.

When this happens, the best thing that you can do is to measure your waist and find out if it is within the acceptable range.

Obese Class 1: For People Whose BMI is more than 30 and less than 34.99

If your BMI falls within these values, you are officially unhealthy. You are more likely to develop gall bladder problems, cancer, hypertension, heart problems, and diabetes. You are even more at risk if your waistline is larger than the recommended.

It would do you a lot of good if you change the way that you live. You will need to trim down for about 10% . Consult your physician as well. By doing so, you will become healthier in all aspects.

Obese Class 2: For People Whose BMI is more than 35 and less than 35.99

When your BMI is more than 35 and less than 35.99. You can suffer from health problems caused by your weight. you are more likely to die from it as well.

For you to normalize your BMI. You will need to consult your physician.

Obese Class 3/Morbid Obesity: For People Whose BMI is more than 40

If your BMI is higher than 40. Then you are even more to develop health problems. You can die at any given time. You might even be suffering from this type of health problem already.

If you want to keep on living. You will need to consult your physician and other types of specialists.

Getting Healthy By Understanding Your Body Mass Index

Getting healthy is an important goal for anyone seeking to succeed at dieting. Unfortunately, at times this goal becomes secondary to fast weight loss. So many popular diets current on the market. It is not surprising that consumers have a hard time making a go of their goal.

In order to succeed with getting healthy and not falling for popular diets that are little more than fads. Understanding your body mass index is a crucial task.

What is the Body Mass Index?

Your Body Mass Index, or BMI, is a scientific calculation that helps anyone ready to get started on their road to getting healthy.

To understand how much dieting they may have to do to reach their ideal weight. Unlike fast weight loss diets that sell temporary girth reduction. The body mass index disregards fashion and instead focuses on the weight that is healthy for you to carry by virtue of your size.

Getting Healthy Versus Popular Diets

Any kind of dieting should be done for the sole reason of getting healthy, not to fit into that little black dress. While fast weight loss regimens and some popular diets may help you temporarily fit into that dress. They also encourage a quick regaining of the weight.

On the other hand, achieving a weight that is indicated by your body mass index. It will lead not only to healthy dieting techniques but also results in the lifestyle changes required to keep your weight there.

Even if you might not think that your little black dress is looking that great on you. The knowledge that you are healthy goes a long way to glossing over some minor fashion concerns.