# Body Mass Index (BMI) Calculator

The BMI Calculator calculates the Body Mass Index which is a measure of obesity for adult men and women. The BMI is calculated by dividing the body weight (in kilograms) by the height (in meters) squared (BMI = weight/height2). The BMI will overestimate fatness in people who are muscular or athletic, but fit persons will have a Waist-to-Height ratio less than 0.5, whereas overweight people have Waist-to-Height ratios greater than 0.5.

 Underweight BMI less than 18.5 Normal weight BMI 18.5 to 24.9 Overweight BMI 25 to 29.9 Obese BMI 30 or greater Morbidly Obese BMI 40 or greater

 Ronnie Coleman  Mr. Olympia  BMI 41.4

then click the "Compute BMI" button.
 U.S. Units Metric Units
Height:

Weight:
feet    inches

pounds
centimeters

kilograms

Body Mass Index (BMI)         kg/m2

BMI Calculator for Women, BMI Calculator for Men
BMI is calculated based on the weight and the height of a person. There is no such thing as a BMI calculator for females or a BMI calculator for males, but as the pictures show, men and women have different weight distributions. Men tend to accumulate mass at the waist, whereas women accumulate weight in the hips and buttocks.

The Body Mass Index was invented by Adolphe Quetelet in the first half of the 19th century. Although the index does not measure the percentage of body fat, it is used to estimate a healthy body weight based on a person's height. It is the most widely used metric for identifying individuals with weight problems within a population due to its ease of measurement and calculation.

Several persons have asked whether the images are accurate representations of the Body Mass Index for actual persons. Professor Brian Curless, who developed these images, replied:

I would say that these images are "plausible" estimates of body shape as a function of BMI for an individual.

The idea is that we took ~125 scans of women’s bodies and derived correlations between body shape and height and weight across a population (i.e., based on a cross-sectional dataset). We used these correlations to predict how any given scan would look if we were to modify its height and/or weight, or BMI.

I believe the results are at least plausible, because they are derived from detailed, real data, but I cannot argue that they are scientifically validated. For scientific validation, we would need to perform a longitudinal study; i.e., we would have needed to scan an individual before and after she changed her weight, and then see if our algorithm can predict the second scan given only the first scan and the before/after weights. Indeed, we would need to do this for many individuals across a wide range of weight changes for proper validation.

References:
1. Special thanks to Professor Brian Curless at the Department of Computer Science & Engineering, University of Washington for creating the woman images. [Brian Curless homepage]
2. Brett Allen, Brian Curless, Zoran Popović, Digital Humans [link]
3. Brett Allen, Brian Curless, Zoran Popović, The space of human body shapes: reconstruction and parameterization from range scans. [link]

Search for information about Body Mass Index:
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Calculate your BMI - Standard BMI Calculator
National Institute of Health (NIH) page uses height and weight (English or metric) to determine amount of body fat.
www.nhlbisupport.com/bmi/

Healthy Weight: Assessing Your Weight: Body Mass Index (BMI ...
Jan 27, 2009 ... Body Mass Index (BMI) is a number calculated from a person's weight and height. BMI provides a reliable indicator of body fatness for most ...
www.cdc.gov/healthyweight/assessing/bmi/

Jan 27, 2009 ... If an athlete or other person with a lot of muscle has a BMI over 25, is that person still considered to be overweight? ...

Healthy women of normal body mass index or BMI -- a measure of height to ... BMI is accepted globally as a good measure of whether someone is overweight. ...
Multiple Factors Tied to Risk of Pancreatic Cancer in Women? - Cancerpage.com
Influence of body mass index on the efficacy of revascularization ...? - The Journal of Thoracic and Cardiovascular Surgery

Body Mass Index calculator you'll like
Calculate your Body Mass Index (with this friendly BMI calculator) and compare yourself to other women or men of the same age and height.
www.halls.md/body-mass-index/bmi.htm

Body Mass Index Chart
Body mass index, or BMI, is a new term to most people. However, it is the measurement of choice for many physicians and researchers studying obesity. ...
www.consumer.gov/weightloss/bmi.htm

Body mass index - Wikipedia, the free encyclopedia
A graph of body mass index is shown above. The dashed lines represent subdivisions within a major class. For instance the "Underweight" classification is ...
en.wikipedia.org/wiki/Body_mass_index

Calorie Control Council | Body Mass Index Calculator
Body Mass Index (BMI) is one of the most accurate ways to determine when extra pounds translate into health risks. BMI is a measure which ...
www.caloriecontrol.org/bmi.html

NHLBI, Obesity Guidelines-Executive Summary-BMI Chart
Body Mass Index Table. for BMI greater than 35, go to Table 2 ...
The number at the top of the column is the BMI at that height and weight. ...
www.nhlbi.nih.gov/guidelines/obesity/bmi_tbl.htm

Body Mass Index (BMI)
Did you know you had a BMI? Body mass index is a calculation that uses your height and ...
BMI, although not a perfect method for judging someone's weight, ...
kidshealth.org/kid/stay_healthy/fit/bmi.html