Body Mass Index Calculator

To determine if you're at a healthy weight, enter the following information and calculate your body mass index (BMI).

Metric Units
Imperial Units




Know your Body Mass Index (BMI)

Body Mass Index (BMI) is a gross estimate for the amount of fat in your body. Learn whether you need to lose weight or not. Not all adults who have a BMI in the range labelled "healthy" are at their most healthy weight. They may have lots of fat but very little muscle. Similarly, if you exercise a lot, then you may have lots of muscle and less fat and if your BMI is more than the normal range, then it may still be healthy.

Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. Enter your weight and height using imperial or metric measures. Click on "Compute BMI" and your BMI will appear below.

The body mass index (BMI) is a statistic developed by Adolphe Quetelet in the 1900's for evaluating body mass. It is not related to gender and age. It uses the same formula for men as for women and children.

Body Mass Index Formula

The body mass index is calculated based on the following formula:

Metric Units

BMI = (Weight in Kilograms / (Height in Meters x Height in Meters))

Imperial Units

BMI = (Weight in Pounds / (Height in inches x Height in inches)) x 703

Body Mass Index (BMI) Table for Adults

The World Health Organization's (WHO) recommended body weight based on BMI values for adults. It is used for both men and women, age 18 or older.

CategoryBMI Range
Severe Thinness< 16
Moderate Thinness16 - 17
Mild Thinness17 - 18.5
Normal18.5 - 25
Overweight25 - 30
Obese Class I30 - 35
Obese Class II35 - 40
Obese Class III> 40


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Joydeep Deb

is a Senior Digital Marketer and Project Manager with 13+ years of experience in Digital Marketing, Lead Generation, Online Brand Management, Marketing Campaigns, Project Management, Search Engine Optimization (SEO), Search Engine Marketing (SEM), PPC, eMail Marketing, Web Analytics, Web Technologies, Web Design and Development.

With an MBA in Marketing. IIM Calcutta Alumini. Lives in Bangalore, Karnataka - India.

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Body Mass Index Calculator


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