Medically reviewed by Suzanne Fisher, RD Key Takeaways Body mass index (BMI) is a calculation used to estimate your body fat.

Dr. Glickman says doctors will calculate BMI by dividing your weight in kilograms by your height in meters squared. Here's the exact formula: BMI = weight (in kilograms)/height (in meters)2 In the ...

In general, people are considered to be at a healthy weight if their BMI is between 18.5 and 24.9. A BMI of 25 or more is considered overweight, while a BMI of 30 or higher is considered obesity.

The current BMI calculation gives tall people the short end of the stick, an Oxford mathematician says. Body mass index, or BMI, has long been used as the quickest measure of whether a person&#8217… ...

The BMI formula, developed in the 1800s by a Belgian statistician and sociologist, divides a person's weight, in kilograms, by the square of his or her height, in meters.