Calculate Your Body Mass Index

Body Mass Index, or BMI calculators have been the basic standard by which the average patient can help determine his or her eligibility for weight loss surgery. The BMI calculator can both describe what weight category you fall into and help you track your weight with a simple easy-to-understand number.

BMI calculations are approximate values and are intended to be used only as a rough guide. BMI calculators do not take into account muscle structure and age.

The BMI is calculated by multiplying your weight in lbs by 703. Take that number and divide it by your height (in inches) squared:

(Weight in Lbs) x 703 / (Height in Inches)2

Your BMI is:
Underweight < 18.5
Normal Weight 18.5 – 24.9
Overweight 25 – 29.9
Obesity, Class 1 30 – 34.9
Severe Obesity, Class 2 35 – 39.5
Morbid Obesity, Class 3 40+

How To Read the BMI Calculation

Underweight less than 18.5
Normal 18.5-24.9
Overweight 25-29.9
Obese I 30-34.9
Obese II 35-39.9
Morbid Obesity 40 and above


Advanced Surgical Associates is one of the first exclusively surgical groups practicing in Union County New Jersey. And that is just the first of many firsts for ASA. For over 40 years, we have pioneered breakthrough surgical patient care in North Jersey in both general and weight loss surgery. ASA also offers gastric bypass, gastric sleeve and gastric banding to those suffering from obesity in New Jersey.
© 2020, Advanced Surgical Associates, Bariatric & General Surgery, Springfield, New Jersey