Easy guide to calculate your BMI

BMI is a useful index and here we tell you how to calculate it manually. It is quite easy, and senior student can determine the value simply follows our instruction. Follow these steps below, and calculate your BMI now.

(If you hate math, just ignore the below content, and come to our online BMI calculator here)

First of all, use an accurate body weight scale to measure your body weight. And measure your height by growth chart or height rod.

Calculate your BMI with the below formulation if you measure by lbs and feet.

  • BMI = weight in lbs. times 703 divided by height in square inches;
  • or BMI = weight in lbs. times 4.88 divided by height in square feet.

Suppose that there is a man who is 172 lbs and 6 feet 1 inch tall, we can calculate his BMI by following method.

  • BMI = (172 * 703) / (73 * 73) = 120916 / 5329 = 22.7 rounded to a single decimal.

calculate your BMICalculate your BMI with the below formulation if you measure by meter and kg.

  • BMI = weight in kilograms divided by height in meters squared.

Suppose that there is a person who is 1.85 meters and 78.2 kilograms, the BMI can be calculated as below.

  • BMI = 78.2 / (1.85 * 1.85) = 78.2 / 3.4 = 22.8

When you got your value of BMI, you can compare it with a normal BMI level for men, women or children, and see if your level is healthy.