Online BMI calculator - Health Crescent

Best Online BMI Calculator

Body mass index (BMI) is a method to calculate the body weight that puts you in some categories using a formula. It is an indication of your overall health. It is calculated by dividing body mass (in kg) over the square of your height (m or cm). Its SI units are kg/m2.

Formula for BMI =   Mass of body (kg) / Height m 2  

If weight is in pounds, you can calculate BMI by multiplying mass in pounds with an additional factor 703 and taking the height of your body in inches by the following formula.

Formula for BMI =   Mass (ib) x 703 / Height(in)^2

We have made an online BMI calculator for you. Using our online BMI calculator, you will get accurate results in seconds without delay.

How to use online BMI calculator?

You don’t need to perform some hectic calculations on our online BMI calculator. Simply put your weight and height in the required sections and then click calculate BMI to check your results.

Click HERE to calculate BMI online

Categories of BMI

There are four basic categories of BMI. These classifications are based on BMI values. The four categories are:

  • Underweight
  • Normal weight
  • Overweight
  • Obese

Under Weight

If you have a BMI value less than 18.5, it indicates that you are underweight. It also suggests that you need to gain weight to stay in better health because it is unhealthy to have a BMI of less than 18.5. It also means that you are prone to certain deficiencies such as proteins etc.

 Gain Weight by Following 5 Simple Steps

Normal weight

If you have a BMI value between 18.5 and 24.9, it means that you have maintained a healthy weight and shows that you are enjoying good health.


BMI between 25 and 29.5 is alarming. It suggests that you have a body weight more than the standards, and you are also at risk of obesity. You need to work on your health and lose some fat to stay in good shape.


You are Obese when you have a body mass index between 30 and 34.9. Obesity is a severe health condition that puts you at the risk of various diseases such as Heart attack, Diabetes, Hormonal Imbalance, Cancer, etc.


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