BMI Calculator

BMI Calculator helps you to check the Body Mass Index status of men and women. Also, it uses height and weight to measure your BMI.


What is BMI Calculator?

BMI calculator is an online tool used as a trustworthy indicator of a person's body weight as per their height. In other words, using this tool you can determine your body mass index status in correspondence with your height and weight. Also, our body mass index calculator supports both "US/UK Units" and "Metric Units". So, you can enter the height in inches or centimeters and weight in pounds or kilograms.

Most importantly, this tool is absolutely free and easy to use. You just need to enter the height and weight and press the "Calculate" button. That's it. As a result, you will get an accurate BMI status instantly. Our Calculator will display your BMI, BMI category, and the health risk associated with the category.

BMI Calculator for Men and Women

What is BMI?

BMI (Body Mass Index) measures the leanness or thinness of a person based on their height and weight. It serves as an indicator of if the person has a healthy body weight according to their height. The value we get from the calculation of BMI is then used to determine whether a person is underweight, normal, overweight, obese, or severely obese depending on the range in which the value lies.

BMI Categories Table

The BMI ranges can vary based on various factors like region, age, gender, etc. Below we have discussed the different BMI categories that the body mass index calculator follows along with the different health risks associated with each category.

BMI Category BMI Range (kg/m2) Health Risk
Underweight 18.5 and below Malnutrition Risk
Normal weight 18.5 - 24.9 Low Risk
Overweight 25 - 29.9 Enchanced Risk
Moderately Obese 30 - 34.9 Medium Risk
Severely Obese 35 - 39.9 High Risk
Very Severely Obese 40 and above Very high Risk

Today, almost everyone is health-conscious. Everyone wants to know the category of their weight. Whether they are underweight, normal, overweight, or obese. Also, BMI helps to manage your health. So, if you want to determine your weight category or want to check your body mass index, use our BMI calculator.

BMI Formula

There are two different formulas to calculate BMI.

1. If mass in pounds (lbs) and height in inches (in):

BMI(kg/m2) =  
  × 703

2. If mass in kilograms (kg) and height in meters (m):

BMI(kg/m2) =  

How to Calculate Body Mass Index?

As we discussed before, there are two formulas or methods based on the units to calculate the body mass index. Let's understand both with examples.

1. For US/UK Units

In this method, we will take the height in inches and weight in pounds. Now follow the steps below.

  1. If the height is in feet then firstly convert it into inches. You can simply multiply the feet value by 12 to get inches. For Example, 5 feet = 5 × 12 = 60 inches.
  2. Use the weight in pounds(lbs).
  3. Now place the value in the formula and do the simple math calculation.
  4. Lastly, multiply the resultant value by 703 to get your BMI.

Let's take an example to understand the above all steps.


Suppose, Height = 5 feet and 11 inches = 71 inches
Weight = 155 pounds (lbs).

Let's place the above values in the BMI formula.

BMI =  
  × 703
BMI =  
  × 703
BMI = 21. 62

2. For Metric Units

In this method, we will take the height in meters and the weight in kilograms. Now follow the instructions below.

  1. Firstly, convert the height into meters. If it's in centimeters, you can simply divide the centimeter value by 100. For Example, 1000 cm = 1000/100 = 10 m
  2. Keep the weight in kilograms.
  3. Place the height and weight value in the formula and do the math calculation.

Let's take an example to understand the full calculation process.


Let's suppose, Height = 180 cm = 180/100 = 1.8 m
Weight = 75 kg

BMI =  
BMI =  
  = 23.15

However, if you do not wish to calculate BMI manually with the above formulas, you can use our BMI calculator to make this process easy, fast, and accurate.

Features of BMI Calculator

  • Free to use: The body mass index calculator is absolutely free to use and does not include any sort of hidden charges.
  • Accurate results: It gives accurate as well as instant results.
  • User-friendly: The UI of this tool is designed in a way to give the users a smooth and effortless experience. You just need to enter the height and weight. That's it. The tool will automatically calculate the BMI and display the BMI status within a second.
  • No prerequisites: Our calculator does not ask you to login or signup to calculate the BMI. Also, you don't need to install anything to get calculator access. Just open it on any web browser and start using it.
  • All-in-one Calculator: This tool lets you calculate the BMI of both men and women.

How to use BMI Calculator?

  1. Firstly, open the BMI Calculator on any browser.
  2. Select the type of unit in which you will be entering height and weight. There are two unit options. "US/UK Units" and "Matric Units".
  3. After that, enter the height and weight. If you select US/UK units, enter the height in feet and inches and weight in pounds. If you select Metric units, enter the height in centimeters and weight in kilograms.
  4. Lastly, press the "Calculate" button. As a result, the calculator will display the BMI, BMI category, and health risk within a second on your device's screen.
  5. To clear the input and output fields, use the "Reset" button.


As per the WHO reports, a BMI between 18.5 to 24.9 is considered ideal or low risk or healthy for men as well as women.

This tool can be used on any type of device. Whether it is mobile, tablet, laptop, or PC. Provided that the device has an active internet connection and browser support.

Open the calculator on your web browser. Select the unit type, enter the height and weight, and press the Calculate button. The results will be displayed instantly. That's it.

Most importantly, you can use this calculator to calculate BMI for both men and women. You can also use it to determine the BMI category and the various health risks associated with each category.

It supports US/UK Units and Metric Units. Also, it has dedicated tabs for these two units. So, you first need to select the unit in which you wish to enter the inputs and then you can calculate BMI.

If your BMI is 25 then you are on the borderline. So, it's very much recommended to lose some weight to reach the ideal BMI range.

No, you can't use the body mass index calculator offline. It's online tool. So, you will need a strong and stable internet connection to use it.