BMI Calculator


BMI Body Mass Index

At BMI Calculator, we're dedicated to providing accurate assessments of your body mass index (BMI) to help you monitor your health effectively. Our user-friendly tool calculates BMI based on your height and weight, enabling you to understand your weight status with ease. Whether you're aiming for weight loss, maintaining a healthy lifestyle, or simply curious about your BMI, we've got you covered. Trust our reliable platform to deliver precise results promptly, empowering you to make informed decisions about your health and well-being. Join countless users who rely on our BMI calculator for insightful insights into their body composition and overall health.

How to Work BMI Estimate?

BMI Calculator is a user-friendly tool designed to help you accurately calculate your Body Mass Index. Follow these simple steps to utilize its features effectively:

  1. Enter Your Information:
    • Weight: Input your weight in pounds for US units and kilograms for Metric units. Click on the textbox next to "Weight" and type in your weight using your keyboard.
    • Height: Input your height in feet and inches for US units and centimeters for Metric units. Click on the textbox next to "Height" and enter the value as part of your height.
    • Age: Input your age in years. Click on the text box next to "Age" and type in your age using your keyboard.
    • Gender: Select your gender from the drop-down menu. Click on the drop-down menu next to "Gender" and choose either "Male" or "Female".
  2. Calculate Your BMI: After entering your information, click on the "Calculate BMI" button. This will trigger the calculation of your Body Mass Index based on the information you provided.
  3. View Results:
    • Once you click the "Calculate BMI" button, the BMI value will be displayed along with an interpretation of your BMI category (e.g., Underweight, Normal weight, Overweight, etc.).
    • You will also see the healthy BMI range, healthy weight range for your height, and any suggested weight changes to reach a healthier BMI if applicable.
    • Additionally, the BMI Prime and Ponderal Index values will be shown.
  4. Interpret Your BMI: Based on the BMI value calculated, you can interpret whether you fall into the underweight, normal weight, overweight, or obese category. This can give you an indication of your overall health status in terms of weight.
  5. View the BMI Chart: A graphical representation of your BMI will be displayed in a radial chart format. This chart visually represents your BMI value and its interpretation.
  6. Make Adjustments: If desired, you can make adjustments to your weight and height inputs and recalculate your BMI by following steps 2-4 again.
  7. Repeat as Needed: You can use the BMI Calculator multiple times as needed to track changes in your weight and BMI over time or to compare different scenarios.
  8. Understand Limitations: Keep in mind that while BMI is a useful tool for assessing weight-related health risks for most people, it may not be accurate for everyone, especially athletes, bodybuilders, and pregnant or lactating women. Always consult with a healthcare professional for personalized advice and interpretation of your BMI results.

Discover your Body Mass Index effortlessly with the BMI Calculator. Try it now to simplify your health assessments!

What is BMI?

Calculating BMI involves a straightforward process. Begin by determining your weight and height. Once you have these values, follow these steps:

  1. Square your height by multiplying it with itself.
  2. Divide your weight by the result obtained in the first step.

Here are the equations for BMI calculation:

For the International System of Units (SI):

BMI = weight(kg) / (height(m) * height(m))
Let's consider an individual who is 177 cm tall (1.77 m) and weighs 75 kg,
BMI = 75 / (1.77 × 1.77)
= 75 / 3.13
= 23.96

For the Imperial System:

BMI= (weight(lb) / (height(inches) * height(inches))) x 703
For someone weighing 160 pounds and standing at 5 feet 8 inches (68 inches),
BMI = (160 / (68×68)) x 703
= (160 / 4624) x 703
= 24.3

BMI is a widely used tool in healthcare and fitness because it's simple to calculate and provides a quick assessment of an individual's weight status. However, it's essential to remember that BMI is a screening tool and doesn't directly measure body fat. It may not be accurate for athletes, pregnant women, or individuals with significant muscle mass, as it doesn't differentiate between lean mass and fat mass. For a comprehensive evaluation of health, other factors such as waist circumference, body composition, and overall fitness level should also be considered.


  • What is BMI?
    BMI stands for Body Mass Index, which is a measure of body fat based on your height and weight. It provides an indication of whether you are underweight, normal weight, overweight, or obese.

  • How is BMI calculated?
    BMI is calculated by dividing your weight in kilograms by the square of your height in meters. Alternatively, you can use our BMI calculator tool for quick and accurate results.

  • What does my BMI value indicate?
    Your BMI value categorizes you into different weight status categories: underweight (BMI < 18.5), normal weight (BMI 18.5 - 24.9), overweight (BMI 25 - 29.9), or obese (BMI ≥ 30).

  • Is BMI an accurate measure of body fat?
    While BMI is a useful screening tool, it does not directly measure body fat. Factors such as muscle mass, bone density, and distribution of fat can affect BMI results.

  • How often should I check my BMI?
    It's recommended to check your BMI periodically to monitor changes in your weight status, especially if you're undergoing weight management or fitness programs.

  • Can children and adolescents use the BMI calculator?
    Yes, our BMI calculator can be used for children and adolescents, but the interpretation of BMI results differs based on age and sex. Consult a healthcare professional for proper assessment.

  • What should I do if my BMI indicates I'm overweight or obese?
    If your BMI suggests overweight or obesity, consider adopting healthier lifestyle habits such as balanced diet, regular exercise, and seeking guidance from a healthcare provider for personalized advice.