(Body Mass Index) BMI Calculator

Calculate BMI accurately with our user-friendly online tool. Get insights into your health and make informed choices. Try it now!

BMI Result

  • Healthy BMI Range: 18.5 - 25 kg/m²
  • Healthy Weight for Height: 59.9 - 81.0 kgs
  • BMI Prime: 0.8
  • Ponderal Index: 11.1 kg/m³
Classification BMI range - kg/m² Category Percentile Range
Severe Thinness < 16 Underweight < 5%
Moderate Thinness 16 - 17 Underweight 5% - 85%
Mild Thinness 17 - 18.5 Underweight 5% - 85%
Normal 18.5 - 25 Healthy weight 5% - 85%
Overweight 25 - 30 At risk of overweight 85% - 95%
Obese Class I 30 - 35 Overweight > 95%
Obese Class II 35 - 40 Overweight > 95%
Obese Class III > 40 Overweight > 95%

The Online BMI Calculator offers a reliable way to determine your Body Mass Index (BMI) and assess your weight status based on age, gender, height, and weight. This valuable tool provides measurements in various units, including kilograms, feet, and centimeters. Let’s delve into how BMI works and its significance in gauging your overall health.

Understanding BMI:

BMI serves as a gauge of an individual’s body weight in relation to their height. This quantification of tissue mass assists in evaluating whether one’s weight is within a healthy range. It’s important to remember that while BMI is a helpful indicator, it doesn’t consider factors like muscle mass and body composition.

Metric Units (SI): BMI = Weight (kg) / Height² (m²)

US Customary Units: BMI = 703 × Weight (lbs) / Height² (in²)

(Body Mass Index) BMI Calculator

How to Use the BMI Calculator:

Simply input your age, gender, height, and weight into the calculator to get an accurate BMI reading. The tool takes into account various measurement systems, such as metric units, US units, and other units, ensuring flexibility for users worldwide.

BMI Categories for Adults:

For adults aged 20 and above, BMI values fall within specific categories:

  • Severe Thinness: BMI < 16
  • Moderate Thinness: BMI 16 – 17
  • Mild Thinness: BMI 17 – 18.5
  • Normal: BMI 18.5 – 25
  • Overweight: BMI 25 – 30
  • Obese Class I: BMI 30 – 35
  • Obese Class II: BMI 35 – 40
  • Obese Class III: BMI > 40

BMI Categories for Children and Teens (Ages 2-20):

The BMI Calculator also considers the unique growth patterns of children and teens:

  • Underweight: BMI < 5th percentile
  • Healthy Weight: BMI 5th – 85th percentile
  • At Risk of Overweight: BMI 85th – 95th percentile
  • Overweight: BMI > 95th percentile

Benefits of Maintaining a Healthy BMI:

Maintaining a healthy BMI is linked to a reduced risk of various health conditions. By achieving a BMI within the normal range, you can lower your chances of:

  1. High blood pressure
  2. Type II diabetes
  3. Heart disease
  4. Stroke
  5. Joint issues
  6. Sleep apnea
  7. Certain cancers
  8. Mental health concerns


The Online BMI Calculator is a valuable tool that allows individuals to gauge their body weight relative to their height, age, and gender. This assessment can offer insights into overall health and potential risks associated with weight. Remember that BMI is just one aspect of a comprehensive health assessment, and consulting a healthcare professional for personalized advice is recommended. Start using the BMI Calculator today to make informed decisions about your health and well-being.

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