BMI Calculator: Calculate Body Mass Index & Ideal Weight

Check if your weight is ideal with our BMI (Body Mass Index) calculator. Know your nutritional status according to WHO and international health standards.

Input Parameters

Advertisement Configured

Ready to Calculate

Fill in the required parameters on the left and click calculate to see the detailed results and analysis.

Advertisement Configured

Understanding Body Mass Index (BMI) as a Health Indicator

Maintaining weight within the ideal range is not just about aesthetics, but also an important investment in long-term metabolic health. Body mass that is in the ideal range can lower the risk of chronic diseases such as diabetes, cardiovascular disease, and joint disorders. Our BMI Calculator helps you monitor your nutritional status quickly and easily.

What is BMI?

BMI is a ratio between a person's weight (in kilograms) and the square of their height (in meters). The resulting number helps determine whether you fall into the category of underweight, normal, overweight, or obese.

BMI Classification According to the World Health Organization (WHO)

The WHO identifies the following standard ranges for most adults globally:

  • •Underweight: BMI < 18.5
  • •Normal Weight: 18.5 – 24.9
  • •Overweight: 25.0 – 29.9
  • •Obesity (Class I): 30.0 – 34.9
  • •Obesity (Class II): 35.0 – 39.9
  • •Severe Obesity (Class III): > 40.0

    • Health Risks Related to Weight

    Knowing your BMI status is crucial because extreme weight (too low or too high) carries risks of various diseases:

  • •Effects of Obesity: Increases the risk of type 2 diabetes, hypertension, coronary heart disease, stroke, and respiratory disorders.
  • •Effects of Underweight: Risks include anemia, malnutrition, osteoporosis, and decreased immune system function.

    • Limitations of BMI Calculation

    It is important to understand that BMI is a basic screening tool, not a single diagnostic tool. BMI has several limitations:

  • •Muscle Mass: Bodybuilders may have an "Obese" BMI due to heavy muscle mass, even though their fat levels are very low.
  • •Fat Distribution: BMI does not tell us where fat is stored. Visceral (abdominal) fat is much more dangerous than fat on the hips.
  • •Age and Gender: Children, adolescents, and the elderly have different ways of reading BMI tables.

    • Tips for Achieving an Ideal Weight

    If the calculator results show you are outside the normal range, start with small steps:

  • •Manage Diet: Focus on balanced nutrition with appropriate portions of carbohydrates, protein, and fiber.
  • •Physical Activity: Perform moderate-intensity exercise such as brisk walking for at least 150 minutes per week.
  • •Sufficient Rest: Lack of sleep can disrupt metabolism and increase hunger hormones.

    • How to Use This BMI Calculator

    Simply choose your preferred unit system (Metric for kg/cm). Enter your current weight and height numbers. The calculator will automatically calculate your numerical BMI value and provide a description of your nutritional status category based on international health standards.

    ? Frequently Asked Questions

    Q What BMI is considered normal for an adult?

    Based on international standards, the normal BMI range is between 18.5 and 24.9. A number above 25 is categorized as overweight or fat.

    Q Is this BMI calculator applicable to children?

    This calculator is designed for adults (age 20 and above). For children and adolescents (age 2-19), BMI calculations must be adjusted using specific growth curves based on age and gender (BMI-for-Age).

    Q Why must height be squared in the BMI formula?

    Statistically, a person's body mass tends to be proportional to the square of their height. This is the best mathematical model to get a simple estimation of body mass density.

    Q Can BMI detect muscle mass?

    No. BMI only measures total body mass relative to height. It cannot distinguish between fat mass, muscle, bone, or water levels in the body.

    Q What is the next step if my BMI result is 'Obese'?

    Do not panic, but start consulting with a doctor or nutritionist. You may need to perform additional tests such as checking waist circumference, blood pressure, and laboratory tests (cholesterol & blood sugar).