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BMI Calculator

Calculate your Body Mass Index to see if you are at a healthy weight.

BMI Calculator

Enter your height and weight to see your BMI.

Understanding Your BMI (Body Mass Index) in India

The Body Mass Index (BMI) is a simple, standardized measure that uses your height and weight to estimate whether you fall into a healthy weight category. Developed in the 19th century by Adolphe Quetelet, it remains the most common screening tool utilized by doctors, dietitians, and fitness professionals in India to identify potential weight problems in adults.

How is BMI Calculated?

The formula for determining your BMI is straightforward and completely independent of gender or age (for adults). It is measured in kilograms per square meter (kg/m²).

BMI = Weight (in kg) / Height (in meters)2

If you measure your height in centimeters (which is common in India), you must first divide it by 100 to convert it to meters before squaring it. Our BMI Calculator handles these metric and imperial (feet/inches) conversions automatically for you.

BMI Categories (Asian Indian Specific)

While the World Health Organization (WHO) provides global BMI cut-offs, the Ministry of Health in India has recommended slightly revised, lower guidelines specifically for Asian Indians due to a higher genetic predisposition to central adiposity (belly fat) and metabolic diseases at lower body weights:

  • Underweight: Below 18.5
  • Normal Weight: 18.5 to 22.9
  • Overweight: 23.0 to 24.9
  • Obese: 25.0 and above

Example: Calculating BMI

Let's assume an adult male named Rahul weighs 75 kg and is 175 cm (1.75 meters) tall.

  • Step 1 (Square the height): 1.75 × 1.75 = 3.0625
  • Step 2 (Divide weight by height squared): 75 / 3.0625 = 24.49

Rahul's BMI is 24.49. According to the Asian Indian guidelines, this places him in the Overweight category, suggesting he should monitor his diet and incorporate regular cardiovascular exercise.

Is BMI Always Accurate?

While the Calculay BMI test is an excellent initial health indicator, it has limitations. It does not differentiate between weight coming from muscle mass versus body fat. A heavily muscular athlete might have an "Obese" BMI despite having extremely low body fat. For a more comprehensive health assessment, checking your Body Fat Percentage or waist-to-hip ratio alongside your BMI is recommended.