BMI Calculator

Tells you whether your weight is in a healthy range for your height. It’s a quick indicator for underweight, healthy, overweight, or obese categories.

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BMI (Body Mass Index)

BMI is a useful screening tool used by doctors and researchers, but it is just one piece of the puzzle. Understanding the context behind the number is key to better health.

What Does BMI Tell You?

  • BMI (Body Mass Index) measures the ratio of your weight to your height.
  • It’s often used by doctors, dieticians, fitness trainers, and health insurers to estimate whether your weight is healthy for your height.
  • A higher or lower BMI can suggest risk for conditions like heart disease, diabetes, or high blood pressure, which are common in India.
  • Many people use BMI to decide if they need to lose or gain weight for better health.

Why BMI Isn’t Perfect

  • BMI was designed in the 19th century to study population health, not individual health.
  • It does not differentiate between fat and muscle, so an athlete and an unfit person of the same height and weight may have the same BMI.
  • Your body composition (ratio of muscle, fat, and bone) matters more than your weight alone.
  • In 2023, the American Medical Association advised that BMI should not be used alone to judge a person’s health.

What You Should Consider Along with BMI

Combine your BMI with other health checks such as:

  • Blood sugar levels (for diabetes).
  • Cholesterol and blood pressure tests.
  • Physical fitness assessments.

Consider your daily habits: diet, physical activity, sleep, and stress levels.

Indian diets and lifestyles vary widely, so individual assessment by a doctor or nutritionist is more accurate than BMI alone.

Weight Status Categories (Adults)

UnderweightBelow 18.5
Healthy Weight (Ideal)18.5 – 24.9
Overweight25.0 – 29.9
Obesity Class 1 (Low Risk)30.0 – 34.9
Obesity Class 2 (Moderate Risk)35.0 – 39.9
Obesity Class 3 (High Risk)40.0 or above
  • BMI is just one piece of the puzzle.
  • Use it as a starting point, not as a final judgment on your health.
  • For a true picture, get regular health check-ups and discuss your results with a qualified medical professional.

Formula:

BMI=
weight (kg)height (m)2
Example:For 70 kg and 1.70 m,

BMI = 70 / (1.70)² = 24.2