BMI Calculator

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BMI Calculator | Check Your Body Mass Index | KIMS-SUNSHINE Hospitals Hyderabad
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BMI Calculator
Know Your Healthy Weight

Calculate your Body Mass Index in seconds and get personalised health guidance from KIMS-SUNSHINE specialists.

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BMI Calculator

Enter your details to calculate your Body Mass Index

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ft
in
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ℹ️ This calculator is for adults (18+). BMI is a screening tool, not a medical diagnosis. Consult a doctor for clinical advice.

Your Result

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Enter your details to see your BMI
Fill in the form on the left and click Calculate.
Underweight
<18.5 Normal
18.5–24.9 Overweight
25–29.9 Obese
≥30
Underweight <18.5
Normal 18.5–24.9
Overweight 25–29.9
Obese ≥30

What is BMI?

Body Mass Index (BMI) is a numerical value calculated from a person's weight and height. It is a widely used screening tool to categorize individuals as underweight, normal weight, overweight, or obese. BMI is calculated using the formula:

BMI = Weight (kg) ÷ Height² (m²)

While BMI does not directly measure body fat, it correlates well with body fat percentage and is used by healthcare professionals worldwide as an initial screening tool for potential weight-related health issues.

BMI Classification Chart (WHO Standards)

BMI Range Category Health Risk Status
Below 18.5 Underweight Increased risk of nutritional deficiency Underweight
18.5 – 24.9 Normal Weight Low risk Healthy ✓
25.0 – 29.9 Overweight Moderate risk of metabolic diseases Overweight
30.0 – 34.9 Obesity Class I High risk Obese I
35.0 – 39.9 Obesity Class II Very high risk Obese II
40.0 and above Obesity Class III Extremely high risk Obese III

Why Does BMI Matter for Your Health?

An unhealthy BMI is linked to a wide range of serious health conditions. At KIMS-SUNSHINE Hospitals, our specialists treat thousands of patients each year for weight-related complications, including:

  • High BMI (Overweight/Obese): Type 2 diabetes, hypertension, heart disease, sleep apnea, certain cancers, and joint problems
  • Low BMI (Underweight): Nutritional deficiencies, weakened immune system, bone loss, anaemia, and fertility issues
  • Normal BMI: Lower risk of chronic diseases, better energy levels, and improved overall quality of life

Frequently Asked Questions

Everything you need to know about calculating BMI

Is BMI an accurate measure of health? +
BMI is a useful screening tool but does not directly measure body fat percentage or distribution. It does not distinguish between muscle and fat mass. Athletes may have a high BMI due to muscle. BMI is best used alongside other tests like waist circumference, blood tests, and a physical examination by a qualified doctor.
What is a healthy BMI for Indians? +
Research suggests that South Asians, including Indians, tend to develop metabolic complications at lower BMI levels. Many Indian health experts recommend a normal BMI range of 18.5–22.9 kg/m² for South Asians, with overweight classified at 23+ and obesity at 25+. Consult a KIMS-SUNSHINE specialist for guidance specific to your health profile.
What should I do if my BMI is high? +
If your BMI falls in the overweight or obese range, consult a healthcare professional. KIMS-SUNSHINE Hospitals offers specialist care in Dietetics & Nutrition, Bariatric Surgery, Endocrinology, and Internal Medicine. Our team can create a personalised plan including diet, exercise, and where needed, medical intervention. Book an appointment today at 8008108108.
Does BMI differ for men and women? +
The BMI formula is the same for men and women, but body fat percentage at the same BMI may differ. Women generally have more body fat than men at the same BMI level. This is why BMI is often interpreted alongside gender, age, and other health factors by medical professionals.
Can children use this BMI calculator? +
This calculator is designed for adults (18 years and above). BMI in children and teens is interpreted using age- and sex-specific percentile charts, which differ from adult classifications. For paediatric weight assessment, please consult our Paediatrics department at KIMS-SUNSHINE Hospitals.