BMI Calculator
Determine your Body Mass Index (BMI) instantly. Input your weight and height to get a quick evaluation of your body weight classification.
Calculate Your BMI
Enter details to see results
Fill in your weight, height, age, and gender on the left to compute your Body Mass Index (BMI).
What is a Body Mass Index (BMI)?
A **Body Mass Index (BMI)** is a simple calculation used to estimate body fat based on your height and weight. Calculating BMI helps identify whether a person falls into underweight, healthy weight, overweight, or obese categories. It is widely used by doctors and healthcare providers globally as a screening tool for prospective health risks.
Why are BMI Ranges Different for Indian Adults?
Standard international BMI ranges defined by the World Health Organization (WHO) are often not optimal for South Asian populations. Clinical research shows that Indian adults have a higher percentage of body fat and abdominal fat, and are more susceptible to cardiovascular disease, high blood pressure, and type-2 diabetes at a **lower BMI** compared to Western populations.
Consequently, the Indian Health Ministry and medical consensus guidelines have defined a lower threshold for healthy weight, overweight, and obesity among Indian adults:
| Category | WHO International BMI Range | Consensus Indian BMI Range | Associated Health Risk |
|---|---|---|---|
| Underweight | < 18.5 | < 18.5 | Nutritional deficiencies, weakened immunity |
| Normal / Healthy | 18.5 – 24.9 | 18.5 – 22.9 | Low risk for metabolic syndromes |
| Overweight | 25.0 – 29.9 | 23.0 – 24.9 | Moderate risk for diabetes and hypertension |
| Obese | ≥ 30.0 | ≥ 25.0 | High to extreme risk for chronic heart conditions |
Health Implications of High BMI
- Increased risk of Coronary Artery Disease (CAD) and heart attacks.
- Type-2 Diabetes mellitus due to insulin resistance.
- Osteoarthritis and chronic joint pain in weight-bearing joints.
- Hypertension (High Blood Pressure) and increased stroke probability.
- Sleep apnea and respiratory issues.
Managing Your Weight at Prakash Hospital
At Prakash Hospital, we take a holistic view of weight management. Our expert clinical team provides comprehensive evaluations:
BMI Frequently Asked Questions
How accurate is BMI as a health metric?
BMI is a great initial screening tool, but it doesn't distinguish between muscle mass and fat mass. Bodybuilders or athletes with high muscle density may receive an "overweight" or "obese" BMI score despite having low body fat levels.
How often should I calculate BMI?
For general fitness, calculating your BMI every 1 to 3 months is sufficient. Sudden weight shifts should be discussed with a medical professional immediately.
Does this BMI range apply to children?
No. BMI ranges for children and adolescents (under 18) are calculated differently using age-and-gender-specific growth percentiles. Consult our Pediatric Department for adolescent development charts.
Prakash Hospital Pvt. Ltd. is a 100 bedded NABH NABL accredited multispecialty hospital along with a center of trauma and orthopedics. We are in the service of society since 2001.
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