BMI Calculator for Indians
Calculate your Body Mass Index using WHO Asian cutoffs. These thresholds are more accurate for South Asian populations than standard Western ranges.
Understanding BMI for Indians
Body Mass Index (BMI) is a simple screening metric that relates weight to height. While the global standard uses 25 as the overweight cutoff, the World Health Organization (WHO) recommends lower thresholds for Asian populations because South Asians are at higher cardiometabolic risk at lower BMI levels.
How BMI is Calculated
Metric formula
BMI = weight (kg) ÷ height (m)2
Example: 72 kg ÷ (1.75 m)2 = 23.5
Imperial formula
BMI = (weight (lb) ÷ height (in)2) × 703
Example: (158.7 lb ÷ 68.9 in2) × 703 = 23.5
The standard BMI formula was developed by Adolphe Quetelet in the 1830s and is used globally by the WHO and the CDC. The Asian-specific cutoffs (overweight ≥ 23, obese ≥ 25) are based on WHO expert consultation for the Asia-Pacific region.
BMI Classification (Asian Cutoffs)
| BMI Range | Category | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Low (but other risks) |
| 18.5 – 22.9 | Normal | Average |
| 23.0 – 24.9 | Overweight | Increased |
| 25.0 – 29.9 | Obese (Class I) | High |
| 30.0 and above | Obese (Class II+) | Very High |
Why Asian-Specific Cutoffs Matter
- South Asians have higher body fat percentage at the same BMI compared to Caucasians.
- Indians develop type 2 diabetes and cardiovascular disease at BMI levels classified as "normal" by Western standards.
- The Indian Council of Medical Research (ICMR) recommends using 23 as the overweight threshold.
- Waist-to-hip ratio is an important complementary metric for Indians, as central obesity is common even at normal BMI.
Frequently Asked Questions
Sources
- WHO Expert Consultation. Appropriate body-mass index for Asian populations and its implications for policy and intervention strategies. The Lancet, 2004; 363(9403): 157–163.
- Centers for Disease Control and Prevention (CDC). About Adult BMI — BMI Categories.
- World Health Organization (WHO). A healthy lifestyle — WHO recommendations.
- Misra A, et al. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians. JAPI, 2009; 57: 163–170.
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