Body Mass Index in the scale that matters for your body. The Indian Council of Medical Research uses lower cut-offs than the WHO international scale — because South Asian bodies carry more visceral fat at any given BMI. Toggle between the two.
Enter your height, weight and age. Your result updates once you tab out or click away from each field.
Using Indian (ICMR) thresholds
Both scales use the same BMI formula. They differ on where the lines fall — and for South Asian bodies, that difference is the difference between "you're fine" and "you should see a doctor."
| Underweight | < 18.5 |
| Healthy weight | 18.5 – 22.9 |
| Overweight | 23.0 – 24.9 |
| Obese · class I | 25.0 – 29.9 |
| Obese · class II | 30.0 – 34.9 |
| Obese · class III | ≥ 35.0 |
| Underweight | < 18.5 |
| Healthy weight | 18.5 – 24.9 |
| Overweight | 25.0 – 29.9 |
| Obese · class I | 30.0 – 34.9 |
| Obese · class II | 35.0 – 39.9 |
| Obese · class III | ≥ 40.0 |
If you've ever been told your BMI is "normal" but you still developed diabetes, fatty liver, or high cholesterol — you're not alone, and you're not unlucky. The WHO BMI categories were built using data from European populations. For Indians, those categories systematically underestimate metabolic risk.
This phenomenon has a name. The "thin-fat phenotype" — first described in Indian cohorts by Dr CS Yajnik's group in Pune — refers to a body composition in which Indians, at any given BMI, carry more visceral fat and less lean muscle than Europeans. Visceral fat is the metabolically toxic kind. It drives insulin resistance, inflammation, dyslipidaemia, and cardiovascular disease even when the bathroom scale looks reassuring.
The numbers are striking. The landmark ICMR-INDIAB study (Anjana et al., Lancet Diabetes & Endocrinology, 2023) surveyed 113,043 adults across all states of India. It found 101 million Indians living with diabetes, 136 million with prediabetes, and 254 million classified as obese using Indian-specific criteria. Indians develop type 2 diabetes at BMIs of 23–25 — weights that would be considered "normal" by Western cutoffs.
For this reason, the Indian Council of Medical Research, the Diabetes India Federation, and most Indian endocrinologists use lower thresholds: overweight at BMI ≥23, obese at ≥25. The revised 2025 Indian obesity guidelines (Misra et al., Diabetes & Metabolic Syndrome) formalised these cutoffs further.
If you weigh 70 kg and you're 5'5", you're "normal" by WHO and "overweight" by ICMR. The Indian classification is the more accurate predictor of your metabolic risk. Use it.
BMI is a useful screening tool, but it has real limitations. It doesn't distinguish between fat and muscle, which is why athletes with high muscle mass can score "overweight" without being unhealthy. More importantly for Indians, BMI doesn't measure where fat is stored.
For Indian adults, the single most useful number alongside BMI is your waist circumference. By Indian standards:
If your BMI is "normal" but your waist exceeds these cutoffs, you may still be at metabolic risk. Visceral fat — the kind that sits around your liver, pancreas and intestines — is the type that drives insulin resistance and inflammation. The bathroom scale can't see it; your tape measure can.
Two other measures worth knowing: waist-to-height ratio (keep your waist under half your height) and body fat percentage (more accurate than BMI but needs a DEXA or bioimpedance scan). For most people, waist circumference + BMI is enough to flag whether deeper testing is warranted.
BMI alone doesn't decide treatment — it starts the conversation. If your BMI is elevated by Indian standards, the next step is a full metabolic workup: HbA1c, lipid panel, liver function, thyroid panel, vitamin D and B12, and waist circumference. This is what Kaivo's 35-marker panel covers.
If you have a relevant condition — PCOS, type 2 diabetes, thyroid disease, or significant central obesity — and lifestyle interventions haven't worked, your doctor may recommend GLP-1 medications like semaglutide or tirzepatide (also sold as Mounjaro).
Whatever your BMI says, the answer isn't a label. It's a plan built around your full picture — labs, history, lifestyle, and goals. That's what an AIIMS-trained Kaivo doctor reviews before any prescription is ever written. The 2-minute eligibility quiz takes your BMI, comorbidities and contraindications and tells you honestly whether you're a candidate — and what to do if you're not.
Take the 2-minute eligibility test. Our AIIMS-trained doctors review your full picture — BMI, waist, labs, history — and tell you honestly what your options are.
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