Get your BMI using Asian-specific healthy weight ranges â€" because standard Western BMI charts don't apply to Indian body types.
BMI (Body Mass Index) is a simple numerical measure calculated from your height and weight. It was developed in the 1830s by Belgian statistician Adolphe Quetelet as a population-level screening tool â€" not an individual diagnostic measure.
For example, a person who is 170 cm (1.70 m) tall and weighs 70 kg has a BMI of 70 ÷ (1.70 × 1.70) = 24.2.
This is the most important thing to understand about BMI if you're Indian: standard Western BMI cutoffs are wrong for you.
Multiple studies, including landmark research from the Indian Council of Medical Research (ICMR) and WHO's expert panel on Asian BMI, have shown that South Asians develop obesity-related health conditions like Type 2 diabetes, hypertension, and cardiovascular disease at lower BMI values than Western populations.
| BMI Range | Western Classification | Asian / Indian Classification |
|---|---|---|
| Below 18.5 | Underweight | Underweight |
| 18.5 â€" 22.9 | Normal weight | Normal weight |
| 23.0 â€" 24.9 | Normal weight | Overweight |
| 25.0 â€" 29.9 | Overweight | Obese (Class I) |
| 30.0 and above | Obese | Obese (Class II+) |
Indian doctors coined the term “thin-fat Indian” to describe a common pattern: South Asians who appear lean or have a “normal” Western BMI but carry a high percentage of body fat â€" particularly visceral fat around the organs.
A study published in The Lancet analysed data from over 800,000 individuals across South, East and Southeast Asia. It found that the optimal BMI cutoff for identifying risk of Type 2 diabetes in South Asians is around 22â€"23, compared to 25 in European populations.
Indians on average have lower skeletal muscle mass compared to Europeans at the same body weight. Since BMI doesn't distinguish between fat and muscle, a lower BMI threshold is needed to capture the same level of metabolic risk in Indians.
A muscular athlete can have a BMI of 27 (classified as overweight) while being extremely healthy. Always pair BMI with waist circumference and lifestyle assessment.
Where you carry fat matters enormously. Abdominal fat (apple shape) is far more dangerous than hip-and-thigh fat (pear shape). Waist-to-height ratio is actually a better predictor of cardiovascular risk than BMI.
Women naturally have more body fat than men at the same BMI.
BMI was developed using European populations. The cutoffs recommended for Indians do not apply directly to other populations.
| Measure | Men (Indian) | Women (Indian) |
|---|---|---|
| Waist Circumference (low risk) | Below 85 cm | Below 80 cm |
| Waist Circumference (elevated risk) | 85â€"90 cm | 80â€"85 cm |
| Waist Circumference (high risk) | Above 90 cm | Above 85 cm |
For Indian women, a BMI between 18.5 and 22.9 is considered healthy by Asian standards. A BMI of 23 or above indicates overweight, and 25 or above indicates obesity. These thresholds are lower than Western standards because South Asian women tend to develop metabolic diseases at lower BMI levels.
Yes, by Asian/Indian standards, a BMI of 23 is classified as overweight. While a BMI of 23 is considered perfectly healthy in Western charts, multiple studies in India and South Asia have found increased metabolic risk (especially for diabetes and heart disease) starting from BMI 23.
Don't panic — BMI is a screening tool, not a diagnosis. If you're physically active, eat well, and have normal blood sugar, cholesterol, and blood pressure, a slightly elevated BMI may not be medically significant. Measure your waist circumference and see a doctor for metabolic blood tests to get a complete picture.
For Indians, BMI 25+ is in the obese range and does carry increased health risk on a population level. However, individual health outcomes depend on many factors — fitness level, metabolic health markers, lifestyle habits, and family history. See a doctor for personalised advice.
No. BMI is not accurate or relevant during pregnancy. Weight gain during pregnancy is normal and necessary. Pre-pregnancy BMI is used to guide appropriate weight gain during pregnancy, but this should be managed by your OB-GYN, not a calculator.