BMI calculator with the Asian cut-offs
Most BMI calculators use lines set on European data, where a healthy BMI runs up to 25. For South Asian adults, the World Health Organization advises that health risk starts rising from 23. This calculator uses the right lines for you, in feet and kilograms, and adds what a bare number leaves out: your waist, and what your weight can mean for your skin.
01 Why the Asian BMI lines matter
- For South Asian adults, a healthy BMI is 18.5 to 22.9, not 18.5 to 24.9.
- From 23, the risk of type 2 diabetes and heart disease starts to rise. From 27.5, it counts as obesity.
- The lower lines come from a World Health Organization expert consultation (2004) and are used by NICE.
- A waist of less than half your height is a simple check that works for everyone.
- BMI is a screening number, not a diagnosis.
The standard BMI lines were set mainly on European populations. In 2004 a World Health Organization expert consultation found that a large share of Asian adults already have a high risk of type 2 diabetes and heart disease below a BMI of 25. At the same BMI, many South Asians carry more body fat, and more of it around the tummy. The consultation proposed lower action points at 23 and 27.5, and NICE now recommends them for South Asian, Chinese, other Asian, Middle Eastern, Black African and African-Caribbean adults.
In practice this means a person in Rawalpindi or Islamabad can be told their BMI of 24 is "normal" by an ordinary calculator, when on the lines that fit them it is already above the healthy range. This calculator applies the right lines when you choose your background.
| Band | Standard BMI | Asian BMI |
|---|---|---|
| Underweight | Below 18.5 | Below 18.5 |
| Healthy | 18.5 to 24.9 | 18.5 to 22.9 |
| Overweight | 25 to 29.9 | 23 to 27.4 |
| Obesity | 30 or more | 27.5 or more |
02 How to measure yourself properly
- Height: stand straight against a wall without shoes, heels together. Feet and inches is fine.
- Weight: use the same scales, in the morning, before breakfast and in light clothes.
- Waist: measure level with your belly button, breathing out normally. This is usually higher than your trouser waistband, so your trouser size is not a reliable guide.
03 What your weight can mean for your skin
As a skin doctor, Dr Taskeen Iqbal sees how weight shows up on the skin. DermNet lists several changes linked with excess weight, including skin tags, stretch marks, rashes in skin folds and, in women, extra facial hair. The one most worth knowing is acanthosis nigricans: dark, velvety skin on the back of the neck, in the underarms or groin. It is often mistaken for pigmentation and treated with whitening creams, but it is frequently a sign of insulin resistance and pre-diabetes. The right first step is a blood sugar test, not a cream.
Some of these changes can be treated in the clinic, such as skin tag removal and laser hair removal. Others need your family doctor first.
04 Where fat dissolving injections fit
Patients often ask about fat dissolving injections for weight. They are not a weight-loss treatment. They treat a small, stubborn pocket of fat, such as a double chin or a lower-tummy bulge, in people who are already close to a stable, healthy weight. That is why the calculator's report tells you honestly whether they are likely to fit your reading. If they are not the right step, you will be told so at consultation.
05 Where these figures come from
- WHO expert consultation: Appropriate body-mass index for Asian populations (The Lancet, 2004) ↗
- NICE NG246: Overweight and obesity management ↗
- International Diabetes Federation: metabolic syndrome definition and ethnic waist cut-offs (2006) ↗
- DermNet: Obesity and the skin ↗
- American Academy of Dermatology: Acanthosis nigricans ↗
This calculator informs; it does not diagnose. Individual health depends on much more than one number. If anything about your health worries you, please see your family doctor.
BMI for Pakistanis, frequently asked
For South Asian adults, including Pakistanis, a healthy BMI is 18.5 to 22.9. From 23 health risk starts to rise, and 27.5 or more counts as obesity. These lower lines come from a World Health Organization expert consultation and are used by NICE in the UK. The standard lines of 25 and 30 were set mainly on European data.
Because South Asian adults tend to develop type 2 diabetes and heart disease at a lower BMI than European adults. At the same BMI, many South Asians carry more fat, and more of it around the tummy. The lower lines catch that risk earlier.
Divide your weight in kilograms by your height in metres, squared. For example, 70 kg at 168 cm (1.68 m, about 5 feet 6 inches) is 70 divided by 1.68 × 1.68 (2.82), which gives a BMI of 24.8. On the standard lines that is healthy; on the Asian lines it is overweight.
It adds something BMI cannot see: where fat sits. A simple rule from NICE is to keep your waist to less than half your height. For South Asian adults, the International Diabetes Federation treats a waist of 90 cm (about 35.4 inches) or more in men, and 80 cm (about 31.5 inches) or more in women, as raised risk.
No. Fat dissolving injections treat a small, stubborn pocket of fat, such as a double chin, in people who are already close to a stable, healthy weight. They are not a weight-loss treatment, and Dr Taskeen Iqbal will tell you honestly if they are not the right step for you.
Dark, thick, velvety skin on the back of the neck, in the underarms or groin is often acanthosis nigricans. It is linked with excess weight and insulin resistance, and can be an early sign of pre-diabetes. Whitening creams will not fix it. See a doctor and ask for a blood sugar test.
Yes. The calculator runs entirely in your browser. There is no account, nothing is saved, and nothing you type is sent to the clinic or anyone else. Close the tab and it is gone.
Seeing changes in your skin?
Book a consultation with Dr Taskeen Iqbal at the clinic in Bahria Town, Rawalpindi. She will look at your skin in person and tell you honestly what will help.