# BMI Calculator Singapore: Asian BMI Cut-offs

Your BMI against Singapore's Asian cut-offs (healthy 18.5 to 22.9, high risk from 27.5), with the healthy weight range for your height.

Interactive tool: https://lookup.sg/tools/bmi-calculator

## How this works
Body Mass Index is weight in kilograms divided by height in metres squared. At 170 cm and 65 kg, BMI is 65 ÷ (1.7 × 1.7) = 22.5.

Singapore's Health Promotion Board and Ministry of Health use lower cut-offs for Asian adults than the WHO international scale: below 18.5 is underweight, 18.5 to 22.9 is healthy (low risk), 23.0 to 27.4 is moderate risk and 27.5 and above is high risk of weight-related problems such as type 2 diabetes, high blood pressure, heart disease and stroke.

The healthy weight range shown is the weight that gives a BMI of 18.5 to 22.9 at your height. BMI is a screening number: it does not tell muscle from fat, and children and teens under 18 are assessed on BMI-for-age percentile charts instead of these adult cut-offs.

## FAQs
### What is a healthy BMI in Singapore?
18.5 to 22.9 for adults. A BMI of 23.0 to 27.4 puts you at moderate risk of weight-related health problems, and 27.5 or above at high risk, under the HPB cut-offs for Asians.

### Why is Singapore's BMI cut-off lower than 25?
Asians tend to have a higher proportion of body fat, and higher risk of diabetes and heart disease, at the same BMI as Europeans. So Singapore flags risk from a BMI of 23 rather than the WHO international 25.

### What is a healthy weight for 170 cm?
About 53.5 kg to 66.2 kg, which is a BMI of 18.5 to 22.9 at 1.70 m. At 160 cm the range is about 47.4 kg to 58.6 kg.

### Can I use this BMI calculator for my child?
It shows a child's BMI number, but under-18s are assessed against BMI-for-age percentile charts for their sex and age, as in the HPB growth charts in the Health Booklet, not the adult cut-offs.

## Sources
- [HealthHub (HPB): Is my weight putting me at risk of health problems?](https://www.healthhub.sg/live-healthy/weight_putting_me_at_risk_of_health_problems)
- [MOH: National Health Survey 2004, BMI risk categories for Asians](https://moh.gov.sg/docs/librariesprovider5/resources-statistics/reports/nhs_2004(part4).pdf)

---
Source: Lookup (https://lookup.sg) · Data as of October 2026 · Listings compiled from Singapore government open data (data.gov.sg), OneMap and Overture Maps places. Free listings never show contact details; contact details appear only on Lookup Verified listings.