How to Calculate BMI (Asian Cut-offs): A Step-by-Step Guide
Singapore's Health Promotion Board uses lower BMI cut-offs for Asians because health risks rise at lower BMIs. This calculator applies them.
Health numbers are most useful when you track them consistently. A quick calculation turns everyday measurements into something you can act on, whether that is planning meals, training for a run or preparing for a clinic visit.
What you need
- Weight (kg)
- Height (cm)
Step by step
- Enter the weight (kg).
- Enter the height (cm).
- The results update as you type, or press Calculate.
- Read the bmi first, then the supporting figures below it.
The formula
BMI = weight (kg) ÷ height (m)²; 18.5–22.9 is the healthy range for Asians.
Worked example
For example, with these inputs:
- Weight (kg): 68
- Height (cm): 170
the calculator returns:
- BMI: 23.53
- Health risk (HPB Asian cut-offs): Moderate risk
A second example
Now change the inputs to:
- Weight (kg): 85
- Height (cm): 170
the calculator returns:
- BMI: 29.41
- Health risk (HPB Asian cut-offs): High risk
Practical tips
- Small, steady changes are easier to sustain than dramatic targets.
- Track trends over weeks rather than reacting to a single reading.
- Asian BMI cut-offs are lower than WHO's, so a 'normal' international BMI can still mean moderate risk.
- Formulas give estimates for the average person; your doctor can account for your history and body composition.
Background
Singapore's tropical climate means you lose more fluid through sweat, even when you are not exercising. Thirst, urine colour and how you feel are good guides, and needs rise during outdoor activity or heat waves.
Programmes such as the National Steps Challenge and the Healthy 365 app have made tracking activity common. Turning those numbers into distance, pace or calories helps set realistic goals for events like IPPT or a 10 km run.
Any health calculator gives a general estimate. If a result worries you, or you are pregnant, managing a chronic condition or planning a big change in diet or exercise, speak to a doctor, polyclinic or dietitian.
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- Ovulation Calculator: Estimates ovulation and the fertile window.
- Heart Rate Zone Calculator: Shows heart-rate training zones from your age.
Want to skip the arithmetic? The free BMI Calculator (Asian Cut-offs) does all of this instantly and updates as you type.
Run your own numbers: BMI Calculator (Asian Cut-offs)