Waist-to-Height Ratio: Your Questions Answered

Updated 5 Oct 2026 in Health & Fitness

These are the questions people ask most often about waist-to-height ratio. Each answer is short; follow the links for the full detail.

What does a waist-to-height ratio calculation tell me?

A ratio above 0.5 suggests increased health risk.

What is the formula?

Ratio = waist ÷ height.

What do I need to enter?

Waist (cm), Height (cm).

Is this a medical assessment?

No. These are general estimates. Speak to a doctor or polyclinic for advice about your health.

Can you show an example?

For example, with these inputs:

the calculator returns:

Any tips?

Background

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.

Research has shown that Asians tend to develop conditions such as type 2 diabetes and heart disease at lower body weights than Europeans. That is why the Health Promotion Board recommends lower BMI cut-offs for Singaporeans, with 23 marking the start of moderate risk.

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.

Related calculations

Try it yourself with the Waist-to-Height Ratio Calculator.

Run your own numbers: Waist-to-Height Ratio Calculator

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