Waist to Height Ratio Calculator
Calculate waist circumference as a share of height using measurements in the same unit.
Enter your details
Enter your numbers, then select Calculate. Nothing is stored, sent, or transmitted.
- Waist to height ratio equals waist circumference divided by height. NICE describes 0.5 as a practical screening boundary and 0.6 as a higher risk boundary for adults in the populations covered by its guidance.
- This is a general screening ratio, not a diagnosis. It does not account for pregnancy, growth in children, medical conditions, or every body type.
- The calculation runs in your browser. Nothing you enter is stored, sent, or transmitted.
What does this waist to height ratio calculator tell you?
Calculate waist circumference as a share of height using measurements in the same unit.
Waist to height ratio equals waist circumference divided by height. NICE describes 0.5 as a practical screening boundary and 0.6 as a higher risk boundary for adults in the populations covered by its guidance.
How to use the result
Use the result as a consistent planning number. Record the inputs with the answer so a later comparison uses the same method.
Recalculate when the underlying inputs change. Avoid comparing results created with different units, measurement methods, or machine settings.
Where the number stops being useful
This is a general screening ratio, not a diagnosis. It does not account for pregnancy, growth in children, medical conditions, or every body type.
What is the catch?
Check every entry and keep units consistent. When an input is uncertain, calculate a reasonable high and low case so you can see how much the answer depends on that number.
Nothing entered here is stored, sent, or transmitted. The calculation runs in your browser.
Common questions
Do waist and height need the same unit?
Yes. Use inches for both or centimeters for both.
Does a ratio diagnose a health condition?
No. It is one screening measure and should be interpreted with other health information.
This calculator gives an estimate for general information. It is not medical advice and does not account for your full health history. Read the health disclaimer.