Waist to Height Ratio Calculator
Calculate waist circumference as a share of height using measurements in the same unit.
Measure waist and height in inches or centimeters. The unit cancels when the ratio is calculated.
Calculator
Enter your numbers, then select Calculate.
How the calculator works
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.
What the result does not include
This is a general screening ratio, not a diagnosis. It does not account for pregnancy, growth in children, medical conditions, or every body type.
Frequently asked 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.
References
Related calculators
Medical disclaimer: This article is general product information, not medical advice. The equipment described here is not a treatment for any condition. If you have an injury, ongoing pain, or a medical condition, talk to a doctor or physical therapist before using any of it.