Waist-to-Height Ratio Calculator

Divide waist circumference by height to estimate central adiposity using the same unit for both measurements.

Calculate Waist-to-Height Ratio

This is a screening measure rather than a diagnosis. Waist measurement technique matters, and health risk should be considered alongside other clinical factors rather than from one ratio alone.

Maintained by Live Fitness Check. Last updated: August 13, 2026. How we test our calculators .

About This Calculator

The Waist-to-Height Ratio Calculator compares waist circumference with height as a simple screening measure of central adiposity. It complements rather than replaces other measures such as BMI and is especially easy to interpret because waist and height only need to be entered in the same unit.

Methodology

Waist-to-height ratio is waist circumference divided by height using the same measurement unit. For adults, NICE describes 0.40–0.49 as healthy central adiposity, 0.50–0.59 as increased central adiposity and 0.60 or more as high central adiposity. Measurement technique and clinical context still matter.

Sources

NICE — Identifying and assessing overweight, obesity and central adiposity: https://www.nice.org.uk/guidance/ng246/chapter/Identifying-and-assessing-overweight-obesity-and-central-adiposity
Disclaimer
Waist-to-height ratio is a screening measure, not a diagnosis. Follow correct waist-measurement technique and consider the result alongside other health information. Seek clinical advice when you have concerns about weight-related risk or existing medical conditions.

Frequently Asked Questions

How do I calculate waist-to-height ratio?

Measure waist and height in the same unit, then divide waist circumference by height.

What ratio does NICE advise adults to aim for?

NICE communicates the practical message of keeping waist circumference to less than half of height, while also publishing adult central-adiposity classification bands.

Does waist-to-height ratio replace BMI?

No. It can add information about central adiposity, but health assessment should consider multiple measurements and individual clinical factors.