Waist-to-Height Ratio Calculator
Compares your waist with your height.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
ratio = waist ÷ height
Use the same unit for both.
What to watch out for
The bands are from NICE guideline NG246: 0.4 to 0.49 healthy, 0.5 to 0.59 increased, and 0.6 or more high central adiposity. NICE says they can be used for adults with a BMI under 35, of both sexes and all ethnicities, including people with high muscle mass.
The usual advice, also from NICE, is to keep your waist to less than half your height.
Frequently Asked Questions
What is the ratio for an 85 cm waist at 175 cm?
0.49, which is healthy central adiposity on the NICE bands.
What waist is in the healthy band at my height?
From 0.4 of your height up to just under half of it. At 175 cm, that is 70.0 cm to just under 87.5 cm. Smaller is not healthier below that band.
Is it better than BMI?
It picks up fat around the middle, which BMI misses, and it does not need separate cut-offs by sex. The two are often used together.