Waist-to-Height Calculator
Calculate your waist-to-height ratio and understand adult screening categories alongside BMI and consistent measurement technique.
Published by Reeve Editorial Team · Methods and sources updated
Waist-to-height ratio
0.50
Increased central adiposity
Half your height is 85.0 cm. For adults with BMI below 35, the NICE classification changes at ratios of 0.5 and 0.6. This is screening context, not a diagnosis.
Inputs stay in this tab. Saving keeps a copy on this device until you reset or clear it.
These adult screening estimates do not apply during pregnancy. Body composition, ancestry, age, medical history, and measurement technique can change how a result should be interpreted.
How this tool works
Divide waist circumference by height using the same unit. Measure the waist midway between the lowest ribs and top of the hips after a normal exhalation. This differs from the waist landmark used by the RFM body-fat tool.
For adults with BMI below 35, NICE defines ratios of 0.4 to below 0.5 as no increased central adiposity, 0.5 to below 0.6 as increased, and 0.6 or more as high. Ratios below 0.4 are outside these published categories. The calculator shows the ratio without applying categories at BMI 35 or above.
Sources
Frequently asked questions
Why enter weight as well?
Weight allows the tool to check whether the BMI range for the displayed NICE classifications applies.
Is half my height a personal medical target?
It is a general screening reference. It does not replace assessment of your overall health and circumstances.