A 90 cm waist at 175 cm tall gives a ratio of 0.51, above the 0.5 line. At that height, keep your waist under 88 cm, half your height.
General information, not medical advice. Read the disclaimer
| Height (cm) | waist 60 cm | waist 70 cm | waist 80 cm | waist 90 cm | waist 100 cm | waist 110 cm | waist 120 cm |
|---|---|---|---|---|---|---|---|
| 150 | 0.40 | 0.47 | 0.53 | 0.60 | 0.67 | 0.73 | 0.80 |
| 155 | 0.39 | 0.45 | 0.52 | 0.58 | 0.65 | 0.71 | 0.77 |
| 160 | 0.38 | 0.44 | 0.50 | 0.56 | 0.63 | 0.69 | 0.75 |
| 165 | 0.36 | 0.42 | 0.48 | 0.55 | 0.61 | 0.67 | 0.73 |
| 170 | 0.35 | 0.41 | 0.47 | 0.53 | 0.59 | 0.65 | 0.71 |
| 175 | 0.34 | 0.40 | 0.46 | 0.51 | 0.57 | 0.63 | 0.69 |
| 180 | 0.33 | 0.39 | 0.44 | 0.50 | 0.56 | 0.61 | 0.67 |
| 185 | 0.32 | 0.38 | 0.43 | 0.49 | 0.54 | 0.59 | 0.65 |
| 190 | 0.32 | 0.37 | 0.42 | 0.47 | 0.53 | 0.58 | 0.63 |
| 195 | 0.31 | 0.36 | 0.41 | 0.46 | 0.51 | 0.56 | 0.62 |
| 200 | 0.30 | 0.35 | 0.40 | 0.45 | 0.50 | 0.55 | 0.60 |
How it is computed
Waist-to-height ratio = waist ÷ height, in the same unit. NICE bands: 0.4 to 0.49 healthy, 0.5 to 0.59 increased health risk, 0.6 and over high risk. Measure the waist halfway between the lowest rib and the top of the hip bone.
FAQ
Why use waist-to-height instead of BMI?+
It tracks belly fat, which is more closely tied to heart disease and diabetes than total weight, and it works for adults of any height.
What does 'keep your waist to less than half your height' mean?+
It is the 0.5 cut-off in plain words: a 170 cm adult should keep the waist under 85 cm.