Waist-to-Height Ratio Calculator
Waist-to-height ratio calculator: WHtR and the waist size to stay under the “keep your waist to less than half your height” rule.
WHtR = WH
How to use this calculator
- Choose the quantity you want under “Solve for”.
- Type the known values and pick their units: any combination works.
- The result updates as you type. Open “Show the steps” to see the substitution.
A ratio above 0.5 is linked to higher cardiometabolic risk in adults, regardless of sex or ethnicity.
For general information only; it does not replace advice from a doctor or other health professional.
Formula
WHtR = WH
| Symbol | Quantity | Units |
|---|---|---|
| W | Waist circumference | m, km, cm, mm, µm, nm, pm, Å, in, ft, yd, mi, nmi, au, ly |
| H | Height | m, km, cm, mm, µm, nm, pm, Å, in, ft, yd, mi, nmi, au, ly |
| WHtR | Waist-to-height ratio | — |
Worked example
Given: W = 32.2835 in · H = 68.8976 in
WHtR = WH
Result: WHtR = 0.468571
Waist-to-height ratio for different values of Waist circumference
| W · Waist circumference | WHtR · Waist-to-height ratio |
|---|---|
| 25.83 in | 0.37486 |
| 29.06 in | 0.42171 |
| 32.28 in | 0.46857 |
| 35.51 in | 0.51543 |
| 38.74 in | 0.56229 |
| 41.97 in | 0.60914 |
Other values as in the worked example.
Frequently asked questions
Waist 32 in, height 5 ft 9 in?
WHtR ≈ 0.46.
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