Waist-to-hip ratio calculator
Where fat sits matters as well as how much there is. Waist-to-hip ratio is a proxy for abdominal fat.
Waist-to-hip ratio
0.850
- WHO threshold for your sex
- 0.90
- Distance above the threshold Negative is below it.
- -0.050
Show the working
- Waist circumference = 85
- Hip circumference = 100
- Sex = 1
- Waist-to-hip ratio = 85 / 100 = 0.85
- WHO threshold for your sex = 1 > 0 ? 0.90 : 0.85 = 0.9
- Distance above the threshold = 0.85 - 0.9 = -0.05
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- WHR = waist circumference / hip circumference
The WHO defines abdominal obesity as a ratio above 0.90 in men and 0.85 in women.
This is a population formula, not a diagnosis. Individual metabolism, body composition and medical history all move the real answer, so treat the number as a starting point and talk to a clinician about anything that matters.