Waist to Hip Ratio Calculator
WHR = waist / hip using the same length unit on both tapes. WHO adult labels differ by sex. Informational, not medical advice and not a diagnosis.
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How to calculate waist-to-hip ratio
- Measure waist and hip in the same unit (both cm, or both inches).
- Enter those two lengths. The default 80 and 100 is a ratio of 0.80.
- Pick the WHO label set: male or female.
- Note: informational, not medical advice. Nothing is uploaded.
Waist-to-hip ratio
Waist / hip with WHO adult bins
| Formula | waist divided by hip |
|---|---|
| Men low | Ratio under 0.90 |
| Men high | Ratio 1.00 and above |
| Women low | Ratio under 0.80 |
| Women high | Ratio 0.85 and above |
| Advice | Informational. Not a diagnosis or medical advice. |
What WHR is
Waist-to-hip ratio is waist circumference divided by hip circumference. Units cancel, so 80 cm / 100 cm equals 80 in / 100 in. The default 0.80 is WHO low for men (under 0.90) and WHO moderate for women (0.80 to under 0.85).
WHO labels, waist, and hip
WHO adult bins on this page: men under 0.90 low, 0.90 to under 1.00 moderate, 1.00 and up high. Women under 0.80 low, 0.80 to under 0.85 moderate, 0.85 and up high. Tape method for percent fat is Navy body fat. Height-weight index is BMI.
How this page labels the ratio
Sex only selects which WHO table to print. It does not convert units. Waist and hip must be greater than 0. Measure at the landmarks your protocol uses. This page does not define those landmarks beyond the two numbers you type.
Note
Informational, not medical advice. WHR is not a diagnosis. Ethnicity, age, and pregnancy change how a ratio is read. See the disclaimer. CZNull does not receive the tape values.