Waist-to-Hip Ratio Calculator
A woman with a 72 cm waist and 96 cm hips has a waist-to-hip ratio of 0.75, which falls in the low-risk band used by this tool. This waist-to-hip ratio calculator divides your waist measurement by your hip measurement and compares the result with standard adult cutoffs for men and women. Use the same unit for both measurements. Inches and centimeters both work because the units cancel out.
Quick answer
Waist-to-hip ratio is waist divided by hip circumference.
Use the same unit for both measurements. Inches and centimeters both work.
What this tells you
- •Waist-to-hip ratio is waist divided by hip circumference.
- •Both measurements must use the same unit.
- •This tool uses standard adult cutoffs for men and women.
- •The result is a screening marker, not a diagnosis.
How to Use
- 1Select the sex used for interpretation.
- 2Enter your waist measurement.
- 3Enter your hip measurement in the same unit.
- 4Calculate to see your waist-to-hip ratio and risk category.
How It Works
Formula
WHR = waist / hip
Men: under 0.90 low, 0.90 to 0.99 moderate, 1.00 and above high
Women: under 0.80 low, 0.80 to 0.84 moderate, 0.85 and above highMeasure waist and hips in the same unit, divide waist by hip, then compare the result with the sex-specific cutoffs. The units cancel out, so inches and centimeters produce the same ratio.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Adult woman example
72 divided by 96 equals 0.75, which stays below the 0.80 female cutoff.
Adult man example
94 divided by 100 equals 0.94, which lands in the 0.90 to 0.99 male band.
Waist-to-Hip Ratio Risk Bands
Standard adult cutoffs used by this calculator.
| Sex | Low risk | Moderate risk | High risk |
|---|---|---|---|
| Men | Under 0.90 | 0.90 to 0.99 | 1.00 and above |
| Women | Under 0.80 | 0.80 to 0.84 | 0.85 and above |
Common mistakes
- Using inches for one measurement and centimeters for the other.
- Measuring hips too high instead of around the widest part.
- Treating the ratio as a diagnosis instead of a screening cue.
Limitations
This calculator uses standard adult waist-to-hip ratio cutoffs only. It does not account for age, ethnicity, pregnancy, body composition, or clinical history, and it is not intended for children.