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Hip-to-Height Ratio Calculator

A hip-to-height ratio, a body-proportion measure that does not depend on the unit used.

Result

0.576

How it is calculated

The tool divides hip circumference by height: HHtR = hip ÷ height. Both numbers must use the same unit, such as centimetres for both or inches for both, because the unit cancels and the ratio has no unit. The result is rounded to three decimals. Height must be greater than zero and the hip value cannot be negative, otherwise there is no result. The tool only returns the ratio: it does not label it as healthy or unhealthy and applies no age or sex adjustment, and there is no widely agreed cut-off to read from it. It is most useful for comparing your own measurements over time.

Worked example

A person is 170 cm tall and the tape around the widest part of the hips reads 98 cm. Both are in centimetres, so divide: 98 ÷ 170 = 0.57647, shown as 0.576. If, a few months later, the hip measurement is 95 cm at the same height, the ratio becomes 95 ÷ 170 = 0.559, so you can see the change as a single number.

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Common mistakes

  • Mixing units, such as hips in inches and height in centimetres; the ratio would be wrong by a factor of about 2.5.
  • Confusing it with the waist-to-hip ratio or the waist-to-height ratio; this one uses hip circumference and height only.
  • Measuring hips inconsistently: the tape must be level and around the widest part, and measuring over thick clothing or at a different height changes the ratio.
  • Using a rounded height (rounded up or down by several centimetres), which shifts the ratio noticeably.
  • Treating the number as a diagnosis; the tool just divides two measurements and does not give a health category.

About this calculator

The hip-to-height ratio divides hip circumference by height, both measured in the same units — HHtR = hip circumference / height — producing a single decimal figure comparable across people of different builds. Hip circumference is measured at the widest point around the buttocks, standing relaxed with a flexible tape held horizontal.

The measure is used alongside waist-to-height and waist-to-hip ratios in fitness and health screening as a simple proxy for lower-body frame size and fat distribution, useful for tracking gluteal and hip development over time or comparing body proportions without needing scales or BMI calculations.

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