Free · Body measurements calculators 📏

Waist to Hip Circumference Ratio

Compare two positive circumference measurements with matching length units.

  • Formula & worked example
  • Private in your browser
  • No signup
Go to tool

Calculator inputs

Loading calculator…

How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.

Formula and method

Waist 80 cm and hip 100 cm give a circumference ratio of 0.8.

Ratio = waist circumference / hip circumference.

Worked example

Enter these known values and leave the other values blank.

Waist circumference (W)
80 cm
Hip circumference (H)
100 cm
Waist-hip ratio
0.8

Assumptions and limitations

  • The result is a dimensionless measurement ratio. Measure waist and hip using a consistent protocol; this tool does not assign risk categories.
  • Use the displayed units and measurements from the same context. Editable fields support arithmetic inverses when enough independent values are supplied. Clear a preset value before solving it as an unknown.
  • This tool performs the stated arithmetic model. It does not establish a diagnosis, prescribe treatment or replace laboratory and clinical assessment.

Common questions

What does this calculation represent?

The result is a dimensionless measurement ratio. Measure waist and hip using a consistent protocol; this tool does not assign risk categories.

Can I solve for a different field?

Clear the unknown field and enter enough independent values in the remaining editable controls. A relationship cannot recover a unique value when a dividing quantity is zero.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

Explore body measurements calculators 📏 or browse all health calculators.