Calculator
What the Waist-to-Hip Ratio Calculator does
Waist-to-Hip Ratio Calculator: converts Waist / Hip Ratio and Risk Band from Waist Circumference, Hip Circumference and Sex. Example: waist circumference 80 cm, hip circumference 95 cm and sex Male gives waist / hip ratio 0.84.
The inputs are Waist Circumference, Hip Circumference and Sex; the output is Waist / Hip Ratio and Risk Band. There is no submit step; the numbers move as you adjust them.
It is mostly used by anyone curious about a reading. Population formulas give you a starting point, not a verdict about your body.
Everything happens inside this page. Nothing you type is sent to a server, and there is nothing for us to store.
The field reference, the method and a worked example using the default inputs follow the tool itself.
What do the Waist-to-Hip Ratio Calculator fields mean?
The Waist-to-Hip Ratio Calculator uses 3 inputs. The starting figures are ordinary, not edge cases, so they make a sensible baseline.
| Field | What to enter | Default |
|---|---|---|
| Waist Circumference | measured in cm | 80 |
| Hip Circumference | measured in cm | 95 |
| Sex | choose from Male or Female | Male |
How does the Waist-to-Hip Ratio Calculator work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same conversion.
An empty or malformed field stops the calculation rather than being treated as zero.
Worked example
These are the values the Waist-to-Hip Ratio Calculator loads by default, and the result it produces from them. The defaults produce the result shown here; change any of them and the answer moves.
| Waist Circumference | 80 cm |
|---|---|
| Hip Circumference | 95 cm |
| Sex | Male |
| Waist / Hip Ratio | 0.84 |
|---|---|
| Risk Band | Lower abdominal risk |
| What this means | Waist-to-hip is below common risk cutoffs. Keep monitoring if weight or waist changes. |
Read next: Understanding BMI: What the Number Measures, and What It Misses
How to use it
- Key in Waist Circumference in cm.
- Fill in Hip Circumference in cm.
- Pick a value for Sex: the options are Male or Female.
- There is nothing to click. The answer keeps pace with your edits.
- Read Waist / Hip Ratio, Risk Band and What this means in the results panel.
- If you need a record, Copy Link saves the inputs and Print produces a clean page.
What this tool does not do
- Body composition, ethnicity and age all shift what a "normal" result means for an individual.
- Population-level formulas cannot account for medical conditions, medication or pregnancy.
- Values outside the documented ranges are rejected rather than approximated.
- A plausible-looking answer from the wrong input is still the wrong answer: verify the fields first.
Frequently asked questions
Enter Waist Circumference in cm and Hip Circumference in cm. Each field states its unit next to the input, and outputs are labelled the same way.
With the values loaded when the page opens, waist / hip ratio comes out as 0.84. Edit any input and that figure moves with it.
No. Nothing you enter about your body is sent anywhere or stored.
No cost and no account. Use it as often as you like.
It is a screening estimate, not a diagnosis. The formulas are standard, but they describe averages and you are not an average. Use it as a starting point for a conversation with a professional.