Calculating your waist-to-hip ratio is straightforward once you know the Waist to Hip Ratio formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Waist to Hip Ratio Calculator.
What is Waist to Hip Ratio?
The Waist to Hip Ratio calculation tells you your waist-to-hip ratio from a few simple inputs. The figure you are solving for here is the waist-to-hip ratio.
The Waist to Hip Ratio formula
The core formula is:
Waist-to-hip ratio = Waist circumference ÷ Hip circumferenceHere is what each input means:
- Waist circumference — a value measured in cm. Example: 80 cm.
- Hip circumference — a value measured in cm. Example: 100 cm.
How to calculate it step by step
- Write down the waist circumference (for example, 80 cm).
- Write down the hip circumference (for example, 100 cm).
- Apply the formula above to get your waist-to-hip ratio.
- Double-check the result with the Waist to Hip Ratio Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Waist circumference | 80 cm |
| Hip circumference | 100 cm |
| Waist-to-hip ratio | 0.80 |
With waist circumference of 80 cm and hip circumference of 100 cm, the waist-to-hip ratio works out to 0.80.
Example 2
With waist circumference of 160 cm and hip circumference of 100 cm, the waist-to-hip ratio works out to 1.60.
| Result | Value |
|---|---|
| Waist-to-hip ratio | 1.60 |
Example 3
With waist circumference of 40 cm and hip circumference of 100 cm, the waist-to-hip ratio works out to 0.40.
| Result | Value |
|---|---|
| Waist-to-hip ratio | 0.40 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
- These figures are general estimates, not medical advice — check with a qualified professional before acting on them.
Prefer not to do the maths by hand? — the Waist to Hip Ratio Calculator does it instantly, for free, with the formula and a worked example built in.
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