Waist, Chest & Hip Ratios
Look at waist over chest alongside waist over hip. Both small means a defined waist; a waist wider than the chest means fat has gathered around the middle.
Your numbers
Waist-to-chest
0.84
Waist-hip ratio
0.857
Difference
16cm
What it means
Your waist is clearly narrower than both chest and hip — fitted cuts suit this shape.
Formula
Waist-to-chest = Waist (cm) ÷ Chest (cm)
Shape is not good or bad — it helps with clothes and shows fat distribution. For health, use waist-to-height.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Waist (cm) (cm)Waist at navel height, measured after breathing out. | 84 | 30 and up |
| Chest (cm) (cm)Chest at its widest, measured just under the armpits. | 100 | 40 and up |
| Hip (cm) (cm)Hip circumference at its widest point. | 98 | 40 and up |
Step by step
Quick reference table
Results when only Waist (cm) (cm) changes and everything else stays put.
| Waist (cm) (cm) | Waist-to-chest | Waist-hip ratio | Difference (cm) |
|---|---|---|---|
| 42 | 0.42 | 0.429 | 58 |
| 63 | 0.63 | 0.643 | 37 |
| 84 | 0.84 | 0.857 | 16 |
| 126 | 1.26 | 1.286 | -26 |
| 168 | 1.68 | 1.714 | -68 |
What each result means
| Result | At default values |
|---|---|
| Waist-to-chestWidth over height — the same idea as an aspect ratio. | 0.84 |
| Waist-hip ratioWaist over hip — it shows where the fat sits, not how much. | 0.857 |
| Difference (cm)The gap between two values — a quantity, not a rate. | 16 |
Common mistakes
Shape is not good or bad — it helps with clothes and shows fat distribution. For health, use waist-to-height.
Glossary
- Waist (cm)
- Waist at navel height, measured after breathing out.
- Chest (cm)
- Chest at its widest, measured just under the armpits.
- Hip (cm)
- Hip circumference at its widest point.
- Waist-to-chest
- Width over height — the same idea as an aspect ratio.
- Waist-hip ratio
- Waist over hip — it shows where the fat sits, not how much.
- Difference
- The gap between two values — a quantity, not a rate.
Frequently asked questions
Q. How is Waist, Chest & Hip Ratios calculated?
Waist-to-chest = Waist (cm) ÷ Chest (cm) — Look at waist over chest alongside waist over hip. Both small means a defined waist; a waist wider than the chest means fat has gathered around the middle.
Q. Can you walk through an example?
With Waist (cm) 84cm, Chest (cm) 100cm, Hip (cm) 98cm, the answer is Waist-to-chest 0.84.
Q. What do I need to enter?
Enter Waist (cm), Chest (cm), Hip (cm). The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Waist (cm) (cm) moves the answer to Waist (cm) (cm) 42 → Waist-to-chest 0.42 and Waist (cm) (cm) 168 → Waist-to-chest 1.68. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Shape is not good or bad — it helps with clothes and shows fat distribution. For health, use waist-to-height.
Related calculators
These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.