Shoulder-to-Hip Ratio — Circumference, Not Width
A useful balance ratio with a naming problem: most “shoulder-to-hip” charts use widths, while this one uses circumferences. The distinction matters.
What the number means
This ratio is shoulder circumference divided by hip circumference. A 110 cm shoulder and a 95 cm hip give 1.16. A value near 1.00 means the two circumferences are similar; a higher value means the shoulder circumference is larger, and a lower value means the hip circumference is larger.
Circumference vs width
A shoulder-width to hip-width ratio uses straight-line distances across the body. A circumference ratio wraps around the body, so it includes depth as well as width. Two people with the same shoulder width can have different shoulder circumferences because their chest depth differs.
That is why the reference band here is labelled “descriptive”. It is not a target and not a substitute for a width-based fashion chart. If a pattern asks for shoulder width, measure shoulder width, not circumference.
How to measure shoulder circumference
- Stand relaxed with arms down, shoulders not shrugged.
- Wrap the tape around the widest point of the shoulders and upper back.
- Keep the tape level all the way around; check the back in a mirror.
- Do not pull it tight enough to compress the shoulders.
For the hip, use the fullest part of the hips and seat, feet together. The two measurements should use the same unit and the same tape.
Use in clothing fit
The ratio is a quick way to think about where to add volume. A higher shoulder-to-hip ratio means the upper body carries more circumference; a lower one means the lower body does. That can guide whether a jacket, shirt, skirt or trouser needs more room, but it does not replace the garment’s own measurements or a fitting.
Use in figure drawing
The classical canon usually gives shoulder width as about two heads, while this ratio uses circumferences. Do not use the circumference ratio as a drawing measurement. The drawing guide uses width and head units instead.
Limits
- Circumference is not width; do not compare this number with a width-based chart.
- Posture and arm position change the shoulder reading.
- There is no universal target; the band is descriptive.
Questions
Is this the same as shoulder width divided by hip width?
No. This ratio uses shoulder circumference divided by hip circumference. A width ratio uses straight-line distances across the body. The two are related but not interchangeable, and they can rank bodies differently.
What is a good shoulder-to-hip ratio?
There is no universal target. A value near 1.00 means the two circumferences are similar; values above or below describe a different balance. The calculator labels the ratio “descriptive” for that reason.
How do I measure shoulder circumference?
Wrap the tape around the widest point of the shoulders and upper back, with arms down and the tape level. Do not measure across the front only; the tape should form a closed loop around the body.
Sources
- Revisiting Vitruvian Man (2020). Revisiting Leonardo da Vinci’s Vitruvian Man Using Contemporary Measurements. PMC7284298 (2020). https://pmc.ncbi.nlm.nih.gov/articles/PMC7284298/ 63,623 men and 1,385 women from US Air Force body-scan data. Head height 0.14/0.15 of stature; arm span 0.96/0.92; shoulder width 0.24/0.25.