Jaw : cheekbone width

What jaw-to-cheekbone ratio measures

This ratio compares the width of your jaw to the width of your cheekbones, both measured across the face from the front. The jaw width is the bigonial distance - the span between the two jaw angles, the gonion points that sit just below and in front of the ears - and the cheekbone width is the bizygomatic distance across the widest part of the cheeks. The jaw figure is divided by the cheekbone figure, so the result normally falls a little under 1.0.

Because the jaw angles are estimated from a front-on face mesh rather than touched directly, this is one of the more approximate frontal measurements. Read it as indicative of your taper, not as a precise caliper reading.

Why the taper defines face shape

The relationship between jaw width and cheekbone width is what gives a face its overall outline. A jaw a little narrower than the cheekbones produces the tapering oval or diamond shape that conventional aesthetics tend to favour, while a jaw as wide as or wider than the cheekbones reads as square or round. It is one of the clearest single drivers of whether a face looks angular or soft, which is why it features so heavily in face-shape discussions.

The conventional range, and how it differs by sex

The overall band used here is roughly 0.76 to 0.86. It is also one of the genuinely sex-linked proportions: the bands lean a little wider for men, about 0.78 to 0.88, and a little narrower for women, about 0.74 to 0.84, reflecting the convention that a relatively stronger jaw belongs to a masculine outline and a more tapered jaw to a feminine one.

That dimorphism is documented. An AI analysis of celebrity faces reported a cheekbone-to-jaw width ratio of about 1.13 in men versus about 1.17 in women - in other words, men carry a relatively wider jaw for a given cheekbone width. One honest wrinkle: in this app's own rated faces, a somewhat narrower jaw tracked higher ratings for both sexes, so the bands keep the male-female ordering while leaning narrow overall. None of this makes one outline better than another in the abstract.

Reading your own number

A value toward the wider end means your jaw and cheekbones are close in width, a squarer and stronger lower face; a lower value means a more tapered outline. What suits a face depends on the look you are after and the rest of your proportions, not on a single figure. Remember too that the jaw points are approximated, and that body fat and a slight downward camera angle can both make the jaw look wider than it is, so judge from a lean, eye-level, relaxed photo.

What is adjustable and what is bone

How wide your jaw looks is part soft tissue and part skeleton. Lower facial body fat and, in some people, the bulk of the masseter (chewing) muscles add apparent width; reducing fat reveals the underlying bone, and masseter muscle can be slimmed with muscle-relaxant injections over a few weeks, though the effect is temporary.

The bigonial bone width itself is fixed in adults. Jaw-narrowing or jaw-augmenting surgery and implants can change it permanently, but these are significant procedures mentioned here only to describe the options, not to recommend them. For most people the honest takeaway is that leanness, grooming and photography move the appearance while the bone stays put.