fWHR (facial width-to-height ratio)

fWHR stands for facial width-to-height ratio. It divides the width of the face by the height of its upper half. A wider, shorter upper face gives a higher ratio; a narrower, longer one gives a lower ratio. It is one of the few looksmaxxing measures with a research literature behind it, which is also why it is so often overstated.

How it is calculated

• Width — the distance between the outermost points of the cheekbones, called bizygomatic width (see zygomatic bones).
• Height — the distance from the upper lip to the top of the upper face. Studies differ slightly here: some measure to the brow, others to the upper eyelids.

Width divided by height is the ratio. Because the definitions vary, numbers from different sources are not always comparable.

What the research shows

Academic interest grew in the late 2000s, when studies reported links between fWHR and how dominant or aggressive a face is perceived to be, and in some cases with behaviour. The follow-up literature is mixed. Some associations have turned out small, others have not replicated consistently, and there is no consensus that the ratio predicts anything about a person. It is best understood as a description of proportion, not a reading of character.

Is there a good fWHR?

Forums quote target values. There is no clinical sense in which one ratio is correct, and no product, exercise or posture changes the underlying bone in an adult. What does change is the measured number. Tilting the chin down shortens the apparent height; a smile lifts the upper lip; a phone held close widens the middle of the face. The same person can produce noticeably different ratios from photos taken minutes apart.

What the scan measures

The free face scan calculates fWHR from facial landmarks, on your device, using bizygomatic width over upper-lip-to-eyelid height. It only measures once your face is square to the camera, takes the median across a few seconds of frames to cancel out the wobble described above, and uses the iris as a ruler to convert to millimetres. It counts toward the frame score, and no product is ever recommended against it.

What is changeable

The ratio is a property of bone. How the face around it reads is not. Facial fat softens the cheekbones and the line below them, so body composition does more for how wide and defined a face looks than any measurement suggests — body recomp basics is the starting point. Skin that is hydrated and even catches light across the cheekbones instead of flattening them. Those are the inputs worth your attention; the ratio is worth knowing and then leaving alone.