Which ratios the calculator compares
- Face length to width: forehead to chin, divided by cheekbone width.
- Mouth width to nose width: corner-to-corner mouth width divided by nostril width.
- Lower lip to upper lip: visible lower lip height divided by upper lip height.
- Mouth-to-chin to nose-to-mouth: how the lower third of the face is split.
- Face width to outer eye span: cheekbone width divided by the distance between outer eye corners.
- Nose-to-chin to nose length: the lower face compared with the length of the nose.
Each match percentage falls as your ratio moves away from 1.618 in either direction. The overall score is their average.
A note on face length
The model’s top point sits on the upper forehead, below most hairlines, so it cannot see the full forehead. To make the face-length ratio comparable with golden-ratio charts that measure from the hairline, the calculator scales it to a typical hairline position. If your hairline is unusually high or low, read that line with some caution.
Is the golden ratio really the key to a beautiful face?
Probably not. The idea became popular through a “phi mask” design, but studies have found that it fits some faces better than others and that phi on its own is a weak predictor of how attractive people find a face. A 2010 study by Pallett, Link and Lee found different ratios worked best for the faces they tested: an eye-to-mouth distance of about 36% of face length and a pupil distance of about 46% of face width. Our golden ratio guide covers the history and the evidence, and the attractiveness test uses those newer ratios.
Getting a consistent measurement
Take the photo straight on, at eye level, with a neutral expression and closed lips. Smiling changes mouth and lip ratios more than anything else on this page. Try two or three photos and look at which ratios stay stable; those are the ones that describe your face rather than the picture.
Privacy
Your photo is processed by a model running in this browser tab. It is never uploaded, and we never see it. See the privacy and biometric notice.