A free golden ratio face test that measures three phi ratios from a photo and scores how close they land to 1.618, in your browser.
What the golden ratio face test measures
The golden ratio face test at faceshapetest.app is a free tool that reads your face and reports how closely three of its proportions match phi, the number 1.618.
It runs entirely in your browser using MediaPipe Face Landmarker, a model that places 478 points across a face from a single photo. Nothing is uploaded. The image never leaves your device.
Phi shows up constantly in discussions of facial beauty, usually attached to a claim that the most attractive faces fit it closely. This test measures that claim directly, using three specific ratios drawn from your landmarks, and turns the result into a single golden ratio score from 0 to 100.
It is worth saying plainly, before the numbers: this is a real, precise measurement of a proportion that has a weak track record as a beauty predictor.
We built it because people ask for it by name, and because the geometry itself is genuinely interesting. We just do not want you to walk away thinking a number near 1.618 means anything about how attractive you are.
The same scan behind this page also produces your face shape, a full attractiveness score where phi is one ingredient among four, a symmetry reading, and your canthal tilt. All of it comes from one photo and one pass of the landmark model.
The three ratios we measure
A golden ratio face test needs something to actually compare against phi. We use three ratios, each built from landmarks that MediaPipe can locate reliably on a straight-on photo.
| Ratio | What is divided by what | Phi target | What moves it |
|---|---|---|---|
| Face length to face width | Mid-forehead-to-chin length ÷ cheekbone width | 1.618 | Camera distance, head tilt, the estimated hairline point |
| Mouth width to nose width | Distance between mouth corners ÷ distance between nostril edges | 1.618 | Smiling or parted lips, wide-angle lens distortion |
| Nose base to chin, and lower lip to chin | Nose-base-to-chin length ÷ lower-lip-to-chin length | 1.618 | Head tilt, jaw position, chin angle |
The first ratio needs a small caveat. MediaPipe's 478 points cover the face itself but stop at the brow, since there is no reliable landmark for a hairline that varies with hair growth and styling.
To estimate full face length, we take the distance from the glabella, the smooth point between your brows, down to your chin, and add an assumed upper third equal to the middle third below it. That is a reasonable estimate for most faces, but it is an estimate, not a direct measurement.
The other two ratios use landmarks the model tracks directly: mouth corners, nostril edges, the base of the nose, the lower lip and the chin. Those readings are more exact, though they still shift with expression and head angle like every measurement on this page.
How the 0 to 100 score works
Phi is 1.618. For each of the three ratios above, we calculate how far your measured value sits from 1.618, as a proportion of that target. A ratio of exactly 1.618 has zero distance from phi. A ratio of 1.4 or 1.9 sits further away.
We average the three distances into a single figure, then convert that average into a score from 0 to 100, where 100 would mean all three ratios land exactly on phi and lower scores mean the average distance from phi is larger.
Each of the three ratios is reported on your result individually, alongside the combined score, so you can see which one is driving the number.
This is the same phi comparison used inside the full attractiveness score, just isolated here and given its own page. There, it counts for 15 percent of the total. Here, it is the whole story.
What is a good golden ratio score?
Scores cluster in predictable bands, and most decent frontal photos land somewhere in the middle to upper range. None of these bands is a verdict on your face. They describe how close your measured ratios sit to one specific number.
| Score | What it means |
|---|---|
| 85–100 | Very close to phi across all three ratios |
| 70–84 | Close to phi, with normal variation |
| 55–69 | Typical distance from phi, common for real faces |
| Below 55 | Usually a photo issue, not an unusual face |
A score below 55 is worth a second look at the photo before anything else. Camera distance is the single biggest factor in these three ratios, more than any other variable we can measure.
A wide-angle phone lens held close to your face enlarges the nose and compresses the outline of the face, which pulls the face-length ratio and the mouth-to-nose ratio away from phi regardless of your actual proportions.
Where the golden ratio face idea comes from
Phi is a real mathematical constant, roughly 1.618, that appears in geometry and in some patterns of natural growth. It has fascinated mathematicians and artists for centuries, long before anyone applied it to faces.
The specific claim that beautiful faces fit phi comes mostly from one source: the Marquardt beauty mask, a facial template built by Stephen Marquardt, a California oral surgeon, in the late 1990s and popularized through the 2000s.
The mask overlays a series of golden-ratio-based shapes onto a face and is marketed as a beauty analysis tool.
From there, the idea spread mostly through media rather than research. Articles claiming to reveal the "most beautiful face according to science," usually built around a handful of golden-ratio measurements on a single celebrity, have circulated online for years.
They make for a great headline. They are not, on their own, evidence that phi predicts attractiveness.
What the research actually finds
Peer-reviewed attempts to test the golden ratio face claim do not support it. When researchers measure real facial ratios across groups of faces rated for attractiveness, faces judged more attractive do not sit closer to phi than faces judged less attractive (Holland, 2008).
The pattern that shows up instead is that most human faces, regardless of how they are rated, have ratios that cluster somewhere between about 1.4 and 1.6, a range close to phi but not because phi is doing anything special.
Broader research on facial attractiveness points the same direction. Symmetry and averageness show a real but modest link to attractiveness ratings, and that link is stronger and better documented than anything involving a single golden ratio (Rhodes, 2006).
No proportion study has found phi to be a reliable, standalone predictor of how attractive a face is judged to be.
None of this makes the golden ratio face test meaningless. It is a genuine, repeatable measurement of a genuine mathematical relationship in your face. It is just not, on the evidence available, a measurement of beauty.
That is exactly why it carries only 15 percent of the weight in our full attractiveness score, behind symmetry and the classical thirds and fifths.
Thirds and fifths are not the golden ratio
Two other classical proportion rules get mentioned in the same breath as the golden ratio face idea, and it is worth being precise about the difference, because they are not the same thing and do not involve phi at all.
The rule of thirds says the face divides into three roughly equal vertical sections: hairline to brow, brow to nose base, and nose base to chin. The rule of fifths says the face is roughly five eye-widths across, measured horizontally.
Both come from classical portraiture and anthropometric study, most thoroughly documented by researchers like Farkas, and both predate the golden-ratio-face trend by a long way.
Our scan reports thirds and fifths too, alongside the golden ratio, as part of the full attractiveness score. They are separate rules with separate targets: equal proportions for thirds, an even five-part split for fifths, phi specifically for the ratios on this page.
A face can sit close to the classical thirds and fifths while sitting further from phi, or the reverse. There is no reason all three should move together, because they are not measuring the same thing.
How to get an accurate reading
These three ratios are sensitive to how the photo is taken, more than to anything about your actual face. A few habits make a real difference to your golden ratio score.
- Hold the camera at eye level, not tilted up or down.
- Face the camera straight on, without turning your head to either side.
- Step back and zoom in slightly, rather than holding the phone close. A wide-angle lens up close enlarges the nose and shrinks the face outline, which distorts the first two ratios directly.
- Keep your head level. A tilt past about 8 degrees, or a turn past about 12 degrees, gets flagged as slightly turned. Past 20 to 25 degrees, we will ask you to retake the photo.
- Use a neutral expression. A smile widens the mouth and changes the mouth-to-nose ratio.
- Light your face evenly and pull hair back from your brow and jaw so the model can place landmarks cleanly.
None of this changes your face. It changes how accurately the camera and the landmark model can read it, which is the only thing standing between a reliable golden ratio score and a distorted one.
Frequently asked questions
What is a good golden ratio face score?
Scores from 85 to 100 sit very close to phi, 70 to 84 are close, and 55 to 69 are typical, since most real faces land somewhere in this middle range. Below 55 is usually a photo issue, like head angle or a close phone lens, rather than anything unusual about your face.
Does a low golden ratio score mean my face is badly proportioned?
No. The golden ratio is one classical proportion rule among several, and research finds it does not predict attractiveness ratings any better than chance. A low score just means your measured ratios sit further from 1.618 in this photo. It carries only 15 percent of the weight in our full attractiveness score for that reason.
Is the golden ratio face test scientifically accurate?
The measurement itself is precise: it reads real landmarks and calculates real ratios. Whether phi predicts beauty is a separate question, and peer-reviewed research says no. Treat this as an accurate geometry reading with a famous number attached, not as a verdict on how attractive a face is.
Why did my golden ratio score change between two photos?
Camera distance changes these ratios more than almost anything else. A wide-angle phone lens held close enlarges the nose and shrinks the face outline, which shifts the face length and nose width ratios noticeably. Head turn, tilt and expression move the score too, often more than your face changes day to day.
How is the golden ratio face test different from the attractiveness test?
The attractiveness test at /attractiveness-test blends four measurements, symmetry, thirds, fifths and the golden ratio, into one score, with phi weighted at only 15 percent. This page isolates just the golden ratio piece and reports each of the three ratios on its own, for anyone curious about phi specifically.
What is phi and why 1.618?
Phi is an irrational number, approximately 1.618, that shows up in mathematics and some natural growth patterns. It became linked to facial beauty mostly through Stephen Marquardt's beauty mask and later through viral articles claiming to reveal the "most beautiful face" using it. The math is real. The beauty claim is contested.
References
- Holland, E. (2008). Marquardt's Phi Mask: Pitfalls of Relying on Fashion Models and the Golden Ratio to Describe a Beautiful Face. Aesthetic Plastic Surgery, 32(2), 200-208.
- Rhodes, G. (2006). The Evolutionary Psychology of Facial Beauty. Annual Review of Psychology, 57, 199-226.
- Farkas, L. G. Anthropometry of the Head and Face. Raven Press. Standard reference for classical facial proportion canons, including facial thirds and fifths.