INPUT
One clear front view
Unusable images are rejected instead of receiving a guessed score.
Facial ratio analysis with the reference printed.
Measure your facial thirds and fifths from one photo. See each proportion beside the fixed reference used by the engine.
JPG, PNG or WebP · One face, straight on, in even light.
Processed in this browser. Your photo stays in this tab until you clear it or close the tab.
More about this measurement
Facial ratio analysis here means two specific groups: the facial thirds, which divide face height, and the facial fifths, which divide face width. Both are measured against reference values taken from the engine’s canonical face — and both are shown to you as raw proportions, not only as a score.
OUTPUT
Three thirds + five fifths
Measured proportions, reference bands and the points used. The upper third is estimated from a forehead landmark.
01
Facial thirds
The thirds split the face into upper, middle and lower bands. The reference proportions are 0.191, 0.395 and 0.414 — which is visibly not the textbook one-third each. The reason is stated plainly below, because a facial ratio analysis that hides it is measuring against a number it cannot reach.
02
Why the upper third is 0.191, not 0.333
The classical rule describes anatomical landmarks, including the hairline. What the detector returns is a mesh vertex near the middle of the forehead, not a hairline. Measured that way, the canonical face itself shows an upper third of 0.191. Grading against 0.333 would deduct the same points from every face on earth, including the reference face, so the upper third is flagged as estimated and graded against the value that was actually measured.
03
Facial fifths
The fifths split face width into five vertical bands, nominally one eye-width each. The reference is 0.210, 0.169, 0.242, 0.169, 0.210. That the first and fifth match to the digit, and the second and fourth likewise, is not a coincidence — it is evidence that the left and right landmark indices are paired correctly, and the sanity test in the engine checks exactly that.
04
Face proportions, scored
Each group produces one deviation from its reference, and each deviation is mapped to its own 0–100 sub-score. Facial thirds reach the half-point at a deviation of 0.045 and facial fifths at 0.040, so the fifths are graded slightly more tightly. Both carry 25% of the composite. The face rating formula explains how they combine with symmetry and the golden-ratio group.
05
A facial proportion calculator that shows its inputs
The result page prints your measured proportion for each band alongside the reference band it was compared with. You can read the comparison yourself rather than accepting a number. Two faces can reach the same sub-score from different band patterns, which is why the underlying values stay visible.
06
Limits of front-view ratios
Every proportion here is measured in the image plane. Nasal projection, facial convexity and chin projection are not scored, because they are depth measurements and this engine accepts a front view. A photo that is turned, tilted, too small, or contains more than one face is rejected instead of being measured badly.
07
Nothing you scan leaves your device
The proportions are computed in your browser from a photo that never leaves it. We do not receive the image, the coordinates or the ratios. What we do count is that a page was visited and that a scan ended — a refusal adds its reason code — and none of that carries a measurement.
FAQ
Questions, answered plainly.
What does facial ratio analysis measure?
Two groups: the facial thirds, which divide face height into upper, middle and lower bands, and the facial fifths, which divide face width into five vertical bands. Each group is compared against reference proportions measured from the engine’s canonical face.
Why are the reference thirds not one third each?
Because the upper boundary available to the detector is a forehead mesh vertex, not a hairline. The canonical face measures 0.191 there, so 0.191 is the reference. The value is labelled estimated in every result for that reason.
Are the facial fifths really one eye-width each?
Not on the canonical face. The measured reference is 0.210, 0.169, 0.242, 0.169, 0.210 — the central band between the eyes is the widest, and the outer bands are wider than the eye bands.
How much do the ratios affect my overall score?
Facial thirds carry 25% and facial fifths carry 25%, so the two ratio groups together are half of the composite. Symmetry carries 35% and the golden-ratio group carries 15%.
Can I see the raw proportions, not just the score?
Yes. Every measured band is displayed next to the reference band it was compared against, including the one flagged as estimated.
Is the facial proportion calculator free and private?
Yes to both. No sign-up, email or payment, and the photo and its measurements never leave your browser.
Ready to see the measurement?
Run the free scan in your browser to see three thirds + five fifths, the measurement points and the reference values.