Square Face Shape
Put your three ratios in the box. It checks them against the square row using the published targets and the same tolerances the photo detector applies. Nothing measured yet? The detector reads the four distances from one photo and scores all seven rows in a single pass.
Those three placeholders are the square targets. A ratio still counts as a match at up to 0.30 away on the length target, and up to 0.12 away on each of the two width targets.
The square row, copied from the published file
| Ratio | Square target | Allowed distance |
|---|---|---|
| Face length ÷ cheekbone width | 1.22 | 0.30 |
| Forehead width ÷ cheekbone width | 0.97 | 0.12 |
| Jaw width ÷ cheekbone width | 0.95 | 0.12 |
These five numbers are the row Square in face-shape-ratios.csv, published on the data page under CC BY 4.0 and archived with a DOI. Nothing here comes from an outside standard: it is what this site compares a face against, put in a downloadable file so it can be checked.
Reading the square row
The four distances are forehead width at the temples, cheekbone width at the widest point, jaw width corner to corner, and face length from hairline to chin. Length is fixed at 100, so the other three arrive as percentages of it — proportions inside one photograph, not millimetres. The landmark indices each distance uses are listed in face-shape-measurements.csv.
What defines the square row is the pair of width ratios: 0.97 at the forehead and 0.95 at the jaw, almost level with the cheekbones at both ends, packed into a short overall length of 1.22.
Taking the measurements yourself
Tape flat on the skin, standing square to a mirror, arm's length back. Write the numbers down; the four rows in the printable tape-measure worksheet (PDF) are laid out for exactly that, and the method — including how to settle a disagreement between two readings — is on how to know what face shape you have. The thresholds you compare against are the same published file either way.
What this page asks of you
No charge, no account, no upgrade tier. There is also no daily limit or cap on the number of photos and measurements you run through the site — no counter sits behind any of it. Nothing on this page is held back for a paid tier, and you will not be asked to sign in to read a number that is already published.
Where the photo and the typed numbers go
One page of JavaScript and a model file: the model arrives once with the page, then the measuring runs in your browser tab, so the photo is never uploaded anywhere and no server of ours sees it. The box at the top of this page is the same story — the three ratios are compared inside the page and go nowhere.
How the square row sits next to the others
| Profile | Length ÷ cheekbone | Forehead ÷ cheekbone | Jaw ÷ cheekbone | Against square |
|---|---|---|---|---|
| Round | 1.18 | 0.90 | 0.86 | Similar length, but both widths pull in |
| Heart | 1.42 | 1.00 | 0.70 | Forehead level with the cheekbones, jaw narrow |
| Triangle | 1.32 | 0.80 | 1.02 | Jaw overtakes the cheekbones |
| Oblong | 1.75 | 0.88 | 0.84 | Noticeably longer face, widths pulled in |
Four rows again from the same published file. The file makes one thing easy to see about this shape: square is the only row of the seven where both width ratios sit at 0.95 or above — forehead 0.97 and jaw 0.95 — which is why the jaw corners, not the cheekbones, are what people point at when they describe it. With 0.12 of room on those two ratios, a face can drift towards the round row without ever leaving square territory.
Square face shape questions
Which is wider on a square face shape, the jaw or the forehead?
Almost the same. This site's square row has the forehead at 0.97 and the jaw at 0.95 of the cheekbone width, so the forehead is a shade wider — the near-match between the two ends is the point.
Is a square face shape the same as a rectangular one?
There is no rectangle row in this data. A face that reads square but clearly longer than the 1.22 length target drifts towards the oblong row at 1.75, which is where the longer version of the same shape lives here.
Why is my jaw angle easier to see than my cheekbones?
Because in this data the jaw sits at 0.95 of the cheekbone width on a square face — the two widths are nearly level, so the corner where the jaw turns is a firmer edge than on rows like heart (0.70) or diamond (0.72).