INPUT
One clear front view
Unusable images are rejected instead of receiving a guessed score.
Jawline, as an angle and a width.
Measure the signed turn of your jaw contour on each side and jaw width relative to face width. This is a front-view mesh reading; it does not measure a clinical bone angle.
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
A jawline test here returns two things rather than a verdict: the signed turn of the jaw contour at each side, in degrees, and the gonion-to-gonion width as a share of face width. Both are measured from the front, both are reported with the reference value beside them, and neither is part of the 0–100 composite.
OUTPUT
Contour angles + width ratio
Left and right contour turns in degrees and jaw / face width. These readings are separate from the composite score.
01
Jaw contour angle: the gonial proxy
Three contour vertices per side are used: one up the ramus, one at the jaw corner, one toward the chin. The engine takes the signed turn from the corner-to-ramus vector to the corner-to-chin vector. The canonical face returns −14.69 degrees on the left and +14.69 on the right. The signs are opposite because the contour is mirrored, not because the reference face is lopsided.
02
What this is not
These are mesh contour vertices, not a clinical gonion located on bone. The vertex indices are published in the engine so the measurement can be reproduced exactly, but a number from this page is not a cephalometric reading and should not be used as one.
03
Jaw width
The second measurement is the horizontal distance between the two jaw-corner vertices, expressed as a share of face width. The canonical face measures 0.775. A larger number means a jaw that is wide relative to the face above it; it does not mean a better or worse jaw.
04
Why a sharp jawline is not scored
What people usually mean by a sharp jawline is chin projection and the angle of the submental line — both of which are depth. This engine accepts a front view, and chin projection, facial convexity and nasal projection are all listed as not scored for that reason. Reporting a front-view proxy as if it measured projection would be the dishonest option.
05
Not part of the composite
Neither the gonial angle nor the jaw width feeds the 0–100 score. That number comes from four weighted dimensions — symmetry 35%, facial thirds 25%, facial fifths 25%, reference ratios 15% — and those weights are fixed and published. The jaw measurements sit beside the score as separate readings. The face rating formula explains those four dimensions; canthal tilt is another separate reading that does not affect the composite.
06
Gates before measurement
The jaw measurements run behind the same quality gates as the score. No face, more than one face, a face too small in frame, a head tilted or turned past threshold, or geometry the engine cannot trust produces a rejection and no numbers at all. A refused measurement is more useful than a confident wrong one.
07
Private by construction
The jaw contour coordinates are computed in your browser and are never transmitted. We do not receive your photo, your landmarks or your angles. What we do count is that a page was visited, that a scan ended, and a refusal reason code if it was refused — never a measurement, and no account is required.
FAQ
Questions, answered plainly.
What does the jawline test measure?
Two readings: the signed turn of the mesh contour at each side of the jaw, in degrees, and the distance between the two jaw-corner vertices as a share of face width. This gonial proxy is not a clinical bone angle.
What is the gonial angle here?
The signed turn from the jaw-corner-to-ramus vector to the jaw-corner-to-chin vector, measured on mesh contour vertices. The canonical face returns −14.69 degrees left and +14.69 degrees right.
Why is my left value negative and my right positive?
That is the sign convention, not an asymmetry finding. The contour runs in mirrored directions on the two sides, so a symmetrical jaw produces equal magnitudes with opposite signs.
Is this the same as a clinical mandibular angle?
No. These are face-mesh contour vertices, not bone landmarks. The measurement is reproducible because the indices are published, but it is not a cephalometric measurement.
Can it tell me if I have a sharp jawline?
Not reliably. Sharpness is mostly chin projection and the submental angle, which are depth measurements. This engine measures a front view, and projection is explicitly listed as not scored.
Does my jawline change my face rating?
No. The 0–100 composite is built from four fixed weighted dimensions, and the jaw measurements are not among them.
Ready to see the measurement?
Run the free scan in your browser to see contour angles + width ratio, the measurement points and the reference values.