Insights · How it is measured here · scale

Any absolute measurement in millimetres
what a photo can give, and how we take it.

Everything as ratios of your own features: iris width, inter-pupil distance, face height. That is the only scale a single photo supports. Each ratio also gets a score out of 100.

Also searched as how to measure your face, face measurements in mm and facial measurements.

Why the textbook version needs more than a photo
scale
Canthion reports
Photographic equivalent

What we report

Everything as ratios of your own features: iris width, inter-pupil distance, face height. That is the only scale a single photo supports. Each ratio also gets a score out of 100.

130 mm or 145 mm?iris width1 inter-pupilface width, in units of your own features
A single uncalibrated photo carries no scale. The report states every distance in units of your own features (iris width, inter-pupil distance, face height) rather than in millimetres.

Why not the clinical number itself

Scale is unrecoverable from a single uncalibrated 2D image. Without a reference object in frame or a metric 3D capture (TrueDepth, stereophotogrammetry), a photo cannot say whether a face is 130 mm or 145 mm wide. It can only say what the proportions are. That is why every Canthion output is a ratio or an angle.

Sources
What we measure instead

Ratios of near-coplanar frontal distances, angles relative to the interpupillary line, and skin appearance. Each comes with an error bar, and each is placed against a population you choose. Start an analysis or read the methodology.

What the report gives you insteadAll 24 measurements

Same question, different measurement: what the clinical version needs, and what a photograph can give instead.

Gonial anglebony · what a photo can giveRamus : mandibular body ratiobony · what a photo can giveNasofacial angle, and any profile angle taken against a planelateral · what a photo can giveRicketts E-line, Steiner S-line, Holdaway H-linelateral · what a photo can giveOrbital vector / infraorbital rim positionbony · what a photo can giveOgee curve scoreinvented · what a photo can give

What is measured instead

Intercanthal distance : palpebral fissure lengthEyes · tier AAlar base width : intercanthal distanceNose · tier AMouth width : alar base widthLips · tier AUpper : lower vermilion heightLips · tier APhiltrum length : chin heightLower face · tier APalpebral fissure height : lengthEyes · tier A
← Fitzpatrick type / Individual Typology Angle from RGBGonial angle →

How every bone-level measurement is taken here · methodology · glossary · all 35 insight pages