Most important facial ratios
Facial width to height ratio (FWHR): 1.8+
Midface ratio: 0.95-1.0
- Measured in Frankfurt plane by dividing the interpupillary distance (distance between the centers of the pupils) by the distance between the nasion to the upper lip border.
Mouth to nose ratio (width): 1.5-1.62
Lower to upper lip ratio (height): 1.6
Chin to philtrum ratio: 2.0+
Bigonial to bizygomatic ratio: 0.8-0.95
ESR (eye separation ratio): 0.45-0.47
- Measured by dividing the interpupillary distance (distance between the centers of the pupils) by the bizygomatic width.
Gonial angle: around 115°
- Measured by calculating the angle formed upon setting the vertex at the gonion with the arms set along the mandible and the ramus.
Eyes canthal tilt: 0°-6°
- Measured by calculating the angle formed upon setting the vertex at the medial canthus with the arms set parallel to the floor and the lateral canthus.
EME (eye mouth eye) angle: around 48°
- Measured in Frankfurt plane by calculating the angle formed upon setting the vertex at the center of the lips with the arms crossing the center of eyes pupils. EME angle is a good indicator of masculinity (lower values = more masculine).
Eyes palpebral fissure width to eyes height ratio: 3.0-3.5
- Measured by dividing the eyes palpebral fissure width (distance between the medial to the lateral canthus of the eye) by palpebral fissure length.
Cervicomental angle: lower than 100°
- Measured in side view by calculating the angle formed upon setting the vertex at the hyoid with the arms set along the bottom of the chin and the neck. The higher this angle = double chin appearance.
Facial fifths: equal 1/5
- Nose width, palpebral fissure length and length between the lateral canthus to the ear should be approximately 1/5th of bizygomatic width.
Facial thirds: equal 3rds (vertically)
Facial middle half to lower half height: equal
Facial symmetry: equal facial features
- The kind of symmetry that matters (lacking) for the majority of people and is overlooked on .org and psl communities is posture and dental occlusion related. Basically the kind of symmetry that is achieved by the fact of your upper jaw and eyes being laterally aligned with lower jaw and chin and parallel to each other (no tilting).
Facial convexity angle: 170°