Harmony & facial ratios
Facial Symmetry
1 min read · Updated October 4, 2026
How closely the left and right sides of your face mirror each other.
What it is
No face is perfectly symmetrical, and small differences are completely normal. Facial symmetry measures how far the two sides drift apart, as a percentage of face width, where 0% would be a perfect mirror.
How it's measured
Pairs of matching landmarks (eye corners, brows, nostrils, mouth corners, cheeks and jaw corners) are mirrored across the face's midline, and the average distance between each mirrored point and its partner is divided by cheekbone width. Lower means more symmetrical.
How it's read
Differences of a percent or two are typical and barely visible. Larger gaps are noticeable. Symmetry is associated with higher perceived attractiveness in many studies, though the effect is modest, which is why it counts in the overall score without dominating it.
What affects it
Much of the asymmetry in a photo comes from the photo, not the face: a turned head, a tilted camera, uneven lighting or a lopsided expression all add apparent asymmetry. Face the camera squarely. The Features pillar also breaks symmetry down by region.
Related measurements
In the same group: Jaw Slope, Bigonial Width and Jaw Frontal Angle. The full list is on the Harmony overview.
See it on a full report
Open the sample report to see every measurement, score and highlight on a real example.