Harmony & facial ratios
Mouth Corner Position
1 min read · Updated October 4, 2026
Whether the corners of your mouth sit above or below the centre of your lip line.
What it is
Mouth corner position describes the natural tilt of the mouth: corners slightly above the centre give a gentle upturn, level corners are neutral and corners below the centre give a downturned, sad or tired look.
How it's measured
The height of the two mouth corners is compared with the midpoint of the lip line, in millimetres using the average pupil-distance scale. Positive means the corners sit above the centre.
How it's read
A neutral to slightly upturned mouth reads as pleasant and approachable. A strongly downturned mouth can read as stern or tired, though it is partly a resting-expression effect.
What affects it
This is the most expression-driven ratio of all: a tense jaw, a held smile or a frown change it immediately. Relax your face, let your mouth rest closed and retake if you were smiling.
Related measurements
In the same group: Chin to Philtrum Ratio, Mouth Width to Nose Width and Interpupillary-Mouth Width Ratio. 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.