Harmony & facial ratios
Brow Length to Face Width Ratio
1 min read · Updated October 4, 2026
The combined length of both brows compared with the width of the face.
What it is
This measures how much of the face's width the brows span. It captures whether the brows look short and neat, or long and extend toward the temples.
How it's measured
Each brow is measured horizontally from its inner corner to its tail, the two lengths are added, and the total is divided by cheekbone width.
How it's read
Brows that reach roughly the outer corner of the eye and give the upper face a balanced frame read well. Very short brows can leave the eye area looking bare, and very long ones can dominate it.
What affects it
This reflects the brows as they are, including gaps or sparse tails that landmark placement may cut short. Brow grooming and filling change how long they look and are the most direct lever.
Related measurements
In the same group: Lateral Canthal Tilt, One Eye Apart Test and Eye Aspect 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.