Harmony & facial ratios
Middle Third
1 min read · Updated October 4, 2026
The band from the brow line to the base of the nose, as a share of total face height.
What it is
The middle third holds your eyes and nose. It runs from the brow line down to the base of the nose (the subnasale) and is shown as a percentage of the full hairline-to-chin height.
How it's measured
Both ends come from landmarks: the brow line is taken midway along each brow, and the nose base is the point where the nose meets the upper lip. The result is expressed against the same total height as the other two thirds, so the three always add up to 100%.
How it's read
A middle third close to the other two reads as a balanced, compact face. A long middle third gives a longer nose or midface; a short one can make features look crowded together. Because the three thirds share one total, a miss in one shows up in the others too.
What affects it
This band is stable against hair and styling, so it is usually the most trustworthy of the three. Head pitch still moves it, because tilting your head up or down changes how much of the nose region the camera sees. For a clean reading, keep the camera at eye level and your head level.
For more detail, see the full guide: Facial thirds.
Related measurements
In the same group: Lower Third, Lower Third Proportion and Top Third. 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.