Thirds and shape · Front photo

Upper lip share of the lower face

lower third proportion

The classic split gives the upper lip one third of the lower face, and the lower lip and chin two thirds.

How it's measured

Height from the base of the nose (subnasale) to the lip line (stomion) as a share of the height from the base of the nose to the bottom of the chin (menton). Both are measured straight down from the eye line.

Reference range

Male reference

30–36%

Female reference

30–36%

Source: Community facial analysis formula (public spreadsheet), top range: within 1-3 points of 33%.

In the score

Counts toward the score with weight 5 (Community formula point table: lower third proportion, 5 points).

One number, one feature

One measurement describes one detail in one photo. Pose, lens and expression move it, and every reference range is an average from limited samples.