Brows · Side photo

Forehead slope

browridge inclination

How far the forehead leans back above the brow ridge.

How it's measured

Angle between the line from the brow ridge (glabella) up to the hairline (trichion) and the vertical, where vertical means square to the Frankfort plane (ear canal to lower eye rim). Positive when the forehead slopes back.

Reference range

Male reference

12–23°

Female reference

10–19°

Source: Community facial analysis formula (public spreadsheet), top range: men 12-23°, women 10-19°.

In the score

Counts toward the score with weight 4 (Community formula point table: browridge inclination, 4 points).

What changes it

• Needs a true side profile with the ear opening and the lower eye rim visible, so the head can be levelled before measuring.

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.