What Are Facial Thirds?
Understand facial thirds: upper (hairline to brows), middle (brows to nose base), lower (nose base to chin). Learn ideal proportions and test yours with AI.
The three zones
Classical facial aesthetics divides the face vertically into three equal thirds: upper (trichion to glabella), middle (glabella to subnasale), and lower (subnasale to menton). Balanced thirds contribute to a harmonious, “model-like” proportion.
- Upper third: forehead height and hairline
- Middle third: eye spacing, nose length, midface
- Lower third: chin height, lip-chin balance, jaw
Common imbalances
A long lower third can make the chin look prominent; a short middle third can make the eyes feel crowded. Side profile and maxilla position often explain thirds issues better than front view alone.
Test yours with AI
Upload a front-facing photo to our facial thirds analyzer for an estimate of each third relative to classical ideals — useful before optimizing photos, hairstyles, or discussing changes with a professional.