Upload your photo to measure how your philtrum, lips, and chin divide your lower third — and compare it to the classical ideal proportions used in facial aesthetics.
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The lower third of the face runs from the base of your nose to the bottom of your chin. It contains your philtrum, lips and chin, and its proportions have a big effect on how balanced, youthful and defined your face looks.
The classical guideline divides it in two at the point where your lips meet: the upper lip takes up about one third, and the lower lip and chin together take up about two thirds. When that balance is off — a long philtrum, a short chin, very thin or very full lips — the whole face can look different, even if your other proportions are ideal.
This free lower third analyzer splits your lower third into three parts — philtrum, lips and chin — and shows what percentage each one takes up.
The analyzer runs Google's MediaPipe Face Mesh in your browser (your photo isn't uploaded) and places landmarks at the base of your nose, the top of your upper lip, the bottom of your lower lip and the bottom of your chin. It divides your lower third into:
| Section | From | To | Target |
|---|---|---|---|
| Philtrum | Base of the nose | Top of the upper lip | About 22% |
| Lips | Top of the upper lip | Bottom of the lower lip | About 44% |
| Chin | Bottom of the lower lip | Bottom of the chin | About 34% |
It adds up how far each section is from its target and turns that into a score out of 100.
| Score | Result |
|---|---|
| 80–100 | Ideal lower third |
| 62–79 | Well-balanced |
| 45–61 | Slight imbalance |
| Below 45 | Notable imbalance |
The targets follow the same idea as the classical rule — a relatively short upper lip area above a longer lower lip and chin — but measure the lips as their own section, so you can see whether your philtrum, lips or chin is driving any imbalance.
The lower third changes noticeably with age. The upper lip lengthens and thins, the lips lose volume, and the skin along the jaw loosens. All of these push the philtrum percentage up and the lip percentage down — which is why a short philtrum and full lips are associated with youth.
Any medical option should be planned with a board-certified specialist looking at your whole lower face, because changing one part changes the balance of the others.
The lower third is the part of the face from the base of the nose to the bottom of the chin. It contains the philtrum, lips and chin.
The classical guideline is that the upper lip takes up about one third of the lower face and the lower lip and chin about two thirds. This analyzer targets about 22% philtrum, 44% lips and 34% chin.
The most common reasons are a long philtrum, thin lips or a short chin. Your breakdown shows which section is furthest from its target.
Facial hair and lip filler can change how they look. Lip lifts and chin procedures can change them permanently, and should be planned with a qualified specialist.
Yes. It's free, needs no signup, and runs in your browser.