Free AI jawline analyzer. Real gonial angle measurement, symmetry, taper, and lower-third proportions — computed from 478 facial landmarks and drawn on your photo. No login, photo stays in your browser.
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The jawline score is a 0–100 measure of how closely your jaw geometry matches the proportions surveyed as most attractive in published preference studies. Most adults score between 65 and 85. Where you fall:
90–100 — Chiseled
Top tier — sharp, well-defined jawline with a gonial angle in the attractive 120–130° range, strong taper, and high left-right symmetry. Rare; even faces commonly rated as having strong jawlines often score in the 80s.
80–89 — Defined
Strong angles and clear jawline outline. Most metrics in their attractive ranges with at most one component slightly off. The most common score band for faces perceived as having 'a good jawline' in everyday life.
70–79 — Balanced
Average definition with standard proportions. Gonial angle close to ideal but possibly with reduced taper or asymmetry. The median range — most adult jawlines fall here.
60–69 — Soft
Rounder jawline with gentler angles. Often associated with younger faces, higher body fat, or genetic facial structure. A soft jawline is not a defect — many highly attractive faces score here.
Below 60 — Distinctive
Outside typical bands on the math. The score measures distance from the surveyed-attractive jawline range and often misses faces where the lower third is intentionally distinctive — strong chin, broad jaw, or a feature outside the ideal proportion.
Four geometric components, weighted by how strongly each correlates with rated jawline attractiveness in survey research. Every measurement is shown on the page so you can verify it against your photo.
The angle at the gonion (mandibular angle) where the ramus meets the body of the mandible. Computed front-on as the angle from chin to gonion to cheekbone. Surveyed attractive range is 120°–130° in published preference studies (Naini et al., 2008; Internet survey on the ideal male jaw, 2016).
Left vs right jaw landmark alignment, measured against the facial midline. Asymmetry of more than ~5% is visually detectable; under 3% reads as visually symmetric.
Jaw width relative to cheekbone width (bigonial / bizygomatic ratio). The attractive V-taper sits in the 0.78–0.88 range; lower means a more pronounced cheekbone-to-jaw narrowing.
Length of the lip-to-chin segment relative to total face height. The classical aesthetic ideal places this around 24% — long enough to convey lower-face length but proportionate to the upper two thirds.
The gonial angle is the angle at the gonion — the bony point where the ramus (the vertical part of the jawbone, behind the ear) meets the body of the mandible (the horizontal part along the jawline). It's the single most-cited metric in jawline aesthetics and the one that most distinguishes a sharp jawline from a soft one.
Sharp
115–122°
Strongly defined. Common in faces commonly rated as having chiseled or angular jawlines. Below 115° starts to read as overly sharp or surgical.
Attractive Range
120–130°
The peak preference range across published surveys, with 125° as the most-rated-attractive male value. Most adults whose jawlines are described as "good" fall in this band.
Soft
130–140°
Rounder, gentler jawline. Common in younger faces and faces with higher body fat. A soft gonial angle is not a defect — many attractive faces sit here.
A note on measurement: the gonial angle is normally measured from a lateral cephalogram (side-view skull X-ray). From a front photo we compute a robust front-facing approximation — the angle at each jaw landmark formed by the chin, the gonion, and the cheekbone. The two measurements correlate well for symmetric faces but the front-on version can underestimate the true cephalometric value by 5–8° on deeper mandibles.
Front-facing, eye-level camera
Tilt distorts the gonial angle measurement most of all. Hold the camera at eye level, square to your face. A chin-up angle inflates the apparent gonial angle by 5–10°; a chin-down angle deflates it.
Neutral expression
Smiling pulls the cheek and jaw landmarks. A relaxed, closed-mouth expression gives the most stable jawline measurement.
Hair off the jaw
Hair covering the jaw outline blocks landmark detection on the affected side, often inflating asymmetry. Tie hair back so the cheek-to-chin line is visible.
Even, soft lighting
Hard shadows under the jaw exaggerate definition; flat lighting hides it. Diffused front lighting (window light works well) gives the cleanest jawline reading.
Most adults score between 65 and 85. A score of 80+ indicates a clearly defined jawline — gonial angle in the 120–130° attractive range, strong V-taper, and good left-right symmetry. Faces commonly cited as having 'a good jawline' in surveys typically score in the 80–95 range; perfect 100 is rare and not necessary for an attractive jawline.
Published preference studies (most commonly cited: a 2016 internet survey on ideal male jaw aesthetics, plus Naini and colleagues' work on chin and mandibular preferences) converge on 120°–130° as the most-rated-attractive range, with the male ideal often pinned around 125°. Below 120° reads as overly sharp; above 130° reads as soft. Your number is shown alongside the ideal range so you can see exactly how close you fall.
True gonial angle requires a lateral cephalogram — a side-view X-ray of the skull with the gonion, gnathion, and ramus identified. From a front photo you can compute a robust front-facing approximation: the angle at the jaw landmark formed by the chin, the gonion, and the cheekbone on each side. We compute both left and right, average them, and show all three numbers. The front-facing approximation correlates strongly with the cephalometric measurement for symmetric faces but underestimates the true angle for very deep mandibles.
Most online jawline tools are vision-LLM wrappers — they send your photo to a language model and have it hallucinate a 7/10 score from a vibes-based read. Ours uses MediaPipe's 478-landmark face mesh and computes real geometric measurements: angles, distances, ratios. The same photo always returns the same score. The result includes the actual degree number and the formula behind every component, not a black-box rating.
Some aspects, yes. Body fat reduction reveals the underlying jaw structure — most 'weak jawline' impressions are submental fat rather than skeletal. Posture (chin tucks, neutral neck), tongue position (mewing), and chewing tougher foods tone the surrounding musculature. Skeletal jaw structure (gonial angle, ramus length) is fixed after early adulthood; cosmetic procedures like jaw filler, masseter botox, or genioplasty can change soft-tissue contours. See our jawline guides for protocols.
Mewing — keeping the tongue pressed against the palate at rest — has not been proven to change adult skeletal jaw structure in controlled studies. It can improve posture, tongue tone, and breathing pattern, which subtly affect how the lower face presents in photos. Children and adolescents whose jaws are still growing may see modest skeletal changes; adults should expect minor cosmetic effects, not a transformation. Our guide on mewing covers what's evidence-based and what isn't.
Three common reasons. First, photo conditions: chin-up angles flatten the gonial angle measurement, and any tilt asymmetrically alters the left/right gonion positions. Use a neutral, front-facing, eye-level photo. Second, body composition: submental fat reduces apparent jaw definition without changing the underlying skeletal angles. Third, the ideal range is statistical — about 70% of adults have gonial angles outside the 120–130° band, so an 'average' jawline is mathematically common.
The current model uses a single attractive range for the gonial angle (120–130°) drawn from male-preference studies, which is also broadly applicable to female jawlines (preferences for female jaws skew slightly softer, around 125–135°). The taper and lower-third targets are general. If you want a gender-specific weighting, run the full analysis tool which adapts to features.