Side Profile Analysis

Measure facial angles and landmarks from your profile using lateral facial geometry.

Upload your side profile photo

True 90° profile with camera at ear height works best

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Analyze Your Facial Profile Geometry

Your side profile reveals structural relationships invisible from the front view—jaw projection, nose angles, chin position, and facial balance. Our AI-powered analysis measures key angles and landmarks used in orthodontics and facial aesthetics to give you objective insights into your profile characteristics.

Essential Profile Measurements

Facial Convexity

What It Measures: The overall curvature of your profile from forehead (glabella) to nose base (subnasale) to chin (pogonion). This angle reveals whether your profile appears straight, convex (protruding), or concave (recessed).

Reference Range: 8–16° (mean 12° ± 4°)

Clinical Insight: A straight to slightly convex profile (10–12°) is typically perceived as balanced. Profiles outside -12° to +10° may indicate skeletal imbalance requiring orthodontic evaluation.

Nasofrontal Angle

What It Measures: The angle where your forehead transitions to your nose at the nasal root (nasion). This defines how pronounced or subtle your nose bridge appears from the side.

Reference Range: 115–135°

Clinical Insight: Angles below 115° create a deeper nasal root depression, while angles above 135° produce a more continuous forehead-to-nose slope. Ethnic variation is substantial.

Nasolabial Angle

What It Measures: The angle between your nose tip (pronasale) and upper lip, measured at the base of the nose (subnasale). This controls whether your nose appears upturned or downturned.

Reference Range: 90–115° (typically 95–105° for men, 100–110° for women)

Clinical Insight: Angles below 90° indicate a downturned or drooping nose tip. Angles above 115° create an upturned appearance. Rhinoplasty often adjusts this angle for facial harmony.

Mentolabial Angle

What It Measures: The angle formed at the fold between your lower lip and chin. This reflects chin prominence and lower lip position relative to the chin.

Reference Range: 110–140°

Clinical Insight: Angles below 110° suggest a prominent or recessed chin. Angles above 140° may indicate weak chin projection. This angle guides genioplasty decisions.

Gonial Angle

What It Measures: The angle where your jaw ramus (vertical section) meets the jaw body (horizontal section). This determines jawline sharpness and definition from the side.

Reference Range: 110–130° (lower for men, typically 115–125°; higher for women, 120–130°)

Clinical Insight: Smaller angles create sharper, more defined jawlines. Larger angles produce softer, more rounded jaw contours. Age and bone remodeling affect this angle over time.

Ricketts E-Line

What It Measures: The position of your lips relative to an imaginary line drawn from your nose tip to your chin point. This assesses lip protrusion or retrusion.

Reference Range: Upper lip ~4mm behind, lower lip ~2mm behind the E-line

Clinical Insight: Lips significantly ahead of the E-line suggest dental protrusion. Lips behind the line may indicate retrusion. Orthodontists use this to plan tooth extractions.

Common Profile Classifications

Straight Profile

Characteristics: Minimal facial convexity (near 0°). Forehead, lips, and chin align on a relatively vertical plane. Balanced forward projection of the midface and lower face.

Aesthetic Perception: Often considered the ideal profile type in Western aesthetics. Associated with strong jaw definition and harmonious proportions. Common in Northern European populations.

Clinical Note: Research shows profiles within -2° to +2° convexity receive the highest attractiveness ratings across diverse evaluator groups.

Convex Profile

Characteristics: Positive facial convexity (above 16°). Midface appears more prominent relative to the forehead and chin. The profile curves outward at the nose-lip region.

Common Causes: Maxillary (upper jaw) protrusion, mandibular (lower jaw) retrusion, or a combination. Dental protrusion can also contribute to this appearance.

Clinical Note: Convexity above 16–20° may warrant orthodontic evaluation. Treatment options include growth modification in adolescents or orthognathic surgery in adults.

Concave Profile

Characteristics: Negative facial convexity (below 0°). Lower face projects forward relative to the midface. The chin appears prominent, with the midface appearing flat or recessed.

Common Causes: Mandibular prognathism (protruding lower jaw), maxillary deficiency, or both. Often genetic, particularly common in East Asian populations.

Clinical Note: Skeletal Class III patterns with concavity beyond -10° typically require combined orthodontic and surgical treatment for optimal facial balance.

Nose Profile Variations

Bridge Shape Categories

Straight/Roman Bridge

The nasal dorsum forms a relatively straight line from nasion to tip. Most common type globally. Associated with balanced nasofrontal angles (120–130°).

Convex/Aquiline Bridge

The bridge curves outward with a prominent dorsal hump. Creates a "hook" appearance. More common in Mediterranean and Middle Eastern populations.

Concave/Scooped Bridge

The bridge curves inward with a scooped or ski-slope appearance. Often paired with upturned tips. More common in East Asian populations.

Tip Rotation Categories

Neutral Tip

Nasolabial angle between 95–110°. The tip points generally forward without significant upward or downward rotation. Most commonly preferred across cultures.

Upturned/Celestial Tip

Nasolabial angle above 110–115°. The tip rotates upward, revealing more nostril show from the side. Often considered youthful and delicate in appearance.

Downturned/Hawk Tip

Nasolabial angle below 90°. The tip points downward, creating a drooping appearance. Can make the nose appear longer and the face more aged.

How Our Profile Analysis Works

Upload Side Profile Photo

Take a true 90-degree profile photo with only one eye visible, camera at ear height, and hair off forehead. Plain background recommended. The AI segments your head outline from the background.

Landmark Detection

Advanced computer vision identifies ten soft-tissue landmarks: glabella, nasion, pronasale, subnasale, upper/lower lips, mentolabial fold, pogonion, and gonion. These points mirror clinical cephalometric analysis.

Angle Calculation & Comparison

Key angles are computed from landmark coordinates and compared against published orthodontic reference ranges. Results indicate where your measurements fall relative to typical adult populations.

Capturing an Accurate Profile Photo

Essential Requirements

✓True 90° profile: Only one eye should be visible. Your nose tip should completely clear your cheek.
✓Camera at ear height: Position the camera level with your ear, at least arm's length away.
✓Neutral expression: Keep lips relaxed and closed. No smiling, pursing, or tension.
✓Hair off forehead: Pull hair back to reveal your complete forehead and hairline.
✓Plain background: Use a contrasting solid background for accurate silhouette detection.

Common Mistakes to Avoid

✗Three-quarter turn: If both eyes are visible, you haven't turned far enough.
✗Camera too high or low: Tilted angles distort jaw and nose measurements.
✗Wearing glasses: Frames obscure nasal landmarks and distort the bridge line.
✗Too close to camera: Lens distortion exaggerates nose size and chin projection.
✗Cluttered background: Busy patterns confuse edge detection algorithms.

Understanding Your Results: Clinical vs. Aesthetic Perspectives

What Reference Ranges Actually Mean

The reference ranges provided come from orthodontic and maxillofacial surgery literature based on adult population studies. These ranges describe what is statistically common, not what is aesthetically ideal or medically necessary.

Measurements outside reference ranges do not indicate a problem requiring treatment. They simply show where you differ from average population norms. Many striking and attractive faces exhibit measurements well outside these ranges.

Clinical intervention is typically considered only when measurements correlate with functional issues (breathing difficulty, TMJ problems, malocclusion affecting eating) or when the individual expresses concern about their appearance.

The Limitations of Profile Analysis

Photo-based measurement is not equivalent to clinical cephalometry. Medical cephalometric analysis uses standardized X-rays to measure skeletal (bony) landmarks at fixed distances. Our tool measures soft tissue from photos, which introduces variables: camera-subject distance, lens type, head position, and facial expression all affect results.

Profile attractiveness is culturally variable. Studies show that preferred facial convexity, nose projection, and lip position vary significantly across ethnic backgrounds and geographic regions. What reads as balanced in one cultural context may appear unusual in another.

The side view is incomplete. Profile analysis captures only sagittal (front-to-back) relationships. It reveals nothing about facial width, symmetry, or vertical proportions—all critical components of overall facial aesthetics.

Frequently Asked Questions

Can these measurements predict attractiveness?

Not reliably. Research shows weak-to-moderate correlations between individual cephalometric measurements and rated attractiveness. Facial appeal emerges from the interaction of many features simultaneously, not from isolated angles. Studies consistently show that raters prefer profiles near -2° to +2° convexity with balanced proportions, but many faces rated highly attractive fall outside these ranges. Context, grooming, expression, and overall facial harmony matter more than any single measurement.

What is a "good" gonial angle measurement?

The gonial angle (jaw angle) typically ranges from 110–130° in adults. Smaller angles (115–120° in men, 120–125° in women) create more defined, angular jawlines. Larger angles (125–130°+) produce softer, more rounded contours. Neither is objectively "better"—the aesthetic preference depends on individual features, gender presentation, and cultural context. Angles outside the 110–145° range may indicate skeletal conditions warranting clinical evaluation.

Do profile angles change with age?

Yes. Facial angles shift throughout life due to bone remodeling, soft tissue changes, and tooth movement. The gonial angle typically increases (becomes less acute) with age as bone is resorbed. The nasolabial angle often decreases as nasal tip support weakens. Chin projection may appear to increase as upper lip volume decreases. These changes are gradual and normal. Measurements taken from photos years apart should not be directly compared without accounting for natural aging.

Is there a golden ratio for facial profiles?

No validated golden ratio exists for profiles. Some practitioners reference phi (1.618:1) proportions, but peer-reviewed research shows these ratios do not fit real faces consistently and have no demonstrated correlation with perceived attractiveness. Clinical profile analysis relies on angular relationships and linear distances, not phi-based ratios. Claims about golden ratio profiles are not supported by orthodontic or aesthetic medicine literature.

Can exercises or techniques change my profile angles?

Profile angles reflect skeletal bone structure and cannot be meaningfully changed through exercises, tongue positioning (mewing), or facial massage in adults with mature skeletons (typically 18+ years). While orthodontic growth modification can influence jaw development in children and adolescents, no peer-reviewed evidence supports non-orthodontic methods for changing facial bone position in adults. Significant profile changes require orthodontic treatment, orthognathic surgery, or rhinoplasty performed by qualified medical professionals.

Should I consider surgery based on these results?

This tool provides informational analysis only and should never be the sole basis for treatment decisions. If you have functional concerns (breathing difficulty, jaw pain, chewing problems) or aesthetic concerns, consult with a qualified orthodontist or maxillofacial surgeon. They will conduct comprehensive clinical evaluation including X-rays, dental occlusion assessment, and functional testing. Surgical intervention is appropriate only when benefits clearly outweigh risks and align with your personal goals.

Privacy & Medical Disclaimer

Complete Local Processing: Your profile photos are analyzed entirely in your browser using client-side computer vision. Images are never uploaded to external servers, stored in databases, or transmitted over the internet. All facial data remains private on your device.

Not Medical Advice: This analysis is an educational tool for understanding facial geometry concepts from orthodontics and aesthetic medicine. It does not constitute medical diagnosis, treatment recommendation, or clinical cephalometric analysis. Photo-based measurements lack the precision and standardization of clinical X-ray cephalometry. Results should not be used to make medical decisions. For evaluation of functional or aesthetic concerns, consult qualified healthcare professionals (orthodontist, oral surgeon, or plastic surgeon) who can perform comprehensive clinical assessment.

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