Free photo-based canthal tilt analyzer. Estimates the angle between each eye's inner and outer corners, compares both sides, and draws the measured lines directly on your photo.
Canthal tilt is the angle of the line connecting the inner corner of your eye to the outer corner. A positive canthal tilt means the outer corner sits higher than the inner corner, a negative tilt means it sits lower, and a neutral tilt means the two corners are roughly level. The angle varies naturally between people - and often between a person's own two eyes - so no single value is "correct."
For a reliable result: keep the lens at eye level, your chin neutral, and both sides of your face equally visible.
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Canthal tilt is the angle of the line connecting the inner corner of your eye (medial canthus) to the outer corner (lateral canthus), measured against a face-horizontal reference. When the outer corner sits higher, the tilt is positive; when it sits lower, the tilt is negative; when the two corners are level, the tilt is near zero.
The angle varies across individuals and populations, and published studies do not establish one universal normal or ideal value. This calculator estimates each eye separately from a straight-on 2D photo, then draws the selected corner points and fitted reference on the image so you can inspect what was measured.
The three configurations differ only in which eye corner sits higher - but they read very differently on a face:
Positive tilt
Outer corner above inner corner (above 0°). This is an upturned eye-corner line and one component of what online communities sometimes call "hunter eyes." Tilt alone does not define the full eye shape.
Neutral tilt
Corners level or only slightly offset in the photo. Because a 2D estimate changes with camera height and head pitch, values close to a boundary should be checked with another suitable photo.
Negative tilt
Outer corner below inner corner (below 0°). Often called downturned or "puppy eyes" in informal shape language. It is a geometric description, not a personality or beauty rating.
No. Negative canthal tilt can be normal anatomical variation, not a flaw. A 2023 review found that positive tilt was generally preferred in the included female-focused aesthetics literature, but it also found debate over the preferred degree and meaningful variation between studied populations. A 2025 image-manipulation study found that further lateral-canthus elevation reduced several ratings in its specific stimulus set. Neither result supports turning one angle into a universal verdict.
Online communities sometimes treat negative tilt as a defect that needs surgical correction. That framing isn't supported by the aesthetics literature, and canthoplasty is a real surgical procedure with real risks - not something to consider because of a number on a screen. If a strongly negative tilt appeared recently or is asymmetric, that can occasionally reflect age-related laxity or an eyelid condition, which is a question for an ophthalmologist, not a calculator.
The canthal tilt is reported in degrees. Positive numbers mean the outer canthus appears above the inner canthus; negative numbers mean it appears below. These bands describe the measured slope and align with the calculator's categories. They are not population percentiles, diagnoses, or attractiveness rankings:
+8° and above - Strongly upturned
The outer corners sit clearly higher than the inner corners in this photo. Higher positive values are a geometric description, not a better score.
+4° to below +8° - Upturned
The eye-corner line slopes upward toward the temple. This is one feature people may mean by positive canthal tilt or the informal 'hunter eyes' label.
+2° to below +4° - Slightly upturned
A smaller upward slope is visible in the measured eye-corner line. Camera height and head pitch can move a photo estimate by a degree or more.
0° to below +2° - Approximately level
The outer corners are level with or only slightly above the inner corners in the fitted face-horizontal reference.
-3° to below 0° - Slightly downturned
The outer corners sit slightly below the inner corners. This is a common type of anatomical variation, not a defect or diagnosis.
Below -3° - Downturned
The measured line slopes downward toward the temple. A recent or one-sided eyelid change belongs with an eye-care professional, not an online calculator.
Canthal tilt is one visible part of eye-area geometry. Research shows that changing canthal position can affect ratings in controlled images, but the direction and preferred degree depend on the image, population, and study design. Eyelid exposure, brow position, expression, lighting, and the rest of the face remain part of what a viewer sees.
In looksmaxxing communities, the eye-corner angle is also folded into a whole-face PSL rating - where tilt is one small component among symmetry and overall proportions, not a score on its own.
What positive tilt describes
What level / negative tilt describes
A 478-point face detector supplies four canthus landmarks - the inner and outer corners of both eyes - plus five points used to fit the face midline. The calculator constructs a perpendicular face-horizontal axis, projects each inner→outer corner line against it, and reports:
The same decoded photo and detector output return the same numbers; no language model assigns the angle. Roll is normalized by the fitted face axis, while pitch and yaw remain important 2D limitations. The tool withholds a result beyond its pose limits instead of presenting a pose-driven category.
Straight-on face, level camera
The fitted face axis compensates for image roll, but turning your face or placing the camera above or below eye level changes the 2D projection. Keep both ears similarly visible and the lens at eye height.
Keep your chin neutral
Looking down makes positive tilt appear stronger; looking up flattens or reverses it. The tool withholds results beyond a 5° pitch estimate, but a neutral chin produces the most repeatable photo.
Neutral, eyes-open expression
Smiling, squinting, or opening one eye more than the other can move the corner landmarks. Relax your face and look directly at the lens.
Clear eye corners
Keep hair, heavy shadows, and eyewear away from both inner and outer eye corners so the face-mesh detector can place the four measured points consistently.
Canthal tilt describes the angle of the line between the inner and outer corners of an eye. Positive means the outer corner is higher, negative means it is lower, and a value near zero is approximately level. It is a geometric eye-shape measurement, not an attractiveness or health verdict.
A positive canthal tilt means the outer corner is higher than the inner corner in a straight-on view. Online communities often connect positive tilt with 'hunter eyes,' but that informal label also refers to eyelid exposure, brow position, and orbital depth. A positive angle alone does not determine the full eye shape.
A negative canthal tilt means the outer corner is lower than the inner corner, producing a downturned eye-corner line. It can be normal lifelong anatomy. If eyelid position changed recently, differs suddenly between sides, or affects comfort or vision, consult an optometrist or ophthalmologist rather than relying on a photo tool.
This tool detects 478 face-mesh points, selects the inner and outer corner of each eye, and fits a face midline from five additional points. It projects each eye-corner line against the perpendicular face-horizontal axis, which compensates for image roll. It then reports left, right, average, and the difference between sides. The result is still a 2D photo estimate and is sensitive to camera height and head pitch.
There is no universal perfect angle. Published studies use different populations, images, definitions, and rating tasks, and reported averages vary by sex and population. Some research associates positive inclination with particular ratings, while newer image-manipulation research found that further lateral-canthus elevation reduced several ratings. Treat the number as a description of your photo, not a target.
Makeup, lashes, and brow styling can change how the eye area appears without moving the canthus. Exercises and mewing have not been shown to relocate adult canthal attachments. Canthopexy and canthoplasty are real oculoplastic operations with functional and cosmetic risks; questions about them belong with a qualified oculoplastic surgeon after an in-person examination.
Small differences can reflect anatomy, landmark-estimation noise, expression, yaw, pitch, or camera perspective. The calculator suppresses results beyond its pose limits, but a well-lit, eye-level, straight-on photo with a neutral expression is still essential. Repeat with another suitable photo before interpreting a small difference.
Canthal tilt is one measurable component of that trend, not the whole definition. 'Hunter eyes' is informal looksmaxxing vocabulary that usually bundles positive tilt with low upper-lid exposure, a narrower opening, deeper-set eyes, and brow proximity. This calculator measures only the eye-corner angle and left/right difference.
Research does not identify one most attractive canthal tilt. Studies that edited faces reached different conclusions depending on the images, populations, and rating tasks used, and reviews describe the preferred degree as debated. Attractiveness ratings also depend on eyelid exposure, brows, expression, and the rest of the face, so treat any measured angle as a description rather than a ranking.
The canthal tendons stay anchored to bone, but the soft tissue that supports the outer eye area can loosen gradually over decades, which can lower how the outer corner sits in photos. Facial growth before adulthood can also shift proportions. Day-to-day photo differences are more often pose, expression, or camera height. A change that is sudden or affects only one side belongs with an eye-care professional.
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