EXAMPLE
- Canthal tiltouter corners sit above the inner
- +6.0°
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Canthal Tilt
Canthal tilt is the angle of the line from the inner to the outer corner of the eye, positive when the outer corner sits above the inner one. This tool measures it from 478 points on your photo, in your browser, and shows it to the nearest 0.5°.
Measuring on this device.
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- IPhoto opened on this device
- IIFace model loading
- III478 points placed
- IVCanthal tilt, jaw angle, facial thirds
No upload at any step. Close this tab and your photo is gone.
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One more photo.
Straight on, in good light, one face.
- Turned too far.Face the camera straight on; we read within 5° of straight.
- No face found.Try brighter light and fill the frame with your face.
- Two faces.One face per photo.
- Too small.Come closer or crop in: the face needs to be at least 160 px wide, cheekbone to cheekbone.
Light, camera height and expression can move this score by about a point from one photo to the next.
- Rising
- Balanced
- Sculpted
- Striking
- Jaw angle
- Facial thirds
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How canthal tilt is measured from a photo
- A face model in your browser marks the inner and the outer corner of each eye, among 478 points on your face.
- Each pair of corners gives a line. Its angle is read with the face levelled on the cheekbones, so a tilted head does not count as tilted eyes.
- The tilt is positive when the outer corner sits above the inner one and negative when it sits below. The result is the mean of both eyes, shown to the nearest 0.5°.
Choose a photo of one face looking straight at the camera, within 5° of straight. Another photo of the same face can give a slightly different angle.
Example: canthal tilt on a face
A generated face, not a real person: dashed lines are level, solid lines run from the inner to the outer corner of each eye. The tag shows +6.0°, read as the mean of both eyes.
How the sign reads
| Sign | Tilt shown | What the line does |
|---|---|---|
| Positive | +0.5° or more | The outer corner sits above the inner corner |
| Level | Between −0.5° and +0.5° | The two corners are about level |
| Negative | −0.5° or less | The outer corner sits below the inner corner |
Questions and answers
What is canthal tilt?
Canthal tilt is the angle of the line that joins the inner corner of the eye (medial canthus) to the outer corner (lateral canthus), measured against a level line. When the outer corner is higher, the tilt is positive; when it is lower, it is negative.
What is a positive vs negative canthal tilt?
Positive means the outer corner sits higher than the inner corner. A paper in a Korean journal describes a negative tilt as the lateral canthus lying lower than the medial canthus (Synapse), and a 2019 paper on dynamic canthopexy notes the lateral canthus normally sits about 2 to 3 millimetres above the medial one (PDF). Sign conventions are not the same everywhere, so check which one a source uses.
What is a normal canthal tilt in degrees?
We found no general normal range that can be sourced, so this page gives none. What exists are sample averages. A study of young Korean adults reports a mean of 8.45° (right) and 8.42° (left), with a spread of about 3.5° to 3.8° (Synapse), and a Korean reference cited elsewhere gives 7.9° for men and 8.8° for women (PMC). These are averages of one population, measured by clinical methods, so they do not set a limit and are not directly comparable to a tilt read from a photo.
How do I measure my canthal tilt from a photo?
Choose a photo of your face looking straight at the camera and this page does it for you: it finds the inner and outer corner of each eye, takes the angle of each line with the face levelled on the cheekbones, and shows the mean of both eyes to the nearest 0.5°. The angle is positive when the outer corner sits above the inner one. A head tilted or turned in the photo, a different lens or a smile can change the result a little.
Does my canthal tilt change from photo to photo?
A little. When we read the same image after shrinking, darkening, brightening, blurring or compressing it, the tilt moved by about 0.4° (standard deviation). Across different studio portraits of the same person, after the face was turned to front-on, it moved by about 0.6°. Selfies vary more, because light, lens and expression vary more.
Can negative canthal tilt be changed?
The medical literature describes surgical techniques that change the position of the outer corner of the eye, such as lateral canthoplasty (2016) and dynamic canthopexy (2019). Those papers are about clinical cases and are not a recommendation, and this page gives no advice on it. If you are thinking about it, talk to a doctor.