Positive
The outer corner is more than 1° higher than the inner corner.
Canthal Tilt Test
Upload a clear, front-facing photo to measure your left, right and average eye-corner angle after correcting for head roll.
- No sign-up
- Processed in this browser
- Both eyes measured separately
Free measurement
Choose one clear photo
Drop your portrait here
Face forward with both eyes open. Keep your head level and your face unobstructed.
Your photo is not uploaded during this free measurement.
Your measured eye-corner direction
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Positive means the outer corner is higher than the inner corner. The ±1° neutral band is a product tolerance, not a medical or attractiveness standard.
1Locate four eye-corner landmarks
2Correct the photo's eye-line roll
3Measure both eyes and the average
What is canthal tilt?
Canthal tilt is the angle from the inner corner of an eye to its outer corner. Face Atlas reports the subject's anatomical left and right eyes separately, then calculates their average.
Neutral
The measured average sits from −1° through +1°.
Negative
The outer corner is more than 1° lower than the inner corner.
Photo-specific
Expression, eyelid position and camera angle can change the visible result.
Not a diagnosis
The measurement does not determine health, identity or attractiveness.
Photo conditions affect the angle
A front-facing image with both eyes open gives the clearest comparison. The tool withholds the result when it cannot measure the required eye geometry reliably.
What is a positive canthal tilt?
The outer eye corner appears higher than the inner eye corner after the tool corrects the photo's eye-line angle.
Why are the left and right values different?
Natural differences between the eyes can contribute. Expression, eyelid position and camera perspective can also shift either visible eye line.
Does head tilt change the answer?
The engine corrects roll using the line between the eye centers. It rejects a strongly turned or tilted head because that view cannot support a reliable estimate.
Does canthal tilt measure attractiveness?
No. Canthal tilt is a geometric angle from one photograph. It does not assess attractiveness or health.