Canthal Tilt Calculator — Measure Each Eye's Angle On-Device, Free
Measure your canthal tilt in seconds: upload a front-facing photo and this calculator reads each eye separately — left angle, right angle, the average, and the difference between them — entirely on your device. Community reference band: +4° to +8° positive tilt.
🔒 Free measuring runs on your device; the AI readout can optionally attach your photo — generation-only, never stored.
What canthal tilt actually measures
Canthal tilt is the angle of the line between your eye's inner corner (medial canthus, near the nose) and outer corner (lateral canthus, toward the temple):
- Positive tilt — the outer corner sits higher than the inner. The community calls strong positive tilt "fox eyes" or "cat eyes"; bundled with a narrow eye opening and low lid exposure, it is most of what "hunter eyes" refers to.
- Neutral tilt — the corners sit level (roughly 0° to +2°).
- Negative tilt — the outer corner sits lower. Informal names: "puppy eyes" or, in looksmaxxing vocabulary, "prey eyes" — the term blew up on TikTok around 2024.
The measurement itself is plain geometry: the 478-landmark model finds both eye corners, corrects for head roll using your facial midline, and reports each eye's angle in degrees. The same photo, read again, gives the same degrees — nothing here is estimated.
One honest caveat: there is no scientifically established "perfect" angle. The +4° to +8° band is a community convention, not a law. Qoves Studio's measured "attractive range" runs wider (roughly +5.7° to +10.3°), published anthropometric norms cluster in the low positive degrees, and no controlled study crowns a single ideal. Treat the band as a reference grid, not a verdict.
Reading your five numbers
| Reading | What it is | What to look for |
|---|---|---|
| Left eye tilt | Your left eye's angle in degrees | Each eye is measured independently |
| Right eye tilt | Your right eye's angle in degrees | Small differences between eyes are normal |
| Canthal tilt (average) | Both eyes averaged — the number the full engine scores | +4° to +8° is the community reference band |
| Left / right difference | The gap between your two eyes | Almost everyone has some asymmetry; a few degrees is unremarkable |
| Eye aspect (h/w) | Eye height ÷ eye width | Lower reads narrower — the "narrow opening" part of the hunter-eyes bundle |
Why show each eye separately? Because two eyes on the same face rarely agree — and a single averaged number hides that. The left/right difference is normal anatomy, not an error in your photo.
The bands, honestly
| Your reading | What it means |
|---|---|
| +8° and above | Strongly upturned — uncommon naturally; beyond a point, further elevation doesn't raise ratings |
| +4° to +8° | Community reference band |
| +2° to +4° | Slightly upturned — inside the measured "attractive range" territory |
| 0° to +2° | Approximately level — balanced, natural |
| −3° to 0° | Slightly downturned |
| Below −3° | Downturned — "prey eyes" in community vocabulary |
Two things the table cannot say: first, tilt is one input among many — it carries 15% of the weight in the full rating engine, and conventionally attractive faces exist at every band. Second, attractiveness research finds substantial subjectivity; the community bands are conventions, not measurements of worth.
See it run: the same engine, both eyes
Preparing the example study — it measures itself as you reach it…
How to take a photo the calculator can measure
The tilt line is short, so small photo flaws move it more than any other reading:
- Look straight into the lens — chin level, no head roll (the engine corrects small tilts, not big ones).
- Relax your brows and eyes — raised brows or a deliberate squint redraws the corners.
- No makeup tricks for the measurement photo — a cat-eye liner lifts the appearance of the corner; the calculator measures anatomy, not art. (By all means wear it everywhere else.)
- Take glasses off — frames obscure both corners.
- Even, front-facing light — heavy shadows blur the outer corner's position.
Related tools and guides
Measure something else:
- Attractiveness test — the full 1–10 rating, percentile and 8-metric breakdown
- Facial ratios calculator — thirds, FWHR and jaw width
- Golden ratio face calculator — your three φ ratios, measured
- Face shape detector — oval, round, square and four more
- PSL calculator — the full 8-metric calculator
Read next:
- Canthal tilt, the metric explained — the full guide: reference values, what moves the perceived tilt
- Hunter eyes — the anatomy of the ideal, honestly split
- What is PSL? — where the 0–8 scale comes from
- Looksmaxxing dictionary — fox, prey, hunter and the rest of the vocabulary
- Methodology — every reference value and weight we use
References
Farkas LG. Anthropometry of the Head and Face. 2nd ed. New York: Raven Press; 1994 — palpebral fissure inclination norms: measured eye-corner angles cluster in the low positive degrees, with systematic left/right asymmetry documented as normal.
Qoves Studio. Canthal tilt — measurement insights. qoves.com/insights/measurements/canthal-tilt — the measured "attractive range" (≈ +5.7° to +10.3°) cited above.
Rhodes G. The evolutionary psychology of facial beauty. Annual Review of Psychology. 2006;57:199–226. doi:10.1146/annurev.psych.57.102904.190208 — averageness, symmetry and dimorphism carry attractiveness; single-ratio "ideals" do not.
Measure your canthal tilt — both eyes, in seconds
One photo, on your device, no sign-up — left angle, right angle, average and difference, roll-corrected.
Run the free calculator