Facial Symmetry Test
Measure how closely the left and right sides of your face match — across ten paired landmarks, in your browser. Your photo is never uploaded, and no account is needed.
You get a symmetry reading, the number behind it, which pair differs most, and an explanation of how your photo can affect the result. A single photo cannot separate camera effects from anatomy.
Choose or drop one photo here
JPG, PNG or WebP · Up to 10 MB / 20 megapixels
Free result in ~5 seconds · Photo stays on your device
Choose a photo to begin.
Read the formula
Four experimental geometry components. Each is clamped to 0–1; these references are product choices, not population percentiles.
We do not measure objective beauty, skin quality, age, color season or anatomical hairline thirds. Contour angles are not bone angles. Photo perspective and model error affect measurements.
Formula shown → How it worksYour result
Symmetry is not a beauty rating. Every face is asymmetric to some degree, and a mirror image is not the goal — no face is perfectly mirrored, and none needs to be.
The reading behind your score
| What we measure | Your value | Reference | Direction |
|---|---|---|---|
| Left–right match (average across ten paired landmarks) | — | smaller is a closer match | matches less ← → matches more |
| Largest single pair difference | — | — | — |
| Vertical alignment (mouth line after eye-line alignment) | — | near 0° | tilted ← → level |
This combines ten selected point pairs. It is not a separate score for each eye, eyebrow, nose or lip.
The reference positions above are our product settings. They are not a clinical threshold, and asymmetry within them is normal.
Where left-right differences come from
This is the most useful part of this page. In a single photo, a left-right difference can come from five places — and only one of them is your face:
- Head rotation (most common). Turn your head even slightly and one side comes closer to the camera. That side measures wider. This is the single largest source of "asymmetry" in phone photos.
- Camera position. A phone held slightly off-centre, or tilted, shifts the whole measurement.
- Lighting. Hard light from one side casts shadow that changes where the landmarks land — especially the eye and mouth corners.
- Expression. A raised eyebrow, a small smile or a clenched jaw are all asymmetric, and all temporary.
- Your actual anatomy. What is left after the four above is your face. It is usually smaller than people expect.
Because of this, we show you the number and the largest differing pair rather than a verdict. If you re-run with a straight-on, evenly lit photo, the reading usually moves — and that movement is the photo, not your face.
Can you change it?
Mostly not, and mostly you don't need to. Left-right differences in bone structure are normal and are not a defect. What you can control:
- How the photo is taken — straight on, even light, neutral expression. This is the biggest lever, and it is free.
- Grooming that balances lines — brow shape, hair parting, fringe direction. These change how the two sides read in a photo without changing your face.
- Chewing and sleeping habits — the evidence here is weak and slow-acting. We list it because people ask; we do not recommend chasing it.
Frequently asked questions
Is my face symmetric?
Almost certainly not perfectly, and that is normal. Every face has some left-right difference. This test tells you how large yours is across ten paired landmarks, and which pair differs most — not whether you pass or fail.
What is a good symmetry score?
There is no universal number. We show a reference position based on our own product settings, and the direction of your reading. A smaller average difference means a closer left-right match — it does not mean a better face.
Why does my face look asymmetric in photos but not in the mirror?
Because a photo is one fixed instant from one fixed angle, and your mirror image is not. Phone photos add lens distortion and head rotation, both of which exaggerate left-right differences. Most people's photos read less symmetric than their faces.
Can facial asymmetry be fixed?
Changes people ask about most — a slightly different photo angle, even lighting, brow shaping, a different parting — are the ones that actually move this reading. We do not recommend procedures, and we do not offer treatment advice.
Is this facial symmetry test free?
Yes. The test, your symmetry reading and the largest differing pair are free with no account. Paid reports and PDF delivery are not available yet.
Is my photo uploaded?
No. The measurement runs in your browser and the photo never leaves your device.