Free face symmetry test from a photo
Last updated: September 2026
How symmetrical is my face? Upload one front-facing selfie and the test compares sixteen mirrored landmark pairs across the midline of your face, in your browser, and gives you a symmetry score out of 100, the average left to right difference as a share of face width, and the regions that differ most. You see the midline and every landmark drawn on your photo. Free, no signup, nothing uploaded.
How the symmetry score is calculated
The test finds 478 landmarks, levels the head and corrects for a small turn, then draws a midline through the points that should sit on the centre of the face: the top of the forehead, between the brows, the bridge and tip of the nose, the middle of the lips and the chin. For each mirrored pair (outer eye corners, inner eye corners, upper and lower lids, brow tails, arches and heads, temples, cheek edges, jaw corners, nostrils, mouth corners, inner lips) it mirrors the left point across the midline and measures how far it lands from the right point. Bone landmarks carry more weight than soft ones.
The weighted average difference, as a share of face width, becomes the score. Under 2% is a near mirror image and rare. 2 to 3.5% is even. 3.5 to 5.5% is typical: one side sits slightly higher or wider, which is normal and which nobody notices in person. Above 5.5% is a noticeable difference, and the first thing to check is whether the photo was straight on.
What a symmetry score means
| Left to right difference | Score | Reads as |
|---|---|---|
| under 2% of face width | 85 and up | Near mirror image. Very few faces measure this even. |
| 2 to 3.5% | 75 to 85 | Even. Small differences that nobody notices in person. |
| 3.5 to 5.5% | 64 to 75 | Typical. Most faces measure here. |
| over 5.5% | under 64 | Noticeable. Retake the photo straight on before reading much into it. |
How the measurement works
The page loads a face landmark model into your browser and finds 478 points on the face: the corners and lids of the eyes, the brows, the bridge and base of the nose, the lips, the cheek edges, the jaw corners and the chin. It then levels the head, corrects for a small turn or a camera held above or below eye level, and measures distances and angles between those points. Every number is a ratio, so the size of the photo does not matter.
Nothing is uploaded. The model runs on your device, the photo stays on your device, and the result image you can save is drawn on your device. Close the page and nothing remains.
Why almost nobody is symmetrical
Faces grow from two halves that never fully match. One eye sits a little higher, one side of the jaw is a little wider, the nose tips a little left or right. Research on attractiveness finds that symmetry matters, but less than averageness and less than the dimorphic traits (jaw and brow for men, cheek and lip fullness for women), and that faces which are perfectly mirrored look uncanny rather than beautiful. A typical score is not a problem to fix; a very low score on a straight photo is worth a look at posture, chewing side and sleeping position, which shape soft tissue over years.
What lowers a symmetry score that is not your face
- A head turned even ten degrees. The test corrects small turns, but the far side of the face still compresses in the photo.
- A tilted camera. The test levels the head, but the lens distortion of a tilt remains.
- Light from one side, which shifts where the model places the landmarks on the shadowed side.
- A half smile or a raised brow. Expressions are rarely symmetrical.
- A wide lens at close range. Step back and zoom in.
See how symmetry fits into your whole rating
ChadMe rates six traits from the selfie and explains which ones are carrying the score and which are holding it back.
How to get an accurate symmetry reading
- Camera at eye level, at arm's length or further. A low camera lengthens the chin and widens the jaw; a high camera shrinks them.
- Even light from the front. A window behind you or a lamp above you puts shadows exactly where the landmarks are.
- Face the camera straight on with a neutral expression, mouth closed, hair off the forehead.
- No filters, no beauty mode, no crop that cuts the chin or the ears.
- Use the same setup when you compare two photos. Different setups produce different numbers on the same face.
FAQ
Is the face symmetry test free?
Yes. It runs in your browser from one photo with no signup and no upload.
What is a good face symmetry score?
Anything above 75 (a left to right difference under 3.5% of face width) is even. Most faces measure between 64 and 80. Scores in the nineties are rare.
Is a symmetrical face more attractive?
Somewhat. Symmetry is one of the traits that predict attractiveness ratings, but averageness and sexual dimorphism predict them more strongly, and perfectly mirrored faces look uncanny. Treat symmetry as one of several measurements, not the measurement.
Why is my symmetry score low?
Check the photo first: a turned head, a tilted camera, one-sided light or an expression lowers the score more than real asymmetry does. If a straight, neutral photo still scores low, the result table shows which region differs most.
Can I improve facial symmetry?
Bone symmetry does not change without surgery. Soft tissue symmetry responds a little to chewing on both sides, sleeping on your back and posture. Photos respond a lot to lighting and angle, which is where most of a low score comes from.
Is my photo uploaded?
No. The model runs on your device and the photo never leaves it.