Face symmetry test
Compare both sides of one photo. Inspect twelve paired landmarks, see which features drive the score, and view two mirrored half-faces.
Measure facial balance from a photo
Choose a clear, straight-on portrait. The free measurement and photo comparisons run on your device; you can inspect the result before considering a full report.
Meet your face, in a new way.
Drop a photo here or choose a portrait from your device.
JPG, PNG, WebP or HEIC/HEIF · up to 30 MB · at least 320 × 320 pxA good photo makes the difference
- Look straight at the camera, with your head level.
- Use even daylight, without strong side shadows.
- Keep your face visible. Remove glasses and avoid filters.
- Use a recent photo with just one face and a neutral expression.
Measurements describe this photo. Camera distance, expression and lighting can change the result. They are not a medical assessment or a measure of your worth.
Your photo is prepared locally as JPEG, and the free scan runs in this browser. The scanner loads its engine from this site; your photo is not sent to us or any third party. A complete report uploads the same prepared photo only after your separate consent.
- We store
- If you are signed in, a usage count: which tool and step, never results or measurements.
- We never store
- Your photo, face points or results; the scan runs in this browser.
- How long
- The photo is cleared when you leave the page. Numbers you choose to save stay in this browser until you clear them. Privacy policy
Free measurements and comparison images stay in this browser. No account is needed. The optional report has its own upload permission and checkout.
What is a face symmetry test?
A face symmetry test reflects one side of your face across a fitted centre line and measures how far each point lands from its partner. This face symmetry test keeps the points visible, so every number comes with something you can check on the photo.
A facial symmetry test from one photo
A camera sees both sides equally only when you face it squarely. A head turn, uneven expression, shadow or hair over one cheek can move a landmark, so the result describes this photo, not your face for all time.
See your unflipped face in the true mirrorHow the face symmetry checker scores you
The face symmetry checker groups twelve landmark pairs into eyes, brows, nose, mouth and jaw, scores each group from 0 to 100, then weights them into one index. The formula is listed below.
Compare with the golden ratioThe twelve pairs form five groups: four eyes, three brows, one nose, one mouth and three jaw/outline. Their total weights are 25%, 15%, 10%, 15% and 35% respectively. Pair counts determine each group’s observations; the disclosed group weights determine its contribution to the total.
Four pairs compare the inner and outer eye corners and one upper and lower lid position. These points can reveal both horizontal and vertical differences. Look at the outlined positions first: squinting or raising one cheek changes the opening even when the camera is well placed.
Three pairs sample the inner, middle and outer brow outline. They describe detected positions, not hair density or a suggested grooming shape. Keep the forehead relaxed: raising one brow changes these points even with a well-positioned camera.
One pair compares the two detected nose-side points, 129 and 358. Its residual is normalized by those points’ own distances to the midline. A front photo cannot establish internal structure, breathing function or a three-dimensional nasal deviation.
One pair compares the two mouth corners, 61 and 291. A half-smile, pursed lips or a talking frame can change this reading. Use a relaxed expression for a repeatable comparison; the result does not analyze lip fullness or diagnose a bite.
Three pairs sample the upper outer face, cheek span and lower jaw contour. Hair, soft tissue and perspective affect this visible boundary. This group carries 35% of the total under the face symmetry test's disclosed rule; it is not a jaw-bone measurement or a bite assessment.
Why use our face symmetry test?
It shows where your two sides differ and by how much, instead of a single unexplained number.
A free face symmetry test online, with no upload
Landmarks are found in your browser and the free result never leaves your device. No account is needed; only the optional paid report has its own upload consent.
How we handle photosCheck face symmetry with mirrored half-faces
Switch between your original photo and two composites built from the left or right half. They make small differences easy to see, but they are illustrations, not a prediction of a different face.
Find your face shapeA doubled-half picture copies one detected side across the same fitted centre line. It creates a comparison image; it does not reveal a hidden, corrected or future version of a person. The two versions may differ in cheek width, brow placement or expression because each repeats a different set of details.
The fitted line can be offset or tilted when your face is not centred in the photograph. Both composites follow that line. Areas reflected beyond the original photo boundary can be blank, so keep your full head and some background in frame. The blank area contains no invented pixels.
A face in motion has many expressions that one frame cannot represent. Repeating a half also repeats that moment's lighting and expression. View both comparisons together with the original, and avoid treating either one as a preferable target. For a more specific shape question, use the separate face-shape tool.
How to use it in 3 steps
Set up a straight-on portrait
Hold the camera at eye level, face it squarely, relax your expression and use even light with both cheek edges visible. Upload a photo, use your camera or try the labelled sample.
Line up your pose in the online mirrorCheck the points before the score
Run the analysis and pick a feature group to see its landmarks. If a point sits on hair, retake the photo. A head-turn warning withholds scores rather than calling your face asymmetric.
Measure your eye tiltCompare face symmetry views and save a copy
Switch between the three views, hide the lines if you like, and save the PNG. When you repeat the test, match light, distance and expression.
Check other facial ratios
After the face symmetry test, explore another measured feature: Compare your face shape · Measure eye-corner tilt
In this face symmetry test, the detector supplies 478 facial landmarks. We convert the horizontal and vertical coordinates into pixels before measuring, because they use different image dimensions. Five central points define a fitted line running from forehead to chin. The reflection is made about that line, including its position and tilt, rather than the middle of the canvas.
Point list and formula
The fitting points are 10, 151, 6, 2 and 152. Pairs below are anatomical right ↔ left in an unmirrored front photo. Reflect a point across the fitted axis and measure the gap c to its partner. Let h be the mean absolute axis distance of the two original points. Pair deviation is 100c/h percent; when h is zero, equal points give zero and a nonzero gap gives 100%. Map each pair through its group’s reference curve, average without rounding within groups, then apply the group weights. Only the final group displays and total are rounded. E, B, N, M and J denote eyes, brows, nose, mouth and jaw.
- Eyes:
33 ↔ 263 · 133 ↔ 362 · 159 ↔ 386 · 145 ↔ 374 - Brows:
107 ↔ 336 · 105 ↔ 334 · 70 ↔ 300 - Nose:
129 ↔ 358 - Mouth:
61 ↔ 291 - Jaw and outline:
127 ↔ 356 · 234 ↔ 454 · 172 ↔ 397
Deviation% = 100c/h. Index = clamp(round(0.25E + 0.15B + 0.10N + 0.15M + 0.35J), 0, 100).A four-point reference uses the two cheek points, forehead and chin. The cheek depth difference and horizontal span define a yaw reference, rounded to 0.1°. This face symmetry test withholds scores when an available yaw exceeds ±2°; missing alignment is accepted, so no yaw screen is applied in that case. The ordinary image and finite-landmark checks still apply. Neither a passed screen nor an absent reference establishes clinical accuracy or removes perspective distortion.
Face symmetry test FAQ
How to fix face symmetry naturally at home?
Bone structure sets most of your symmetry. Even lighting, a straight-on pose, a balanced hairstyle and posture habits change how symmetric you look in photos far more than exercises do.
What is face symmetry?
Face symmetry describes how closely the left and right halves of a face mirror each other. Almost no face is perfectly symmetric, and small differences are normal.
Does sleeping on your back help face symmetry?
There is little evidence that sleeping position changes bone symmetry. Pressure from side sleeping can cause temporary puffiness, so morning photos may look less even.
How to check face symmetry?
Take a straight-on photo and run this face symmetry test. It reflects one side across a fitted centre line and shows each landmark pair, a group score and mirrored views.
What is a good face symmetry score?
There is no medical cut-off. Higher means the twelve pairs line up more closely in this photo. Compare scores only between photos taken in similar conditions.
Is facial symmetry attractive?
Studies link symmetry with attractiveness, but the effect is modest and charm, expression and styling matter more. This face symmetry test does not rate beauty.
Can braces fix face symmetry?
Orthodontic treatment can change jaw and lip position, which may affect how balanced the lower face looks. Only an orthodontist can say what is possible for you.
Can face symmetry change?
Yes, gradually. Growth, ageing, weight change, dental work and injury can all shift it, which is why results from different years can differ.
Can Botox help face symmetry?
Injectables and surgery are medical procedures with risks. Discuss them with a licensed clinician; this tool does not recommend treatments.
Is face symmetry genetic?
Partly. Genes shape the underlying structure, while development, habits and life events add small differences between the two sides.
Is a face symmetry checker accurate?
It is as accurate as the photo allows. Landmarks are estimated from one 2D image, so pose, lens and lighting add error. Use the visible points to judge each result.
Can I do a face symmetry test with my camera?
Yes. Take one still photo with your camera and it is analysed like an upload. The tool does not track live video.
What do the mirrored half-faces show?
Each composite repeats one half of your face on both sides. Comparing them shows which features differ, but neither is a truer version of you.
Can a face symmetry test detect a stroke or Bell's palsy?
No. Sudden facial drooping is a medical emergency; call emergency services right away. This face symmetry test is a styling tool, not a diagnosis.
Is this face symmetry test free?
Yes. The scan, scores, mirrored views and PNG download are free; only the optional full face report is paid.
How is face symmetry different from the golden ratio?
Symmetry compares your left and right sides. The golden ratio compares lengths and widths with 1.618. They measure different things, so try both tools.
Does the face symmetry test upload my photo?
No. Landmark detection runs in your browser and the free result stays on your device. A paid report asks for separate consent before any upload.
Why does my symmetry score change between photos?
Small changes in head turn, tilt, expression, lens distance and light move the landmarks. Scores are withheld when the head turns more than about 2°.