Facial landmark analysis · Runs in your browser

Face Symmetry Test: Free Online Facial Symmetry Analyzer

This face symmetry checker uses facial landmark detection to compare the left and right sides of your face and give a face symmetry score, region by region. Upload a photo or use your camera, then save the result as a card or PDF.

478 facial landmarks
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Face Symmetry Analyzer: Check Your Facial Symmetry

This is an automated facial landmark analysis tool. It finds 478 landmarks in your image and compares the left and right sides of the face. Results depend on image quality, lighting, camera angle, facial position and detection quality. It is not a medical, diagnostic or attractiveness assessment.

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Choose input

Best results: a front-facing photo, even light, neutral expression, whole face in frame. JPG, PNG or WEBP, up to 12 MB.

Manual fallback

If automatic detection is unavailable or misses your face, click 13 landmark positions yourself. Manual mode needs no external library.

Face the camera, keep a neutral expression and hold still. Use Freeze Frame to save the current result.

Landmarks Midline Grid

Detection

How reliably the 478 landmarks were found in this image. Marker colors on the photo show which side of the face each point belongs to.

Person’s right side
Person’s left side
Center axis points

Measurements

Each facial region is scored 0–100 from the left-right difference of its landmarks, measured as a share of face width.

Left and right comparison. Values are % of face width; vertical position is measured down from the forehead point.
Landmark pair	Right	Left	Diff.

Raw landmark measurements

Symmetry result

Overall score: the weighted average of the five region scores, rounded to a whole number. It is an image-based estimate, and it can change between photos because pose, expression and lighting move the landmarks.

Interpretation

Your saved card and PDF show your photo, score and breakdown, branded with OvalFaceShape.com and its founder, Muhammad Rehan Iqbal. They are created in your browser and are not uploaded.

Privacy: images and camera frames are processed in your browser and are not uploaded by this tool. Your browser downloads the detection library and model files from public CDNs (jsDelivr and Google Storage) when the tool first runs.

Quick answers about the face symmetry test

What is a face symmetry test?

A face symmetry test compares corresponding facial landmarks on the left and right sides of the face to estimate geometric symmetry. The result is an image-based estimate for information only, not a medical or beauty rating.

How does a facial symmetry test work?

It detects facial landmarks, establishes a facial reference axis, compares corresponding points, and calculates measurable differences between both sides.

What are facial landmarks?

Facial landmarks are detectable reference points on the face used to identify and measure features such as the eyes, nose, mouth, jaw, and facial contour. This tool detects 478 of them: 468 face-mesh points plus 10 iris points.^[2][3]

Is perfect facial symmetry normal?

No. Small differences between the two sides of the face are common and are considered normal human variation.^[4]

Not sure which shape your face is? Try our Face Shape Detector.

What is facial symmetry?

Facial symmetry is the degree to which corresponding features on the left and right sides of the face align around a central facial axis.

In a perfectly symmetrical face, the left half would be an exact mirror image of the right half. Real faces are not like that. Perfect facial symmetry is uncommon, and natural facial asymmetry is normal human variation.^[4]

Differences can occur around the eyes, eyebrows, nose, lips, cheeks, jaw and chin.
A facial symmetry test evaluates geometric differences between detected facial landmarks. It does not judge a face.
A symmetry score is not a medical diagnosis.
Symmetry is not a direct measurement of attractiveness or personal value. Research links symmetry with perceived attractiveness only as one cue among many.^[5][6]

Your face shape also affects how your features are arranged, so pair this test with our guide to the types of face shapes.

How the face symmetry test works

1DetectA facial landmark detection model finds 478 points on the face: 468 face-mesh points plus 10 iris points.^[2][3] If the detection looks unreliable, no score is shown.
2Set the axisA reference axis runs from forehead to chin. The face is rotated so this axis is vertical, removing head tilt.
3CompareMatching left and right points are compared as a share of face width, the way anthropometric studies express facial proportions.^[1]
4ScoreEach difference becomes 0–100, then a weighted average gives the overall face symmetry score.

How facial symmetry is analyzed: diagrams

These illustrations use a simplified, generic face drawing. They are not a photo or a real person, and the positions are schematic.

1. Facial centerline. A reference axis runs from the forehead landmark (point 10) to the chin landmark (point 152). It divides the face into the person’s right and left sides. Because the axis follows the face, head tilt is straightened before comparing.

2. Landmark comparison. Matching landmarks are paired across the axis: outer eye corners, eyebrow peaks, mouth corners, cheek edges and jaw corners. Each pair is compared by its distance from the axis and its vertical position.

3. Facial regions. 1 eyebrows, 2 eyes, 3 nose, 4 mouth, 5 cheeks, 6 jaw, 7 chin. The score uses five groups: eyes, eyebrows, nose, mouth, and the facial contour (cheeks and jaw).

4. Symmetry and natural asymmetry. Left: an idealized mirror-image face, where the eyes and mouth corners sit on the same guide lines. Right: a typical natural face, where one eye and eyebrow sit slightly higher or lower and the mouth is slightly tilted. Small differences like these are common.

What the test measures and how the score is calculated

Eyes (25%)Corner height difference, iris-center height difference and distance from the midline. Tolerance 5% of face width.
Eyebrows (15%)Peak height difference. Tolerance 6%.
Nose (15%)Tip offset from the midline. Tolerance 6%.
Mouth (20%)Center offset and corner height difference. Tolerance 5%.
Contour (25%)Cheek and jaw distance from the midline. Tolerance 8%.

The calculation

Face width (W) is the distance between the two cheek landmarks (234 and 454) across the straightened face. Every difference is divided by W, so image size and camera distance do not change the result.

difference = |left value − right value| ÷ W

measurement score = 100 × (1 − difference ÷ tolerance), minimum 0

overall score = sum of (region score × weight), rounded

Example: an eye-corner height difference of 2% of face width, against a 5% tolerance, scores 100 × (1 − 2 ÷ 5) = 60 for that measurement. A region with several measurements, such as the eyes, uses their average.

Tolerances and weights are design choices, not clinical norms. Landmark-based facial measurement follows the general approach described in Farkas’s Anthropometry of the Head and Face.^[1]

What the result means

Score labels used by this tool. They are descriptive, not clinical categories.
Score	Label	Meaning in this image
90–100	Very high symmetry	Landmarks line up closely around the axis.
80–89	Good symmetry	The sides align well, with small differences.
65–79	Moderate symmetry	Some regions show visible differences.
Below 65	Noticeable asymmetry	Larger differences were measured; retake the photo before drawing conclusions.

Limitations, transparency and tips

This is an automated facial landmark analysis tool. It measures geometry in one image. It does not assess health or attractiveness, and its output is not a medical diagnosis.

What can change your result

Image quality: low resolution makes landmark positions coarse.
Lighting: dark, bright or uneven light reduces detection accuracy.
Camera angle: wide-angle close-ups and a camera above or below eye level distort proportions.
Facial position: head turn, tilt and expression move landmarks.
Landmark detection quality: glasses, hair or hands over the face can mislead the detector.

When the tool will not show a score

The tool checks face size, framing, lighting, head turn and number of faces. If the image is not good enough, such as a face that is too small, cut off, too dark, turned too far, or sharing the frame with another face, you get a clear message instead of a misleading score.

Tips for a reliable result

Face the camera straight on, with your nose pointing at the lens.
Hold the camera at eye level and use even, front-facing light.
Keep a relaxed, neutral expression and pull hair off your face.
Avoid glasses and wide-angle close-ups, which distort proportions.

A large meta-analysis found only a weak link between measured facial asymmetry and health or quality.^[4] Analysis runs in your browser and photos are not uploaded by this tool; only the detection library and model files are downloaded from public CDNs.

Once you know your score, explore hairstyles for your face shape and glasses for your face shape.

Frequently asked questions

How accurate is this face symmetry checker?

It measures the landmark positions it detects, so it is only as reliable as the photo and the detection. Straight, evenly lit, neutral-expression photos work best, and the detection-quality indicator shows how reliable each result is. Scores are rounded to whole numbers and are estimates, not precise measurements.

Why does my score change between photos?

Pose, expression and lighting move the detected landmarks. The same uploaded image always gives the same result.

Is my photo uploaded?

Not by this tool. Processing happens in your browser.

Does a lower score mean something is wrong?

No. Natural left-right differences are normal in every face, and this is not a medical assessment.^[4]

Is facial symmetry related to attractiveness or health?

Studies link symmetry to perceived attractiveness, but it is one factor among many, and the link between measured asymmetry and health is weak.^[4][5][6]

Can I save my result?

Yes. After analysis, choose Save Result Card (PNG) or Download PDF. Both include the OvalFaceShape.com name and founder credit and are created in your browser.

Sources and further reading

Farkas LG (ed.). Anthropometry of the Head and Face, 2nd ed. Raven Press, 1994. WorldCat record
Kartynnik Y, Ablavatski A, Grishchenko I, Grundmann M. Real-time Facial Surface Geometry from Monocular Video on Mobile GPUs. CVPR Workshop on Computer Vision for Augmented and Virtual Reality, 2019. arXiv:1907.06724
Google AI Edge. MediaPipe Face Landmarker guide. Official documentation for the landmark model this tool uses. ai.google.dev
Van Dongen S, Gangestad SW. Human fluctuating asymmetry in relation to health and quality: a meta-analysis. Evolution and Human Behavior, 2011;32(6):380–398. doi:10.1016/j.evolhumbehav.2011.03.002
Rhodes G. The evolutionary psychology of facial beauty. Annual Review of Psychology, 2006;57:199–226. doi:10.1146/annurev.psych.57.102904.190208
Little AC, Jones BC, DeBruine LM. Facial attractiveness: evolutionary based research. Philosophical Transactions of the Royal Society B, 2011;366(1571):1638–1659. doi:10.1098/rstb.2010.0404

Sources support the background statements on this page. The scoring tolerances, weights and quality thresholds are this tool’s own design choices and are not taken from these publications.

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Muhammad Rehan Iqbal (Rehan Mir)

Founder and Developer, OvalFaceShape.com

Muhammad Rehan Iqbal, professionally known as Rehan Mir, is the founder and developer of OvalFaceShape.com. He researches face shapes, facial proportions, hairstyles, glasses, grooming, and face-analysis tools to create clear, practical, and trustworthy guidance.

Questions or feedback about this tool? Contact us.