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478 landmarks
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Oval, round, square, heart
Face shape detector: what is my face shape?
Face shape is usually guessed from a mirror, which is unreliable because it ignores actual proportion. This free face shape test uses an AI face scan to measure jaw width, cheekbone width, forehead width and face length directly, then classifies the result.
Free basic reports require no credit card, no account, no password. Your image is never uploaded or stored. Analysis happens in your browser and your session data is cleared when you close or refresh the page.
In short
A face shape detector compares the width of your jaw, cheekbones and forehead against your total face length. Facemap takes these four measurements from 478 3D landmarks and classifies your face as oval, round, square, heart, diamond or oblong based on which proportions dominate.
- 3D landmarks
- 4783D landmarks
- Scan time
- ~20sScan time
- Uploads, runs in browser
- 0Uploads, runs in browser
- No account required
- FreeNo account required
Where it is measured
Face shape on the landmark mesh.
The overlay is drawn from the same 478 point MediaPipe landmark set Facemap uses on your own scan, so every caliper, axis and node sits on the exact anatomy the measurement is taken from.
Sample reading, Oval, round, square, heart
- Length / width
- 1.42
- Jaw / cheek
- 0.84
- Forehead / cheek
- 0.91
- Classified shape
- Oval
How the scan works
Capture
Guided front-on frame with even light, no upload.
Landmark
478 point mesh placed on your face in real time.
Report
Face shape measured, normalised and explained.
What is face shape?
A classification built from four measurements: jaw width, cheekbone width, forehead width and total face length, compared against each other to sort the face into one of six common shape categories.
How Facemap measures face shape
Facemap locates the jaw corners, widest cheekbone points, forehead width at the temple line and the vertical span from hairline to chin from the 478-point mesh, then compares the ratios between these four values to assign a shape.
What the typical range looks like
No shape is more correct than another, and the classification is descriptive rather than evaluative. Oval, round, square, heart, diamond and oblong all occur naturally and in roughly comparable frequency across populations.
How to read your result
Facemap shows the underlying measurements alongside the label, so you can see, for example, whether a square classification comes from a wide jaw, a short face length, or both, rather than treating the label as the whole story.
The face shape formula: how we calculate it
Composite of length-to-width and cheek-to-jaw taper. Landmark numbers are MediaPipe Face Landmarker indices, and every distance is normalised to your own face so camera distance and image size cancel out.
0.6 x (face height / face width) + 0.9 x (bigonial / bizygomatic)
- Landmarks used
- 10, 152, 234, 454, 172, 397
- Reference target
- 1.55, a balanced oval
- Tolerance band
- 0.30
Your reading is compared with that published reference on a Gaussian match curve: score = round( 100 x exp( -0.5 x ( (reading - target) / tolerance )^2 ) ), clamped to 1 to 99. Basis for the reference value: weighted blend chosen so oval reads highest and both very long and very square outlines fall away. The headline Attractiveness Score works differently: all readings are corrected for head angle and expression, weighted by confidence and mapped onto a 1 to 100 scale by a model calibrated against a published research set of more than Facemap scans.
Read the full Facemap methodology, including how the 22 measurement categories combine into your Attractiveness Score.
Face shape reference table
How the four measurements map to each shape.
- OvalBalanced
Cheekbones widest, length clearly exceeds width
- RoundSoft
Similar width and length, minimal jaw angle
- SquareAngular
Jaw, cheekbone and forehead widths near equal
- Heart / diamondTapered
Forehead or cheekbones wide, jaw narrows sharply
The four measurements behind your face shape
Each shape category is derived from comparing these values against each other, not from a single width.
- Jaw width, measured across the jaw corners
- Cheekbone width, the widest horizontal point on the face
- Forehead width, measured at the temple line
- Total face length, hairline to chin point
Why mirror guesses about face shape are unreliable
Lighting, hairstyle and camera angle all distort a visual guess. A slightly low camera exaggerates jaw width, and hair covering the temples hides true forehead width, which is why self-assessed face shape frequently disagrees with a measured result.
Face shape versus fWHR and gonial angle
Face shape is a categorical label built from four widths and a length, while fWHR and gonial angle are continuous measurements of specific proportions. Two faces can share a face shape label while differing meaningfully in fWHR or jaw angle, so the three tools are complementary rather than duplicates.
The face shape classification formula, step by step
Face shape is not read from a single width. The formula compares the width and length ratios below and assigns whichever category the pattern fits most closely.
- Divide jaw width by cheekbone width to check how much the jaw tapers
- Divide forehead width by cheekbone width to check how the top of the face compares
- Divide total face length by cheekbone width to check overall length versus width
- A near-equal jaw, cheekbone and forehead width with a longer length points to square or oblong
- A wide forehead or cheekbones with a narrow jaw points to heart or diamond
- Similar width and length with a soft jaw angle points to round, and a clearly longer length with tapering width points to oval
Your reading
Measure your face shape in about twenty seconds.
The scan runs in your browser. Nothing is uploaded, and free basic reports need no account.
Questions
Face shape detector: frequently asked questions
How accurate is a face shape detector?
Accuracy depends on landmark precision and a front-on capture. Facemap uses 478 3D landmarks and guides your position during the scan to keep the four widths comparable.
How many face shapes are there?
Facemap classifies into six common categories: oval, round, square, heart, diamond and oblong, based on jaw, cheekbone and forehead width against face length.
Can my face shape change over time?
The underlying bone proportions are largely stable in adulthood, though soft tissue changes with weight or age can shift jaw and cheek width slightly.
Why does my face shape result differ from what I guessed?
Self-assessment is usually done from a mirror or photo at an imperfect angle, which distorts width. A measured scan corrects for angle before comparing the four widths.
Is the face shape test free to use?
Yes. The scan runs on-device with no account required, and no image is uploaded to a server.
What is the formula behind the face shape calculator?
Jaw width, cheekbone width and forehead width are each compared against cheekbone width and against total face length. The pattern across these ratios, not any single width, decides the classification.
How does the face shape AI face scan work?
It runs on Google's MediaPipe Face Mesh, a machine learning model that places 478 3D landmarks on your face directly in your browser. No image is uploaded. The classification comes from fixed geometric ratios, not from a subjective opinion.
Related tools
Measurements that read alongside face shape.
Bizygomatic width to height
fWHR face scan
Facial width-to-height ratio compares the horizontal width of your cheekbones against the vertical height of your upper face.
Jawline structure index
Gonial angle face scan
The angle at the back of the jaw, where the lower border meets the posterior border, a core index of lower-face definition.
Vertical proportion balance
Facial thirds face scan
The face is divided into three equal vertical zones: hairline to brow, brow to nose base, and nose base to chin. We measure how evenly your landmarks fall within each.
Every tool