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Facial Thirds Test
The oldest rule of facial proportion: forehead, midface and lower face should each take about a third. Symmi measures your three as percentages and shows which one is long or short.
Drop a photo, paste one, or choose a file
Straight-on, whole face visible, even light. JPG, PNG or WebP.
Runs in your browser. Your photo never leaves your device.
How it is measured
Three segments of one vertical line.
The face is split at the brow line and the base of the nose. The hairline is estimated from the forehead landmarks (the mesh stops just below it) because hair covers it in most photos, so the upper third is the least certain of the three; the middle and lower thirds are measured directly from landmarks and are the readings the Symmi app scores.
- Upper third
- Hairline to brow. The hairline is estimated from the forehead landmarks, so treat this one as approximate. The balanced band is 30 to 36 percent.
- Middle third
- Brow line to the base of the nose. Balanced band 30 to 36 percent. A long middle third reads as a long midface.
- Lower third
- Nose base to chin. Balanced band 30 to 37 percent. A short lower third reads as a small chin; a long one as a long face.
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FAQ
Do the thirds need to be exactly equal?+
No. Faces rated attractive usually sit within a few points of equal, with a slightly longer lower third on men and a slightly shorter one on women. Ten points off on one third is what viewers notice.
My upper third is off, is that real?+
Possibly not. The hairline is estimated, so treat the upper third as a rough number. The middle and lower thirds are measured and reliable.
Can the lower third be changed?+
Its bone length cannot. What can shift the reading is chin and jaw soft tissue and posture, both of which the Symmi routine targets. The app measures the lower third and the midface ratio on every scan so you can see whether it moved.
Is my photo uploaded?+
No. Everything runs in your browser.
One reading here.
Nineteen in the app.
A controlled scan, every reading against its ideal band, bone vs trainable, a plan, and a 3D model on Face ID iPhones.