Free tool · runs in your browser
Golden Ratio Face Calculator
The golden ratio is 1.618. Symmi takes the five facial proportions the classical rule actually uses, measures each from 478 landmarks, and shows how close every one sits to φ. Then it tells you what that does and does not mean.
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
Five ratios. Each one compared with 1.618.
The tool measures five pairs of distances the Marquardt-style analyses use, divides each pair, and reports how far the result is from φ as a percentage. The overall match is the mean of the five. A face with all five near φ is rare; most attractive faces match on two or three.
- Face length ÷ face width
- Estimated hairline to chin over cheekbone-to-cheekbone width. The headline ratio.
- Mouth width ÷ nose width
- Mouth corner to corner over nostril to nostril.
- Eye span ÷ mouth width
- Outer eye corner to outer eye corner over mouth width.
- Nose base–chin ÷ lower lip–chin
- Two lower-face distances that share the chin point.
- Eye line–chin ÷ nose base–chin
- Pupil line to chin over nose base to chin. The proportion that places the eyes in the face.
Related tools
FAQ
Is the golden ratio real for faces?+
As a description of a few proportions viewers tend to like, partly. As a rule that predicts attractiveness, no: peer-reviewed tests find it explains a small share of ratings. Treat it as a fun benchmark with a measured number behind it, not a verdict.
What is a good golden ratio score?+
Matches over 90 percent on a single ratio are common. An overall mean above 90 percent is unusual. Below 80 percent usually means one ratio is far out, and the table shows which.
Can I change any of these?+
Width readings shift with puffiness and jaw tone; the nose-to-mouth and eye ratios are largely bone. The Symmi app grades each of its 19 readings as bone or trainable so you do not spend time on the fixed ones.
Is the photo stored?+
No. It never leaves 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.