PHOTO GEOMETRY · LOCAL
Golden Ratio Face Calculator
Measure three ratios that this front-facing landmark model can actually support. Each line is drawn on your photo, with the formula and a 1.618 comparison shown beside it.
Preparing the analyzer… Your photo will stay on this device.
Three supported ratios
Visible face height/width, eye span/inner-eye gap, and lower-face height/mouth width are measured from detected landmarks.
Lines and formulas
The overlay draws the exact numerator and denominator segments behind each number, so the result remains inspectable.
1.618 is a reference
There is no universal facial golden-ratio target. Deviation is not a defect, ranking, or medical finding.
THREE VISIBLE RATIOS
The calculator shows each numerator, denominator, and result
Face height ÷ face width
The visible landmark height of the face divided by cheek-to-cheek width in the same normalized image.
Outer-eye span ÷ inner-eye gap
The distance between the outer eye corners divided by the distance between the inner eye corners.
Lower-face height ÷ mouth width
The distance from the nose bottom to the chin divided by the visible mouth-corner span.
Each distance comes from the same 2-D photo and is normalized, so no millimetre claim is made. The tool shows how far each result is from φ ≈ 1.618 as a mathematical comparison. It does not assume every facial ratio should equal 1.618 or turn deviation from phi into a defect.
CONTROLLED EXAMPLE
A worked example from our reproducibility fixture
The documented public fixture returned ratios of 1.229, 2.563, and 1.114 on its unchanged source image. After deterministic brightness, crop, and 5° rotation transformations, the accepted readings shifted slightly. The exercise is intentionally narrow: it demonstrates repeatable photo-space calculations and their sensitivity to the image, not a universal ideal-face rule.
Review the source image, hashes, transforms, and readingsIs it your proportion, or the photo?
Head turn
When one side turns away, its visible span changes. A front-photo calculation cannot reconstruct the hidden surface. Retake straight on rather than interpreting the result as a permanent difference.
Head tilt and chin position
The tool corrects in-plane roll using the eyes. It does not fully correct a lifted chin, lowered chin or three-dimensional turn. Keep the camera at eye level.
Camera distance and framing
A close selfie and a more distant portrait can show different apparent proportions. Keep the setup consistent; a center crop changes framing, not the original viewpoint.
Expression, light and occlusion
Smiling moves mouth corners; shadows and hair can affect landmark placement. Use a relaxed expression and even light, and inspect whether the overlay follows the visible features. Passing our quality checks is not a guarantee of a reliable reading.
Read one example across four versions of a photo
| Photo version | Height / width | Eye span / inner gap | Lower face / mouth |
|---|---|---|---|
| Original photo | 1.229 | 2.563 | 1.114 |
| Brightness −35% | 1.226 | 2.577 | 1.108 |
| Center crop 90% | 1.232 | 2.530 | 1.135 |
| Image rotation +5° | 1.250 | 2.560 | 1.110 |
A small change in a reading does not identify what changed in the person. This experiment changed pixels in one existing image; it did not test a new camera position or a real head turn. It is not a population study or a calibration dataset. Inspect the source, transformations and full record.
LIMITS AND QUESTIONS
How to interpret a golden ratio face result
Does a face need to match 1.618?
No. Phi is a reference constant, not a universal facial target. Human faces contain many ratios, and a single front photo cannot define attractiveness.
Why do other golden ratio calculators disagree?
Tools may choose different landmarks, estimate the hairline differently, crop the face differently, or combine more ratios into one score. Compare formulas before comparing numbers.
Is this an fWHR calculator?
No. Facial width-to-height ratio uses its own landmarks and research definitions. This page reports only the three formulas drawn in the result.
What cannot be measured from this photo?
Profile projection, depth, forehead slope, and side-view angles are not supported by a single front-facing image and are never guessed.
Read the exact scoring boundaries in the methodology, or compare a different geometric task with the face symmetry test.