ONE PHOTO / PROPORTIONS
Golden ratio face calculator
Measure inner-brow gap, nose width and lip width relative to your face width. Mark your visible hairline to add facial thirds and compare hairline-to-chin length with φ ≈ 1.618.
These are ratios in one photograph, not a beauty rating or a medical assessment. Your photo stays in this tab.
1. Choose your photo
One clear, front-facing face, relaxed expression and even light. Keep the hairline visible if you want facial thirds.
Awaiting photo.
2. Add your visible hairline
Choose “Mark hairline”, then tap the centre of your visible hairline on the photo. Do not guess through hair or a crop.
Or enter the hairline height in displayed-image pixel coordinates:
The hairline is your manual mark. Brow, nose-base and chin levels are detector estimates; inspect the overlay before interpreting the report.
Your proportion report
Ratios appear after a successful detection.
| Measurement | Your ratio |
|---|---|
| No measurement yet. | |
Facial thirds
Needs a visible hairline mark; no full thirds are inferred from the forehead mesh.
Phi comparison
Needs a visible hairline mark.
There is no combined attractiveness score.
Read the ratios, not a verdict
A ratio is a distance divided by another distance. A lip-to-nose ratio of 1.60 means the detected lip width is 1.60 times the detected nose width in this photo. Pixel distances are not millimetres, and perspective can change the result.
The report keeps width relationships, facial thirds and the phi comparison separate. Facial thirds use an equal-thirds reference of 1:1:1; they are not three segments that should each equal 1.618. Only the marked face-length-to-width ratio is compared with phi here, without turning the distance from phi into a beauty score.
Exact measurements and calculation
The existing MediaPipe Face Landmarker and its front-facing checks supply image-space coordinates. Widths are projected perpendicular to the fitted facial midline: inner-brow endpoints 107/336, lateral nose landmarks 129/358, lip corners 61/291 and lateral face landmarks 234/454. These landmark-based widths approximate the visible features, not clinical anthropometry.
Each width ratio divides the two named projected widths. Facial height levels are projected along the same midline: your marked central hairline, mean inner-brow level 107/336, nose-base landmark 2 and chin 152. The three positive intervals are divided by the upper interval to display upper:middle:lower as 1:x:y. The face-length ratio divides marked hairline-to-chin projected distance by projected face width. Phi is (1 + √5) / 2; the report shows the signed difference, measured ratio minus phi.
The detector does not locate a real hairline. Its upper forehead point is not substituted for one. If the hairline is hidden, omit that mark: width ratios still work, but full facial thirds and full face-length comparison remain unavailable. A manual mark is not a validated anatomical landmark.
What can change the measurement?
Head turn, camera perspective, expression, hair covering the brows, and the placement of your manual mark can change these values. The inherited head-turn rejection is a rough check, not a guarantee that a photo is suitable. Repeat with the same unedited image to check repeatability; do not choose whichever mark gives the most flattering number.
This tool does not measure three-dimensional bone structure, health, attractiveness or cultural preference. Phi is a mathematical reference, not a universal biological target. There is no population ranking or treatment recommendation.
For left–right landmark balance, use the separate face symmetry test. Learn about photo-processing effects and camera-position limits.
Detection reference: Google MediaPipe documentation. All measurement formulas used here are disclosed above.