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AI Rate Face
Local measurement tool

Facial Ratios Calculator

Turn one suitable front-facing photo into a neutral proportion table. Values are shown as measured, with classical references labelled where they exist.

Analyze a photo locally →
On-device analysis

Calculate facial thirds and width ratios

All measurements happen on your device; download the annotated image if you want to keep it.

Photo stays in this browser

Choose one clear adult portrait

Front-facing, neutral expression, even light. JPG, PNG, WebP, HEIC or HEIF up to 10 MB.

or drag and drop it here

Before you analyze

  • 1Use your own photo, or one you have permission to use.
  • 2One adult face only. No minors or age estimation.
  • 3Results describe this photo, not objective beauty or health.

A typical first run loads about 15 MB of model/runtime files, then the browser caches them. Nothing is submitted to our analysis API.

Local mode: the selected image and detected landmarks are held in page memory only and are cleared when you reset or leave.

Drag to reposition
Local face crop

Adjust the face area

Keep one full face inside the oval. Leave the hairline and chin visible, with a little space around the head.

For more reliable detection

  • • Select only one adult when the photo contains several people.
  • • Avoid cutting through the forehead, chin or either side of the face.
  • • Cropping helps framing, but cannot restore blur or very low resolution.

The crop is created in this browser and is never uploaded.

What it measures

Evidence behind this result

The output is built from inspectable photo geometry and a separate image-quality signal.

01

Facial thirds

Estimates upper, middle and lower vertical sections from visible landmarks.

02

Fifth-related spacing

Compares face width, eye width and the inter-eye gap.

03

Feature widths

Reports nose and mouth width as a share of visible cheek-level width.

01Visible landmarks
02Normalized geometry
03Explainable output
Three-step method

How this tool works

01

Landmark

One face is mapped locally into a normalised coordinate set.

02

Measure

Distances are calculated in image-pixel space to preserve the photo aspect ratio.

03

Report

Percentages and ratios are displayed with only clearly identified references.

478 visible landmarksMediaPipe Tasks Vision 0.10.35Model: float16 v1Runs in browser
Read the shared methodology →
Interpret carefully

What the result cannot tell you

01

The upper third depends on the visible hairline/forehead contour and can be affected by hair.

02

Classical thirds and fifths are artistic conventions, not requirements for a normal face.

03

The measurement is two-dimensional and changes with focal length, distance and head angle.

Questions, answered

About this tool

How local processing works →
What are facial thirds?+

They are an artistic convention dividing the visible face vertically into upper, middle and lower sections.

What are facial fifths?+

Another classical convention treats facial width as roughly five eye widths, with about one eye width between the eyes.

Can I download the results?+

Yes. After analysis you can download the photo with the relevant local landmark overlay.

Keep exploring

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