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AI Rate Face

Midface Ratio Calculator

Midface ratio is quoted constantly and defined inconsistently. Upload a photo to get yours with the definition this page uses stated up front, both underlying distances in pixels, and a long, short or balanced reading.

Analyze a photo →

Calculate your midface ratio

Upload a front-facing photo — both distances are measured from local landmarks in this browser and shown alongside the ratio.

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.

Your photo and landmarks stay in page memory and are cleared when you reset or leave. Face-shape tools keep a small result summary in this tab for up to 30 minutes so you can continue to hairstyles or glasses. Clear the result to remove it.

Drag to reposition

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.

Evidence behind this result

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

01

Stated definition

Vertical distance from the interpupillary line to the top of the upper lip, divided by the distance between the pupils.

02

Both distances

The numerator and denominator are printed in pixels so the ratio can be checked rather than trusted.

03

Context ratio

The midface is also expressed as a share of total visible face length.

How this tool works

  1. 1. Locate

    Eye centres and the upper-lip landmark are detected locally.

  2. 2. Rotate

    Distances are taken in an eye-line-aligned frame so small head roll does not inflate the height.

  3. 3. Divide

    The height is divided by the interpupillary distance to give a scale-independent ratio.

What the result cannot tell you

01

Published midface definitions differ; a value from another calculator will not necessarily match this one.

02

Camera distance and lens focal length compress or stretch vertical facial distances.

03

A compact or elongated reading is a description of proportion, not a defect or a target for treatment.

What is a good midface ratio?+

Sources that quote a reference usually place it near 1.00, meaning the eye-line-to-lip height is close to the distance between the pupils. This page treats roughly 0.95–1.05 as balanced and describes anything outside it directionally rather than as a fault.

Why does my ratio differ from another calculator?+

Because the landmarks differ. Some tools measure to the nose base, some to the mouth centre, and some use bizygomatic width instead of interpupillary distance. This page states its own definition on the result.

Does camera distance matter?+

Yes, considerably. A close phone selfie enlarges the nose and midface region relative to the pupils. Step back and zoom in for a more stable measurement.