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Harmony · Front view · Ears

Ear Protrusion Ratio

The average horizontal extension of the ears beyond the cheek landmarks, relative to face width.

What is measured

The calculation

Mean absolute ear-to-cheek horizontal gap ÷ cheekbone width × 100

Front view / Measurement guide

Ear Protrusion Ratio: front-view measurement illustrationAn original schematic showing A: Left ear-to-cheek extension; B: Right ear-to-cheek extension; C: Cheekbone width. Lines identify the landmarks used; the drawing is not to scale.ABC

Follow the measurement

Select a label to focus on its line. Select again to show all measurements.

Schematic illustration, not to scale. Lines show the measurement construction; this is not an ideal face or a scored result.

Why it matters

This describes how much the ears contribute to the front-view silhouette. It compares their lateral extent with the face width, not with the width of the ears themselves.

  • Lower: a smaller average horizontal ear-to-cheek gap.
  • Higher: a larger average horizontal ear-to-cheek gap.

Where the idea comes from

FaceIQ adaptation

This is a FaceIQ landmark-based description of facial shape. The linked research provides background on facial measurement or perception; it has not directly validated this exact formula or its score. [1]

A worked example

A 14-unit average gap relative to a 140-unit face width gives 10%.

Example values explain the calculation. They are not a target range and are not measurements of the schematic above.

Research & further reading

The sources below explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; these papers do not collectively validate the scoring system.

  1. [1] Farkas et al. · 2005

    International anthropometric study of facial morphology in various ethnic groups/races

    Documents variation in facial dimensions across sampled populations. Descriptive measurements explain variation; they do not establish an attractiveness score.

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