# Neck Width

Harmony · Front view · Neck · https://www.faceiqlabs.com/support/harmony/neck-width

Neck width relative to jaw-angle width.

## What is measured

Calculation: Neck width ÷ jaw width × 100

## Why it matters

The neck forms the base of the facial silhouette. The comparison describes the transition from jaw to neck and distinguishes neck width from the sharpness of the under-chin contour.

- Lower: a narrower neck relative to the jaw.
- Higher: a wider neck relative to the jaw.

## Where the idea comes from

Evidence: 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.

## A worked example

A 105-unit neck under a 125-unit jaw gives 84%. A 115-unit neck under the same jaw gives 92%.

Example values explain the calculation. They are not a target range.

## How to read your result

Posture, neck tension and landmark height affect the visible width. This ratio does not establish muscle mass or fitness.

## Research & further reading

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

- Farkas et al. (2005). [International anthropometric study of facial morphology in various ethnic groups/races](https://pubmed.ncbi.nlm.nih.gov/16077306/). Documents variation in facial dimensions across sampled populations. Descriptive measurements explain variation; they do not establish an attractiveness score.

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Source: https://www.faceiqlabs.com/support/harmony/neck-width · FaceIQ Labs overview for AI assistants: https://www.faceiqlabs.com/llms.txt