Facial thirds calculator

Facial Thirds Calculator for Upper, Middle, and Lower Face Balance

Upload a portrait to estimate upper, middle, and lower facial thirds, compare equal facial thirds references, and see how the result fits the broader face harmony context.

Upper third: visible forehead or hairline area to the brow zone.
Middle third: brow zone to nose base, closely related to midface balance.
Lower third: nose base to chin, affected by expression and mouth position.
Equal facial thirds are portrait references, not universal beauty requirements.

Upload a photo to calculate facial thirds

Use a centered front-facing portrait with the forehead or hairline, brows, nose base, lips, and chin as visible as possible for a steadier facial thirds test.

Upload a front-facing photo

JPG, JPEG, PNG, or WebP up to 10MB

JPG, JPEG, PNG, or WebP up to 10MB
Server CPU analysis, photo not stored

Upload a front-facing photo

Visual guide

Photo examples and sample result

Use these visual examples before uploading. A clear front-facing photo helps the detector read landmarks, while angle, blur, or covered features can make the result less stable.

Recommended upload

Clear, centered, front-facing portrait

This kind of image gives the landmark detector the best chance to compare symmetry, thirds, spacing, and ratio cues.

  • Single face with both eyes visible
  • Steady light, neutral angle, no heavy filter

Avoid this upload

Side angle, blur, shadows, or covered features

If key points are hidden or distorted, GoldenFace can still try, but the score and metric notes may be less reliable.

  • Face turned sideways or cropped tightly
  • Sunglasses, mask, hair, low light, or multiple faces

Visual guide

Example result preview

Sample value

32/34/34

Detection confidence

82%

What the report highlights

Upper third: visible forehead or hairline area to the brow zone.80%
Middle third: brow zone to nose base, closely related to midface balance.86%
Lower third: nose base to chin, affected by expression and mouth position.84%

The calculator compares upper, middle, and lower face zones while explaining photo factors that can change a facial thirds test.

How to measure facial thirds

The calculator compares upper, middle, and lower face zones while explaining photo factors that can change a facial thirds test.

  1. 1

    Use a straight-on portrait to reduce perspective distortion.

  2. 2

    GoldenFace estimates landmarks that define the visible upper, middle, and lower zones.

  3. 3

    The facial thirds calculator compares the relative size of each zone.

  4. 4

    Use the result to understand framing, lens angle, midface context, and aesthetic rhythm.

Facial Thirds Calculator FAQ

What are facial thirds?

Facial thirds divide the visible face vertically into upper, middle, and lower zones to discuss balance in a portrait.

How do you measure facial thirds?

A common reference compares the upper face, brow-to-nose-base area, and nose-base-to-chin area. Photos can only estimate these zones from visible landmarks.

What is a facial thirds calculator?

It is a photo-based tool that estimates the three vertical face zones and explains whether they look close to equal in that image.

Why can facial thirds change between photos?

Hairline visibility, camera height, lens distance, expression, tilt, and landmark confidence can change the visible proportions.

Is this a beauty verdict?

No. Facial thirds are a portrait-composition reference, not a verdict on attractiveness or professional advice.