Facial thirds and fifths split the face into equal parts: three from top to bottom, five from side to side. They come from old drawing canons, and almost no real face matches them. That is not a flaw in the face. Used as a map, they show where your face carries its length and width, which explains why a fringe, a frame bridge or a brow starting point works for you. Used as a score, they are meaningless, and this page does not use them that way.
You need a ruler, a mirror or a straight-on photo, and five minutes. If you have not measured your overall face shape yet, start with the Face Shape Calculator; thirds and fifths add detail inside that outline.
What thirds and fifths are
Thirds divide the face vertically at three lines:
- Upper third: from the hairline to the point between your brows.
- Middle third: from between the brows to the base of the nose.
- Lower third: from the base of the nose to the bottom of the chin.
Fifths divide the face horizontally at eye level into five parts: from the side of the face to the outer corner of the eye, the eye itself, the gap between the eyes, the other eye, and from its outer corner to the other side. The drawing canon makes each fifth one eye wide.
Both are teaching tools from figure drawing. Artists used them to place features on a blank oval. They were never measurements of real people.
How to measure them at home
Pull your hair off your face and keep a neutral expression. A mirror and a ruler held flat work; so does a photo taken straight on at eye level from at least arm’s length, since a phone held close distorts the middle of the face.
For thirds, measure the three vertical segments. Use your natural hairline, or where it used to be if it has receded. For fifths, measure the width of one eye from corner to corner, the gap between your eyes, and the full face width at eye level.
You only need the comparisons, not the units: which third is longest, and whether the gap between your eyes is more or less than one eye width.
What the map tells you
| If you find | What it explains | Where it helps |
|---|---|---|
| Long upper third (high forehead) | Why a fringe suits you: it shortens that segment | Bangs by face shape |
| Short upper third (low forehead) | Why heavy bangs crowd your brows | Height at the crown instead of a fringe |
| Long middle third | Why frames with a lower bridge or a stronger top line sit well | Glasses frame size |
| Long lower third | Why hair with some width at chin level balances you | Bob by face shape |
| Gap between the eyes wider than one eye | Why brows that start a little further in and a darker frame bridge look balanced | Brow mapping |
| Gap narrower than one eye | Why a lighter or clear bridge and brows starting slightly further out open the space | Eyebrow shape |
None of these is a correction. Each row describes what a styling choice does to a segment, so you can decide whether you want that effect.
Why this is not a score
The canons were tested against real faces decades ago. In 1985, Leslie Farkas and colleagues measured young white North American adults and compared them with the classical canons. The canons turned out to be the exception rather than the rule: the drawn head was longer and wider, with a much smaller chin, than the faces in front of them. Farkas went on to compile measured norms for the head and face instead of drawn ideals.
The golden ratio claim is weaker still. Online “golden ratio face tests” score faces against proportions of about 1.618, usually through a mask published in the early 2000s. A 2008 analysis in Aesthetic Plastic Surgery found that mask ill-suited to many populations and closest to a narrow group of fashion models. A face does not get a grade from its proportions, and this site does not give one.
Symmetry: nobody has it
Measure both sides of your face and you will find differences. That is normal. A 1981 anthropometric study of healthy adults found asymmetry very common and usually mild, with the largest differences in the upper third of the face.
For styling, asymmetry is useful information. It often explains why one side parting looks better than the other, why glasses sit slightly tilted, or why one brow needs a different starting point. Mirrors, and many front cameras, flip your image, so the face you see daily is the reverse of the one others see; a photo taken by someone else shows the unflipped version.
How it fits with face shape
Face shape describes the outline: length against width, and where the widest point sits. Thirds and fifths describe what happens inside it. Two oval faces with the same outline can have different thirds, which is one reason quiz results feel wrong; why face shape quizzes confuse you covers the others. The outline measurements themselves are in the measuring guide.