What is facial analysis?

Facial analysis is the scientific measurement and evaluation of facial proportions, symmetry, and geometric ratios. It involves detecting key facial landmarks and calculating distances and angles between them — such as the inter-eye distance, facial thirds, canthal tilt, jawline width, and nose-to-mouth ratio — then comparing those measurements against established aesthetic benchmarks like the golden ratio (phi ≈ 1.618). AI-powered facial analysis tools like Facemaxify automate this process from a single photo, generating an instant face rating and detailed breakdown of your facial harmony score.

How do you measure golden ratio facial analysis?

Golden ratio facial analysis measures multiple proportions across your face and checks how closely they approximate phi (1.618). Key measurements include: (1) face width at the temples divided by face width at the cheekbones, (2) face length divided by face width, (3) mouth width divided by nose width, (4) nose-to-chin divided by mouth-to-chin, and (5) inter-eye distance relative to eye width. To measure manually, you need a front-facing photo with no tilt, a digital ruler tool, and you measure pixel distances between landmarks. Facemaxify's AI facial analysis does this automatically — just upload a photo and get your golden ratio score instantly for free.

How do you assess facial symmetry analysis from a photo?

To assess facial symmetry from a photo, you compare the left and right halves of the face across multiple horizontal measurement points: eye width and position, eyebrow arch and height, cheekbone prominence, nose tip alignment, and corner-of-mouth position. A perfectly symmetrical face would have identical measurements on both sides. In practice, most faces have minor asymmetries. AI facial symmetry tools like Facemaxify detect 68+ facial landmarks automatically from a front-facing photo and compute symmetry scores for each facial zone, giving you an objective measure of how symmetrical your face is.

How do you measure facial golden ratio analysis?

Measuring facial golden ratio analysis requires identifying key facial landmarks and computing the ratios between them. The most important golden ratio checkpoints are: face length ÷ face width (ideal ≈ 1.618), nose base width ÷ mouth width (ideal ≈ 0.618), and the spacing of facial features in horizontal thirds (forehead, midface, and lower face each approximately equal). You can measure these manually using a front-facing photo and a pixel ruler, or use an AI facial analysis tool like Facemaxify, which automatically detects all landmarks and calculates every golden ratio proportion in seconds — completely free.

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Eye Spacing Ratio Calculator: How to Measure Eye Separation

Your eye spacing ratio is the gap between your inner eye corners divided by the width of one eye, and an ideal face lands close to 1.0.

If you searched for an eye separation ratio calculator, an eye space ratio calculator or an eye spacing ratio calculator, you want one number: are your eyes close-set, wide-set or balanced? This guide shows exactly how that number is calculated, how to measure it yourself from a photo, what counts as normal, and what you can (and cannot) do about it.

You can skip the maths and get your result in seconds with the free Facemaxify eye spacing calculator. Read on if you want to understand what the score means.

What is the eye spacing ratio?

Eye spacing describes how far apart your eyes are. Anatomists call the gap between the inner corners the intercanthal distance, and it is what most online calculators mean by "eye separation".

Because a raw distance in millimetres means nothing without context, calculators express it as a ratio against the width of your own eye:

Eye spacing ratio = distance between inner eye corners ÷ width of one eye

An ideal result is about 1.0, meaning the space between your eyes is roughly as wide as one of your eyes. This is the heart of the classic rule of fifths: viewed straight on, the face is about five eye-widths wide.

One eye-width from the edge of the face to the outer corner of the first eye
The first eye
The gap between the eyes
The second eye
One eye-width from the outer corner of the second eye to the edge of the face

How the eye spacing ratio is calculated

The Facemaxify calculator uses two ratios and combines them into a score out of 100:

Ratio	Formula	Ideal
Inter-eye ratio	Gap between inner eye corners ÷ eye width	1.0
Rule of fifths	Face width at the cheekbones ÷ eye width	5.0

It labels your eyes wide-set if the gap is more than 1.2 eye-widths, close-set if it is less than 0.8, and ideally spaced in between.

Inter-eye ratio	What it means
Below 0.8	Close-set
0.8 – 1.2	Within the normal, balanced range
Above 1.2	Wide-set

These cut-offs are rules of thumb used by this calculator, not medical definitions. Most people sit somewhere between 0.9 and 1.1, so a result slightly off 1.0 is completely normal.

How to measure your eye spacing ratio from a photo

You do not need special software. You need a clear front-facing photo and a way to measure pixel distances (any free image editor with a ruler tool works).

Take a straight-on photo. Face the camera directly, relaxed, eyes open, no squint or smile, glasses off.
Keep the camera at arm's length or further. Close-up selfies exaggerate the centre of the face, including the space between your eyes.
Measure the width of one eye from its inner corner to its outer corner. Do both eyes and average them.
Measure the gap between the two inner eye corners.
Divide the gap by the eye width. That is your inter-eye ratio.
Measure face width across the cheekbones and divide by eye width to check the rule of fifths (ideal about 5.0).

Worked example: if each eye is 30 mm wide on the screen and the gap between them is 33 mm, your ratio is 33 ÷ 30 = 1.1. That is well inside the balanced range. If the face is 150 mm wide, 150 ÷ 30 = 5.0, a textbook rule-of-fifths face.

Measuring by hand is error-prone, because a single pixel in the wrong place at the eye corner changes the result. An automated calculator places the landmarks for you and measures both eyes consistently.

Does your photo ruin the result?

Eye spacing is one of the easiest measurements to distort. Before trusting any calculator, check your photo:

Head turn: even a small rotation shortens the visible width on one side and throws off both ratios.
Camera distance: a phone held close warps the middle of the face.
Expression: squinting or a big smile changes where the eye corners sit.
Glasses and heavy eye makeup: they hide or visually move the eye corners.
Tilt: a tilted head changes the horizontal measurement; keep the line between your eyes level.

Retake the photo two or three times and compare. If the ratio moves a lot between photos, the photo, not your face, is the problem.

Close-set vs wide-set eyes

Close-set eyes (ratio below about 0.8) can give a focused, intense look, and may make the nose look longer or narrower.

Wide-set eyes (ratio above about 1.2) tend to read as open, youthful and approachable. Slightly wide-set eyes are common among models. Very wide spacing can make the middle of the face look less defined.

Neither is "bad". They are proportions, and proportions only look good or bad in the context of the rest of the face.

Is there an ideal eye separation for attractiveness?

Faces with typical proportions tend to be rated as more attractive than faces at either extreme, a pattern researchers call averageness. A 2010 study by Pallett, Link and Lee found that faces looked most attractive when the distance between the pupils was about 46% of face width, close to the average face.

That figure is measured pupil to pupil, so it is not identical to the rule of fifths, which gives slightly less than that. The takeaway is that the ideal is a range, not a point. Being a little wide or a little close is well within what people find attractive.

Eye spacing is also hard to judge by eye, because brows, eyelid shape, the nose bridge and eye makeup all change how far apart the eyes seem.

When is eye spacing a medical issue?

In everyday use, wide-set and close-set are cosmetic descriptions. The medical terms hypertelorism (abnormally wide-set eyes) and hypotelorism (abnormally close-set eyes) refer to the distance between the bony eye sockets, diagnosed by a doctor, usually together with other features. A photo calculator cannot diagnose either, and having eyes on the wider or closer side of normal is not a medical condition. If you are worried, ask a doctor.

Can you change your eye spacing?

The distance between your eyes is set by the bones of your skull and does not change after you are grown. What you can change is how it looks:

For wide-set eyes: makeup that is darker towards the inner corners and brows that start a little closer to the nose visually pull the eyes together. Frames with a dark or heavy bridge help too.
For close-set eyes: a lighter shade on the inner corners, a darker shade or wing at the outer corners, and brows that start slightly further from the nose visually widen the gap. Clear or thin glasses bridges help.

What to measure next

Eye spacing is one piece of the horizontal balance of your face. Once you have your ratio, these measurements give the full picture:

Canthal tilt calculator: the angle of your eyes
Hunter eyes test: eye shape and tilt combined
Facial thirds calculator: vertical proportions
Face symmetry test: whether your eyes sit evenly around your midline
Golden ratio face calculator: eye and mouth proportions against 1.618

Or run the full Facemaxify facial analysis to see all of them mapped on your own face.

Frequently asked questions

What is the ideal eye spacing ratio?

About 1.0: the gap between your inner eye corners should be roughly the width of one eye. Anything from about 0.8 to 1.2 is within the normal, balanced range.

How do I calculate my eye separation ratio?

Divide the distance between your inner eye corners by the width of one eye, measured on a straight-on photo. Or use a free calculator such as the Facemaxify eye spacing calculator, which measures it from your photo in your browser.

How do I know if I have wide-set or close-set eyes?

If the gap between your inner eye corners is more than about 1.2 eye-widths, your eyes are wide-set. If it is less than about 0.8, they are close-set.

Are wide-set eyes attractive?

Slightly wide-set eyes are often considered attractive because they read as open and youthful. Very wide or very close spacing is further from the average and tends to be rated a little lower.

What is the rule of fifths?

A guide that says the face is about five eye-widths wide across the eyes: one for each eye, one for the gap between them, and one on each side.

Is eye spacing the same as interpupillary distance?

No. Eye spacing as used here is the gap between the inner eye corners, compared with eye width. Interpupillary distance is measured pupil to pupil in millimetres, and opticians use it for glasses. It averages about 63 mm in adults.

Can I change my eye spacing?

Not the bones, but you can change how it looks with brow shaping, makeup and glasses frames.

Is the Facemaxify eye spacing calculator free?

Yes. It is free, needs no signup, and runs in your browser.