How does the AI face shape detector work?

Our tool uses face-api.js powered by TensorFlow.js to detect 68 facial landmark points directly in your browser. It then calculates key measurements — face width, length, forehead, cheekbones, and jawline — and classifies your face shape using proven geometric ratios. All processing happens locally on your device.

Is my photo stored or uploaded anywhere?

No. Your photo never leaves your device. All AI analysis runs entirely in your browser using WebAssembly and TensorFlow.js. We don't have a server that receives your image. This is a core feature of our privacy-first design.

What are the 6 face shape types?

The six main face shapes are: Oval (balanced, slightly longer than wide), Round (nearly equal length and width with soft curves), Heart (wider forehead, narrower jaw), Square (strong angular jaw, similar forehead/jaw width), Diamond (prominent cheekbones, narrow forehead and jaw), and Oblong (significantly longer than wide with similar top/bottom width).

How accurate is the face shape detection?

Our AI is highly accurate for clear, front-facing photos with good lighting. The detection uses 68 anatomical landmark points and geometric ratio analysis. For best results, use a photo where your full face is visible, you're looking straight at the camera, and there are no accessories covering key facial features.

What photo should I use for best results?

For the most accurate results: use a front-facing photo with your face fully visible, ensure good, even lighting (avoid harsh shadows), pull your hair back if possible, look straight at the camera, and make sure your face takes up at least 30% of the frame. Avoid glasses or face coverings.

Can I use this tool on mobile?

Yes! FaceShape AI is fully mobile-responsive and works on all modern smartphones and tablets. You can upload a photo directly from your camera roll or take a new photo using your device camera.

What do the hairstyle recommendations mean?

Each face shape has hairstyles that are most flattering for it based on established beauty principles. These recommendations aim to create visual balance — for example, adding height for round faces or width for oblong faces. They're starting points, not strict rules — personal style always wins!

What is the facial symmetry score?

Your symmetry score measures how evenly balanced your facial features are from left to right, how your proportions compare to the golden ratio (1.618:1), and how defined your jawline is. Higher scores indicate greater facial harmony. No face is perfectly symmetrical — variation is natural and beautiful.

Do I need to create an account?

No account required. FaceShape AI is completely free and requires zero sign-up. Just visit the site, upload your photo, and get your results instantly.

Why does it take a few seconds on the first use?

On your first visit, the AI model files (~6MB) need to be downloaded from our server to your browser. This is a one-time download — after that, your browser caches the models and all subsequent analyses are instant. We use lazy loading so models only download when you interact with the tool.

Can I use my camera to detect my face shape?

Yes! Our face shape detector includes a built-in camera feature. Just click 'Take Selfie', allow camera access, and capture your photo directly in the browser. Your camera turns off immediately after the photo is taken and nothing is stored.

How to Measure Your Face Shape at Home (Step-by-Step)

While our AI face shape detector gives you an instant, precise answer using 68 facial landmark points, some people prefer the hands-on approach. Measuring your face yourself gives you a clear understanding of your proportions — and the numbers don't lie.

This guide walks you through the exact measurements you need, how to take them accurately, and how to interpret the results.

What You Need

A flexible fabric measuring tape (the kind used for sewing) or a ruler and a pencil
A mirror
Good lighting
A notepad to record measurements

If you don't have a fabric tape measure, you can also use a piece of string and then measure the string against a ruler.

The 4 Key Measurements

Your face shape is determined by four measurements and the relationship between them:

Measurement 1: Forehead Width

How: Place the tape measure across your forehead from one hairline edge to the other, at the widest point. This is typically about halfway between your eyebrows and your natural hairline.

What to note: Record this number in centimeters or inches.

Measurement 2: Cheekbone Width

How: Place the tape measure across your face at the level of the outer corners of your eyes. The widest point is usually just below the outer corner of each eye, at the top of your cheekbones.

What to note: This is often the widest measurement overall.

Measurement 3: Jawline Width

How: This is the trickiest one. Measure from the tip of your chin to the point directly below your ear where your jaw angles upward. Double this number — that's your total jaw width.

Alternatively: Measure straight across your jaw at its widest point, just above where your jaw angles up toward your ears.

What to note: A wide, angular jaw suggests a square face. A narrower, rounder jaw suggests oval or round.

Measurement 4: Face Length

How: Measure from the center of your natural hairline (the highest point at the top center of your forehead) straight down to the tip of your chin.

What to note: Face length is the most important ratio measurement. It determines whether your face reads as "long" or "short" relative to its width.

Face Shape Measurement Chart

Use this table to interpret your four measurements. Focus on the ratios and relationships between numbers, not the absolute values — everyone's face is a different size.

| Face Shape | Key Ratio | Forehead vs Jaw | Cheekbones | Jawline | |---|---|---|---|---| | Oval | Length ≈ 1.5× width | Forehead slightly wider than jaw | Widest point, gently curved | Rounded, tapers gently | | Round | Length ≈ equal to width | Similar widths | Same as forehead width | Soft, rounded, no angles | | Heart | Forehead > jaw | Forehead notably wider | Below forehead | Narrow, pointed chin | | Square | Length ≈ width | All three roughly equal | Equal to jaw and forehead | Wide, angular, sharp corners | | Diamond | Length > width | Forehead ≈ jaw (both narrow) | Widest by far | Narrow, pointed | | Oblong | Length >> width | All three roughly equal | Moderate width | Squared or slightly rounded |

How to Interpret Your Results

If your face length is about 1.5× your cheekbone width...

You likely have an oval face shape — the most common and considered the most versatile. Your forehead is slightly wider than your jaw, and your cheekbones are the widest point.

If your face length is roughly equal to your cheekbone width...

You likely have a round face. Look at your jaw: if it's soft and rounded, that confirms round. If it has sharp, defined corners, you may have a square face.

If your forehead is significantly wider than your jaw...

You likely have a heart face shape. The classic heart has a wide forehead, prominent cheekbones, and a narrow or pointed chin.

If your cheekbones are dramatically wider than both your forehead and jaw...

That's the hallmark of a diamond face shape. Diamonds have narrow foreheads, extremely wide cheekbones, and a narrow, angular chin.

If your face is much longer than it is wide...

With roughly equal forehead, cheekbone, and jaw widths, you have an oblong (or rectangular) face shape.

Common Mistakes When Measuring

Measuring over hair: Pull your hair back completely. Measuring over hair puffs up your forehead and cheek width artificially.

Inconsistent tension: Keep the tape snug but not tight. Too loose adds width; too tight reduces it.

Measuring the wrong hairline: Use your natural hairline, not where your hair currently falls. If you're receding or have a high forehead, use where your hairline originally was.

One-time measurement: Take each measurement twice and average the two results for accuracy.

When Measurements Don't Give a Clear Answer

Measurement ratios can be ambiguous, especially if you fall between two shapes. This is completely normal — most people have a dominant face shape with secondary characteristics from another.

In these cases, look at your most distinctive feature:

Jaw shape is often the deciding factor between oval/round and square/oblong
Forehead-to-jaw difference distinguishes heart from oval
Cheekbone prominence is the clearest marker of diamond shapes

Or — skip the ambiguity entirely and use our AI face shape detector. It weighs all the proportions simultaneously and gives you a confidence score for each shape, so you can see exactly where your face falls.

Quick Reference: What Your Shape Means for Style

Once you have your face shape, put it to work:

Oval: Almost any style works. Explore oval hairstyles
Round: Add length and definition. Round face hairstyles for women
Heart: Balance wide forehead, add jaw width. Heart face hairstyles
Square: Soften angles, add height. Square face hairstyles
Diamond: Minimize cheekbone width. Diamond face hairstyles
Oblong: Add width, reduce length. Oblong face hairstyles

For the fastest, most precise result: Try the free AI Face Shape Detector →