What Face Shape Do I Have? How to Find Out and What It Means

Face shapes are determined by four key measurements: forehead width, cheekbone width, jawline width, and face length (hairline to chin). The relationship between these four numbers places your face into one of seven categories recognised across cosmetology, aesthetic medicine, and computational facial analysis.

Oval: face length is roughly one and a half times the cheekbone width, with a slightly narrower forehead than cheekbones and a gently rounded jaw. Round: width and length are approximately equal, with full cheeks and a rounded jaw. Oblong (Rectangle): face is significantly longer than wide, with similar width across forehead, cheekbones, and jaw. Heart: forehead is widest, cheekbones narrower, jaw narrowest, often with a pointed chin. Square: forehead, cheekbones, and jaw are approximately equal width, with a sharp, angular jawline. Diamond: cheekbones are widest, with a narrow forehead and narrow jaw. Triangle (Pear): jaw is widest, forehead narrowest.

Most people cluster around two or three shapes rather than fitting cleanly into one. A face that is almost oval but slightly longer is often described as oblong; one that is almost oval but slightly wider is often described as round. The categories are a useful framework, not rigid boxes.

Pull your hair fully back and stand in front of a mirror in even light. You need four measurements. Use a soft measuring tape if available; if not, mark the width points on the mirror with a dry-erase marker and measure between them with a ruler.

Step 1 — Forehead: measure hairline width at the widest point (typically just above the temples). Step 2 — Cheekbones: measure across your face at the widest point, usually roughly level with the outer corners of your eyes. Step 3 — Jawline: measure from the point of your chin out to the angle of the jaw on one side, then double it. Step 4 — Face length: measure from the centre of your hairline straight down to the tip of your chin.

Now compare: if your cheekbones are widest and your face is about one and a half times longer than wide, you are likely oval. If the measurements across forehead, cheekbones, and jaw are close to equal with a sharp jaw, you are square. If cheekbones are widest and the face is longer, diamond. If length equals width, round. If jaw is clearly widest, triangle. If forehead is widest with a pointed chin, heart.

The oval face shape is consistently rated as most classically attractive across cultures and research studies. The reason is proportional: the oval shape naturally approximates the facial thirds principle — equal height across the upper, middle, and lower facial zones — while also demonstrating balanced width-to-length ratios. These proportions are associated in evolutionary psychology with developmental stability and genetic health.

A 2006 meta-analysis by Gillian Rhodes found that facial symmetry and proportionality are cross-culturally consistent predictors of attractiveness ratings. The oval shape, by definition, scores well on both dimensions. This does not mean other shapes are unattractive — square faces are consistently rated as strong and dominant, heart shapes as youthful and feminine, diamond shapes as striking and distinctive.

Attractiveness is also strongly modifiable by how you frame your face. A square face with a well-chosen haircut that adds height and softens the jawline can score higher on attractiveness ratings than an oval face with a poor haircut. Knowing your face shape lets you optimise the modifiable variables.

AI face analysis tools work from the same landmark measurements you take manually, but with significantly higher precision. Google MediaPipe maps 478 landmarks per face, enabling sub-millimetre width and length calculations that eliminate the measurement error of manual methods. The result is a face shape classification that is consistent regardless of lighting variation or slight head tilt.

Beyond classification, AI can calculate the ratio between your measurements and reference proportions — telling you not just that your face is oval, but how closely it approximates the proportional ideal and which specific measurements deviate most from it. This is significantly more actionable than a category label alone.

The Rate My Face tool uses these landmarks to calculate face symmetry, facial thirds, eye spacing, and jawline definition — all of which correlate with face shape in specific ways. A square face will typically show strong jawline definition scores; a heart face may show slightly weaker lower-third proportions; a diamond face often shows above-average cheekbone prominence.

The practical use of knowing your face shape extends well beyond the hairstyle recommendations most style guides focus on. In portrait photography, your face shape determines which camera angle is most flattering: oval and heart faces photograph well from almost any angle; square and oblong faces benefit from slightly lower camera positions to emphasise jaw structure; round faces benefit from higher camera positions and three-quarter angles that add apparent length.

In video calls and professional headshots — contexts with significant career implications — understanding your face shape allows you to set up your camera and lighting to emphasise your strongest features rather than accidentally flattening them. A round face filmed straight-on in flat light looks rounder; the same face filmed with slight side lighting and a slightly elevated camera reads as more defined.

Knowing your face shape is also the foundation for interpreting your AI attractiveness score. Two faces with identical composite scores can have completely different strengths — one strong in symmetry, one strong in jawline definition. Your face shape tells you which dimension is doing the most work in your overall rating.