What Makes a Face Attractive? 17 Metrics Science Actually Measures
Attractiveness is not random. Decades of research have identified specific, measurable facial properties that consistently predict how attractive a face is perceived to be. Here are the 17 metrics that matter most — and how to measure yours.
TL;DR
Symmetry is king. It's the single strongest predictor of perceived attractiveness across cultures.
Proportions matter more than individual features. The relationship between features outweighs any single feature.
Many metrics are improvable through grooming, posture, skincare, and fitness.
Measure yours free: Take the looksmaxxing test — all 17 metrics with percentile rankings.
The big three: symmetry, averageness, and sexual dimorphism
Before diving into specific metrics, it helps to understand the three meta-principles that decades of research (Rhodes 2006, Little et al. 2011, Langlois & Roggman 1990) have identified as the foundations of facial attractiveness:
Symmetry signals developmental stability and genetic health. Faces with higher bilateral symmetry are rated more attractive across every culture studied. Averageness — how close your proportions are to the population mean — is paradoxically attractive because average faces have the most balanced, harmonious proportions. Sexual dimorphism — masculine features in men (strong jaw, prominent brow ridge) and feminine features in women (fuller lips, larger eyes) — signals hormonal health.
These three principles drive the specific metrics below. Each metric is a measurable proxy for one or more of these underlying factors.
The 17 metrics (and what they measure)
1. Bilateral symmetry
The degree to which the left and right halves of the face mirror each other. Measured by comparing distances between corresponding landmarks on each side. Perfect symmetry is a score of 1.0; most people score 0.92-0.97. Studies by Grammer & Thornhill (1994) showed symmetry alone explains up to 30% of variance in attractiveness ratings.
2. Canthal tilt
The angle of the eye from inner to outer corner. A positive tilt (outer corner higher than inner by 5-8 degrees) is associated with a youthful, alert appearance. Negative canthal tilt increases with age and is one reason faces look "tired." This is one of the most discussed metrics in the looksmaxxing community — measure yours here.
3. Facial width-to-height ratio (FWHR)
The ratio of bizygomatic width (cheekbone to cheekbone) to upper face height (brow to upper lip). Ideal range is 1.8-2.0 for men and 1.7-1.9 for women. Higher FWHR in men is associated with perceptions of dominance and masculinity (Carre & McCormick 2008). Calculate your FWHR.
4. Jawline angle
The angle formed at the gonion (jaw corner). A sharper angle (110-120 degrees for men) signals a defined, masculine jaw. Wider angles give a softer, rounder appearance. Jawline definition is one of the most impactful features for male facial attractiveness.
5. Facial thirds
The face is divided into three horizontal zones: hairline to brow (upper third), brow to nose base (middle third), nose base to chin (lower third). Research shows the most attractive faces have roughly equal thirds. Significant imbalances — like a long midface — can make a face appear less harmonious.
6. Midface ratio
The length of the midface (pupil to upper lip) relative to total face height. A shorter midface ratio is generally preferred, as a long midface can make the face appear "horsey." Ideal ratios cluster around 0.43-0.46 of total face height.
7. Eye spacing ratio
The distance between the inner corners of the eyes relative to face width. Ideal spacing is roughly 46% of face width (approximately one eye-width apart). Eyes too close together or too far apart deviate from the attractive average.
8. Golden ratio adherence
Multiple facial proportions are compared against phi (1.618). Kiekens et al. (2008) found that faces with ratios closer to phi were rated significantly more attractive. This includes the ratio of face length to width, lip to nose proportions, and eye-to-mouth distances.
9-12. Nose-to-face ratio, lip fullness, chin projection, brow ridge
These individual feature metrics measure how each feature relates proportionally to the whole face. A nose that is 20-25% of face height, lips where the lower lip is about 1.6x the upper lip, chin projection that aligns vertically with the lower lip, and brow ridge prominence all contribute to the overall harmony of the face.
13-15. Eye area metrics (interpupillary distance, palpebral fissure, eye tilt consistency)
The eyes are the most-looked-at facial feature. These metrics measure the spacing, opening shape, and symmetry of the eye area specifically. Large, well-spaced eyes with consistent tilt across both sides score highest.
16. Facial contour smoothness
How smoothly the jawline and cheekbones flow from front to side profile. Irregular contours, sudden angles, or asymmetric jaw shapes reduce this score. Grooming (weight management, posture) can significantly improve this metric.
17. Overall facial harmony
A composite metric measuring how well all individual features work together. A face can have imperfect individual metrics but score high on harmony if the proportions are internally consistent. This is the closest thing to a "holistic attractiveness" metric.
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Bone structure metrics (FWHR, jaw angle, chin projection) are largely fixed without surgery. But several high-impact metrics are improvable:
- Symmetry: Better posture, fixing forward head posture, and sleeping position can improve apparent symmetry by 5-10%.
- Facial contour: Losing face fat through overall weight loss can dramatically sharpen jawline definition and improve facial thirds balance.
- Skin texture: A consistent skincare routine (retinoids, SPF, hydration) improves the "canvas" all these proportions sit on.
- Brow and eye area: Grooming (eyebrow shaping, addressing dark circles) can improve perceived eye metrics.
- Overall harmony: Dental work, hairstyle optimization for face shape, and weight management all shift the composite score.
The science has limits
These 17 metrics explain a significant portion of perceived facial attractiveness, but not all of it. Cultural preferences, personal taste, and non-visual factors (voice, body language, personality) play major roles that no geometric measurement can capture.
Use these metrics as a tool for understanding and optimizing your appearance, not as a definitive judgment of your attractiveness as a person. The most attractive version of you is the one who knows their strengths and presents them well.
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