Face Measurement Guides
What each number means, what the research actually supports, and which free tool measures it — one question per guide.
What Is a PSL Score?
What a PSL score actually measures: the 0–8 bands, why the median is 4.0, how it converts to the familiar 1–10 — and a free calculator to find yours.
How to Take a Fair PSL Test?
A standardized PSL test: controlled conditions, one measurement, and a 30-day retake protocol so your deltas actually mean something. Free, on-device.
What Is Canthal Tilt?
Canthal tilt is the angle between your inner and outer eye corners. Positive tilt is the community ideal. What it means, reference values, and how to measure yours.
What Is the PSL Scale?
The PSL scale explained: every tier from LTN to Chad, the 8 facial metrics behind your score, and a free instant test. See where you actually fall.
What Are the PSL Tiers?
The full PSL tier list: Chad, Chadlite, HTN, MTN, LTN and Very Low — population share, defining features, female equivalents and where you land.
How Does FaceRuler Measure Faces?
The public scale behind FaceRuler: all 8 metric formulas with reference bands, the 5-dimension weights, the median-anchored curve, calibration policy and honest limitations.
What Is My Face Shape?
Your face shape comes from three outline ratios: length vs width, jaw vs cheekbones, forehead vs jaw. Learn the 7 shapes and their cut points, then measure yours.
What Are Facial Ratios?
Facial ratios divide one face distance by another: thirds, FWHR, jaw width, midface and more. See the reference values, what the research supports, and how to measure yours.
What Is the Golden Ratio Face?
The golden ratio face claims beautiful faces follow 1.618. Measured faces center near 1.46, and the research favors averageness. Here is what the ratios mean and how to test yours.
How Is Attractiveness Rated 1–10?
A 1–10 attractiveness rating is usually a weighted mix of symmetry, proportions, structure and eyes. What the numbers mean, why 6.4 is average, and how to get a fair reading.