This calculator estimates your face shape from four simple measurements — forehead, cheekbone, and jawline width, plus face length — comparing their ratios against the classification rules commonly used in hairstyle and eyewear guides. It's a styling reference, not a medical or diagnostic tool.
How the classification works
The calculator computes three ratios from your four measurements: length divided by cheekbone width (how elongated the face is), jaw divided by cheekbone width (how strong or tapered the jaw is), and forehead divided by jaw width (how much the face narrows from top to bottom). These ratios are checked in priority order: a clearly widest cheekbone signals Diamond; a wide forehead tapering to a narrow jaw signals Heart; a notably long face signals Oblong; near-equal widths with a short face signal Square; a short face with a narrower jaw signals Round; and a balanced, moderately elongated face without any strong imbalance falls to Oval as the default.
No single measurement decides the outcome — it's always the combination of ratios that determines the category.
Inputs and what they mean
All four inputs are widths or a length, entered in centimeters or inches. Forehead width is measured at the widest point, roughly eyebrow level. Cheekbone width is the widest point across the top of the cheekbones — usually the widest measurement on most faces. Jawline width is measured across the jaw just below the ears; a jaw close to the cheekbone width reads as "strong," while a notably narrower jaw reads as "soft" or tapered. Face length runs from the center of the hairline straight down to the chin. Small measurement errors of a few millimeters rarely change the result, but a face near a threshold (for example, a jaw ratio right at the strong/soft boundary) can flip between two adjacent shapes.
Limits and edge cases
Self-measurement introduces variability — hairline placement is subjective, and camera angle can distort a photo-based measurement. This tool also doesn't account for jaw angularity, chin shape, or facial symmetry directly; it infers a "strong" or "soft" jaw purely from the jaw-to-cheekbone width ratio. Many real faces sit between two categories, and stylists commonly treat face shape as a spectrum rather than six hard buckets. Use the result as a starting point for hairstyle, glasses, or makeup guidance — not as a precise or clinical classification.