Measure your forehead ratio — the share of face height between your hairline and your brow — against the classical 30–36% thirds band.
A measurement of how the forehead reads in a photo, not a verdict on a person. Hairstyle, hairline position, and camera angle all move the number.
Measure it: hairline to brow, divided by hairline to chin. In classical facial-thirds analysis the forehead spans roughly 30–36% of face height; above that band it typically reads as tall in photos. It is a proportion read on one photo — hairstyle and camera angle move it — not a verdict.
17 metrics · Free · No signup
Free · No signup · The calculator and scan are right below
Open a straight-on photo (camera at eye level), zoom in, and measure two vertical distances in any consistent unit — screen millimeters with a ruler works. The result is the share of your face height your forehead occupies as read in that photo.
Under 30%. Below the classical band. Usually described as a low hairline or short forehead. Population-descriptive: plenty of faces sit here; it is a proportion, not a problem.
30–36%. The classical facial-thirds reference band — the forehead at roughly one third of face height. Faces described as having “balanced thirds” typically measure in this range.
36–40%. Above the band. This is the range that usually gets called a “tall” or “big” forehead in photos. Framing (fringe, part, brow fullness) changes the read substantially.
Over 40%. Reads as distinctly tall. Verify the measurement first — camera above eye level, hair pulled tightly back, or a receding hairline all inflate the number.
These bands describe how proportions typically get read; none of them is a verdict. A big forehead is not unattractive — preference varies, and many widely admired faces measure above the band.
The photo scan reads 68 facial landmarks. Honest mechanics: that landmark set has no hairline point, so the scan cannot see your forehead height — that is what the calculator above is for. What it can measure precisely is the balance of the two thirds that do have landmarks: the middle third (brow line to nose base) and the lower third (nose base to chin). If your forehead reads tall, this tells you whether the rest of your face amplifies or offsets that read.
Upload a front-facing photo to get your score
Photos are processed for the scan and not stored. Want the full picture? Get your free Face Score — 17 measurements from one photo.
Near-horizontal line across the forehead. Reads as defined and balanced. Most common in adolescent and young-adult faces; can shift with age.
Gentle convex curve. Common feminine-coded hairline. Pairs well with most cuts. Hairstyle goal is usually to maintain visible boundary rather than hide it.
Central downward point. Genetic, present from birth or adolescence. Reads as distinctive. Can be styled with center part or fringe depending on the face shape.
Front-corner recession on both sides. Usually a sign of progressive recession. Pharmacological intervention (finasteride, minoxidil) can slow or partially reverse early stages.
One side measurably higher than the other. Most common cause is hair growth pattern; some asymmetry is normal. Hairstyle goal is usually to balance with a side part on the higher side.
Hairstyle. The single largest free lever. A fringe, forward texture, or a different part changes where the visible hairline boundary sits — measure your own photo with and without the fringe and the ratio itself moves. The right cut for a forehead above the band is different from the right cut for one inside it.
Brow shaping. The brow defines the lower boundary of the forehead. A higher, thinner brow line increases visible forehead height; a fuller, lower brow line reduces it. This is the second free lever, and it works on the same boundary the ratio is measured from.
Recession reversal. If the hairline is M-shaped or has progressed beyond the published reference, evidence-based treatments (finasteride, minoxidil, low-level laser therapy, PRP) can slow or partially reverse early-stage recession over 6 to 12 months. The recession reversal lowers the hairline measurably and reduces the height ratio.
Your forehead is one proportion. The report covers seventeen.
$14.99 unlocks the full 17-metric PDF: exact scores with tiers for every measurable metric — thirds balance, midface ratio, jawline, symmetry and more — plus improvement tips per metric.
Free, instant, private. Thirds balance plus 16 more measurable metrics from one photo.
17 metrics · Photos auto-deleted · Re-scan as often as you want
All free. All private. All instant.
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Hairstyle and hairline care are the real levers on perceived forehead ratio.
Sun Bum Sea Spray
Check price →Sun Bum
★ 4.4Texture and volume change how your hair frames the face in photos — a styling/grooming lever, not a change to your proportions.
Results in immediateHanz de Fuko Claymation Hair Styling Clay
Check price →Hanz de Fuko
★ 4.5Height and volume on top change how a wider face reads in photos — the fastest hairstyle/grooming lever, with no change to your actual proportions.
Results in immediate540 Titanium Microneedle Beard Derma Roller
Check price →Titanium Derma Roller
★ 4.3Supports fuller, more even beard fill in patchy areas (best paired with minoxidil) — a grooming lever. A fuller beard can be styled to frame the jaw in photos.
Results in 8-12 weeksCurated based on facial analysis data. No photos collected. Affiliate links — we earn a small commission at no extra cost to you.
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