Forehead Shape Detector
Upload a photo to find out what forehead shape you have in seconds. Our free AI forehead shape finder identifies your type across all six types of forehead shapes — Round, Square, Straight, M-Shaped, Diamond, or Oval — with personalised hairstyle and hairline tips. No sign-up, fully private.
How the Forehead Shape Detector Works
Four steps from photo to personalized hairstyle tips — all processed locally on your device.
Upload or take a photo
Upload a clear, front-facing photo or use your device camera directly in the browser. Keep your hairline and forehead fully visible.
AI maps 478 facial landmarks
MediaPipe Face Landmarker runs entirely in your browser and locates 478 precise points — including the forehead outline from brow-line to hairline — without uploading any data.
Width, taper, and curvature are measured
The analyzer measures forehead width relative to height, how the temples taper toward the top, and the curve of the hairline at the centre.
Your forehead shape is classified
Based on those measurements, your forehead is classified into one of six types: Round, Square, Straight, M-Shaped, Diamond, or Oval.
All Forehead Shapes & Types: Which One Are You?
Six distinct forehead shapes classified by width-to-height ratio, temple taper, and hairline curvature.
Round
A smooth, convex curve across the top with no flat sections or sharp corners.
- ·Side-swept fringe adds asymmetry
- ·Volume at the crown balances curve
- ·Avoid blunt curtain bangs
Square
A flat, broad plane with distinct corners where the hairline meets the temples.
- ·Soft wispy bangs soften corners
- ·Side-swept styles break the plane
- ·Avoid blunt straight-across bangs
Straight
Minimal curvature across the width — the hairline runs almost level from side to side.
- ·Textured piece-y bangs add movement
- ·Soft centre part with waves
- ·Avoid slicked-back styles
M-Shaped
A central widow's peak with the hairline receding slightly at each temple.
- ·Middle parts highlight the peak
- ·Soft fringe blended at temples
- ·Avoid pulling hair straight back
Diamond
A narrower forehead that tapers inward toward the top, widest through the mid-temple.
- ·Full rounded fringe adds width
- ·Volume at temples balances taper
- ·Avoid severe centre parts
Oval
Balanced width and height with a subtle, even curve — the most proportionate type.
- ·Most fringe styles suit this shape
- ·Soft layers enhance proportion
- ·Classic side part works well
How to Photograph Your Forehead
A good photo makes a significant difference. Follow these tips for the most accurate forehead shape result.
Face the camera directly
Look straight ahead — chin level, not tilted up or down. Even a small angle changes the measured proportions.
Relaxed, neutral expression
A neutral brow position gives the most consistent baseline for measuring forehead height and curvature.
Even, natural lighting
Soft daylight from in front is ideal. Side lighting or heavy shadows across the forehead can affect the detected outline.
Push hair away from hairline
A fringe, hair strands, or a hat covering your hairline will reduce accuracy — clear the forehead area fully.
Single face in frame
The analyzer works best with one person clearly visible. Make sure no other faces are partially in the frame.
No headwear or filters
For the most accurate reading, photograph without hats, headbands, or beauty filters that alter the hairline.
Unexpected result? Retake the photo in natural light, facing the camera directly with your hairline fully visible. Small changes in angle or hair coverage can shift the classification.
Face Shapes Guide
Explore oval, round, square, heart, diamond, oblong, and triangle face shapes
Frequently Asked Questions
Everything you need to know about forehead shapes and how the detector works.
What is a forehead shape detector?
A forehead shape detector uses AI facial landmark detection to measure the proportions of your forehead from a photo — including width-to-height ratio, temple taper, and hairline curvature — and classifies it into a named forehead shape type. The classification is paired with personalised hairstyle and hairline tips.
How many forehead shapes are there?
This tool classifies foreheads into six types: Round, Square, Straight, M-Shaped (widow's peak), Diamond, and Oval. These cover the most distinct forehead proportions. Many people's foreheads fall near the boundary of two types, and hair growth patterns can vary over time.
What hairstyle suits my forehead shape?
The ideal hairstyle depends on your forehead's width, height, and hairline curvature — softer, side-swept fringes tend to suit square or M-shaped foreheads, while rounder foreheads often benefit from volume at the crown. See the styling tips in your results for shape-specific recommendations.
What is a widow's peak?
A widow's peak is a distinctive V-shaped point in the centre of the hairline, with the hair receding slightly at each temple to form an "M" outline. It is a common, entirely natural hairline pattern often influenced by genetics.
Is my photo stored or shared?
No. All processing happens entirely in your browser using Google's MediaPipe Face Landmarker. Your photo never leaves your device and is not uploaded to any server.
How accurate is the forehead shape detection?
Accuracy depends on photo quality. A clear, well-lit, front-facing photo with your forehead and hairline fully visible will give the most reliable result. Hair, hats, or fringes covering the hairline can affect the detected outline.
What landmarks are used to measure forehead shape?
The tool uses forehead-region landmarks from the MediaPipe 478-point face mesh, including the brow-line corners, upper-temple points, and the top-centre point that approximates the hairline. Width, height, taper, and curvature are all computed relative to inter-ocular distance for consistency across camera distances.
Can forehead shape change over time?
The underlying bone structure of the forehead is largely fixed by adulthood, but the visible hairline can change with age, hair growth patterns, and hairstyle choices — which can make a forehead appear larger, smaller, rounder, or more angular.
What is the difference between a square and straight forehead?
A square forehead has a flat plane with distinct, sharp corners at the temples. A straight forehead has a similarly flat, even top but without the pronounced corner angles — the hairline curves gently rather than meeting the temples at a sharp point.
Can I use this tool for men?
Yes — forehead shape analysis applies equally to all genders. The classification types describe proportions, not style preferences, and the hairstyle tips can be adapted for any grooming context.
Does forehead shape relate to face shape?
Forehead shape is one component of overall face shape — alongside cheekbone width, jaw shape, and face length. Pairing your forehead shape with our face shapes guide gives a fuller picture for hairstyle and styling decisions.
Forehead Shapes & Types: A Complete Guide
Types of forehead shapes, how they're measured, and how to style each one
The Anatomy of Forehead Shape
Forehead shape is determined by the underlying frontal bone structure and the pattern of the hairline. The width-to-height proportion, whether the temples taper or flare, and the curvature at the centre of the hairline together create the visual impression of each recognised forehead shape.
How This Detector Works
This tool uses Google MediaPipe Face Landmarker, trained on millions of diverse faces to place 478 landmarks with sub-pixel accuracy. Forehead measurements are computed from the brow-line corners, upper-temple points, and the top-centre point of the mesh. All ratios are normalised against inter-ocular distance for consistency across camera distances. Your photo never leaves your device — all computation runs locally in your browser.
Types of Forehead Shapes at a Glance
Round forehead
Smooth convex curve, no flat sections or corners
Square forehead
Flat, broad plane with distinct temple corners
Straight forehead
Level hairline with minimal curvature
M-Shaped forehead
Central widow's peak, temples recede slightly
Diamond forehead
Narrower, tapers inward toward the top
Oval forehead
Balanced proportions, subtle even curve