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How Do I Find Out My Facial Shape? (Step-by-Step)
To determine your face shape manually, you need to measure the width of four key facial features: your forehead, cheekbones, jawline, and face length.
Forehead: Measure across the widest part of your forehead.
Cheekbones: Measure from the sharpest point of one cheekbone to the other.
Jawline: Measure from the tip of your chin to below your ear, then multiply by two.
Face Length: Measure from the center of your hairline to the tip of your chin.
Compare these measurements. For example, if your face length and width are roughly equal, you likely have a Round or Square face. If your face is longer than it is wide, it may be Oval or Oblong.
The 6 Common Face Shapes
Oval:
Face length is greater than the width of the cheekbones, and the forehead is wider than the jawline. The jawline is rounded.
Round:
Face dimensions are about the same for length and width. No sharp angles on the jaw.
Square:
Forehead, cheekbones, and jawline are all about the same width. The jawline is sharp and defined.
Heart:
Forehead is wider than the cheekbones and jawline. The chin is pointed (like an inverted triangle).
Diamond:
Face is widest at the cheekbones, with a narrow forehead and jawline.
Rectangle (Oblong):
Face is noticeably longer than it is wide, with a strong, square jaw.
AI tools map these proportions automatically through facial landmark detection — no manual measurements needed.
Is There a Faster Way? (Try AI Face Shape Detector)
Measuring your face with a tape measure is prone to error. A slight miscalculation in jaw width can confuse a "Square" face with a "Rectangle" one.
The result isn’t just a label like “oval” or “square.” Instead, you get data: numerical facial proportions that beauty brands can plug into virtual try-on or recommendation engines.
Why use an AI Face Shape Detector instead? Perfect Corp's AI Face Analyzer eliminates the need for manual measuring. It uses advanced algorithms to map 80+ facial landmarks in real-time via your camera.
Accuracy: Clinical-grade precision vs. rough manual estimates.
Speed: Get results in < 2 seconds.
Insight: AI doesn't just give you a shape; it provides detailed ratios (e.g., eye-to-cheekbone ratio) for personalized makeup and eyewear recommendations.
Why Face Shape Still Matters in 2026
Face shape is a timeless foundation for beauty and styling.
Imagine knowing exactly which highlighter suits your face shape or which eyeshadow works best for your eye shape, all before you even buy any makeup.
Or know what type of frames to buy before browsing for glasses.
Or perhaps seeing what you would look like after Botox before even visiting a medical aesthetics clinic.
This is what AI can do now.
Perfect Corp’s AI Face Analyzer lets both consumers and professionals analyze facial dimensions with precision. It’s the bridge between beauty and data science.
Consumer Experience: “Which Look Fits My Face?”
For consumers, AI analysis helps them explore beauty more confidently. They can upload a selfie, discover their face shape, and instantly receive hairstyle or makeup recommendations personalized to their unique proportions.
Why Leading Brands Are Investing in AI Face Analyzer API
Precise Facial Ratio and Feature Detection
The AI Face Analyzer API identifies 11 key facial ratios — including face aspect, eye width, eyebrow position, nose proportion, and lip ratio — delivering detailed and scientifically backed measurements.
Unified API Logic for Effortless Integration
All API endpoints follow a consistent input and output logic, making integration smooth across websites, apps systems.
With RESTful architecture, developers can easily customize and scale the solution to match business needs.
Designed for Beauty, Eyewear, and Aesthetic Use Cases
From virtual makeup and hairstyle trials to eyewear fitting and medical aesthetic ratio analysis, the Face Analyzer API delivers real-time, smooth try-ons experience. Try yourself, you'll be impressed.
Try face analysis online for free →
Book a demo to explore Perfect Corp’s Face Analyzer API →
FAQ
How accurate is AI face-shape detection?
It’s highly accurate when trained on large, diverse datasets like Perfect Corp’s — typically above 95% precision for classification.
Does AI analyze other facial ratios?
Yes, including philtrum length, eye distance, and jaw proportions, enabling deeper aesthetic and product insights.
Can brands integrate the API into their website?
Yes — integration is possible with only a few API calls and can be customized for any digital experience.
Is user data stored?
No. Images are processed only for analysis and will be deleted afterwards, ensuring GDPR compliance.
How do I find out my facial shape?
To find out your facial shape, measure the width of your forehead, cheekbones, and jawline, and compare them to your face length. If the length and width are equal, you likely have a round or square face. If the face is longer than it is wide, it is oval or oblong. Alternatively, you can use an AI Face Shape Detector for instant, accurate analysis.
