Face Shape Calculator
Enter four facial measurements and get your face shape with a confidence score, your exact length-to-width ratio, and instant hairstyle & glasses tips — the most precise method available.
How do I calculate my face shape? Take four measurements with a soft tape: forehead width (widest point above the brows), cheekbone width (between the highest cheekbone points), jaw width (straight across the jaw corners), and face length (hairline centre to chin tip). Divide face length by the average of the three widths: a ratio of 1.5+ with even widths is oblong, 1.25–1.45 with cheekbones widest is oval, and near 1.0 is round or square depending on jaw angle. The calculator below runs the full comparison across all 7 shapes and shows a confidence score for each. No tape measure? Use the AI photo detector or the 60-second quiz instead.
How to Measure Your Face Correctly
Use a soft measuring tape in front of a mirror. Keep it level and snug — not pressed into the skin
Forehead Width
Across the widest part of your forehead, about one finger above your eyebrows, hairline edge to hairline edge.
Cheekbone Width
Between the highest points of your cheekbones, just below the outer corners of your eyes. Usually your widest measurement.
Jaw Width
Straight across the widest part of your jaw, corner to corner. Do not follow the curve of the jawline down to the chin.
Face Length
From the centre of your hairline, straight down over the nose, to the tip of your chin.
⚠️ Common mistake: measuring "jawline length" from chin to ear (some calculators ask for this). This calculator uses jaw width — the straight-line distance between your two jaw corners — because that is what the shape definitions are built on.
Face Shape Ratio Rules for All 7 Shapes
The exact thresholds this calculator uses — every result is explainable
| Face Shape | Length-to-Width Ratio | Width Pattern | Jaw Character |
|---|---|---|---|
| Oblong | 1.5 : 1 or higher | Forehead ≈ cheeks ≈ jaw (85%+ consistency) | Straight sides, soft corners |
| Oval | 1.25 – 1.45 | Cheekbones clearly widest | Gently tapered |
| Round | ≤ 1.15 | Even widths, soft curves | Rounded, no corners |
| Square | ≤ 1.25 | Jaw ≈ forehead width | Sharp, angular corners |
| Heart | 1.1 – 1.5 | Forehead ≥ 15% wider than jaw | Narrow, pointed chin |
| Diamond | 1.3 – 1.5 | Cheeks ≥ 10% wider than forehead & jaw | Narrow, pointed |
| Triangle | any | Jaw ≥ 12% wider than forehead | Widest point of the face |
Calculator vs AI Detector vs Quiz
Three free ways to find your face shape on this site — the calculator is the precision option
Face Shape Calculator
92%+ accurateFour real measurements remove camera distortion and guesswork. Shows your exact ratio and all-7 confidence scores.
You are here ↑AI Face Shape Detector
85–92% accurateUpload a photo or use your live camera. AI maps 68 landmarks on-device — your photo never leaves your browser.
Try the AI Detector →Face Shape Quiz
80–88% accurate7 visual questions, about 60 seconds. Best when you have no tape measure and no camera to hand.
Take the Quiz →How to Read Your Numbers
Two values decide almost everything, and this calculator shows you both.
Your length-to-width ratio is face length divided by the average of your three widths. It splits faces into the long group (1.4 and above: oblong, oval, and longer heart or diamond faces) and the compact group (below 1.25: round and square).
Your width pattern decides the shape inside each group. Even widths point to oblong or square. Cheekbones dominant point to oval or diamond. A wide forehead over a narrow jaw is heart. A jaw wider than the forehead is triangle.
If your top two scores are within 10 points of each other, treat both shapes' styling advice as valid for you — and check your harmony score with the golden ratio face calculator.
Measuring Tips for an Accurate Result
Small measuring errors move borderline results between shapes, so five habits matter.
1. Use a soft tape, not a ruler — faces are curved. 2. Keep the tape level against the mirror line. 3. Measure twice and average if the values differ. 4. Pull hair fully back so the hairline and jaw corners are visible. 5. Stay relaxed — clenching the jaw widens it by several millimetres.
No tape at home? A piece of string plus a ruler works: mark the string, then measure the string flat. Or skip measuring entirely with the AI photo detector.