What Is My Face Shape? The 7 Shapes, Explained & Measured
Your face shape is the geometry of your outline, reduced to three numbers: face length ÷ width, jaw width ÷ cheekbone width, and forehead width ÷ cheekbone width. Those three ratios sort every face into one of seven shapes: oval, round, square, oblong, heart, diamond or triangle. The free face shape detector reads all three from one photo and shows how closely you match each shape.
Key takeaway: Face shape is a styling map, not a score. No shape is more attractive than another, many faces sit between two shapes, and the most reliable way to change it is to change the photo, not the face.
How Do I Check My Face Shape? The 60-Second Method
With a mirror or a photo:
- Pull your hair fully off your forehead, then take a straight-on photo at eye level from at least arm's length, with a neutral expression and your mouth closed.
- Compare length vs width: is your face clearly longer than it is wide, roughly as long as it is wide, or in between?
- Compare jaw vs cheekbones: is your jaw almost as wide as your cheekbones (square), or clearly narrower (tapered)?
- Compare forehead vs jaw: which one is wider? A wide forehead with a narrow jaw points to heart, and the reverse points to triangle.
Where eyeballing breaks down: most faces are not obviously any one shape. The difference between round and oval, or square and oblong, is a few percent of face width, which the eye cannot judge reliably. A close selfie also widens the middle of the face. The face shape detector measures all three ratios from 478 landmarks, applies fixed cut points, and flags a borderline result when you sit near a cut point.
Here is the same engine run on a sample portrait. The face length vs width and jaw width readings below are the inputs the shape classifier uses. The full engine classifies this sample's outline as Round, borderline, which means it sits near a cut point and should be read together with the neighboring shape:
Preparing the example study — it measures itself as you reach it…
The 7 Face Shapes and Their Cut Points
| Shape | Signature | Rule of thumb |
|---|---|---|
| Oblong | Length clearly beats width | Face index ≥ 1.35 |
| Round | Length close to width, soft jaw | Face index ≤ 1.15 |
| Square | Jaw nearly as wide as cheekbones | Jaw ratio ≥ 0.92 |
| Heart | Wide forehead, tapered jaw | Forehead − jaw ≥ 0.14 |
| Diamond | Cheekbones widest, forehead and jaw both narrow | Forehead ≤ 0.80 and jaw ≤ 0.84 |
| Triangle | Jaw widest, forehead narrowest | Jaw − forehead ≥ 0.10 |
| Oval | None of the above | Everything else |
Face index = face length ÷ cheekbone width; jaw and forehead ratios are divided by cheekbone width. These are the detector's working cut points, not anatomical laws.
What each shape means for styling:
- Oval — the reference most style advice assumes. Most cuts and frames work.
- Round — styles that add angles and height balance a short, soft outline.
- Square — softer, rounded shapes balance a strong jaw.
- Oblong — add width at the sides and avoid extra height on top.
- Heart — add volume below the cheekbones to balance a narrow chin.
- Diamond — show the forehead and add width at the hairline.
- Triangle — add volume above the jaw to balance a wide lower face.
Is an Oval Face Actually the "Ideal" Shape?
Styling guides often describe oval as the "ideal" face. The evidence does not support ranking shapes:
- What research supports: attractiveness ratings are driven mainly by averageness, symmetry and sexual dimorphism (Rhodes 2006), not by which outline bucket a face falls into.
- Why oval gets called ideal: it is the bucket left over when no ratio is extreme, so it sits near the average outline. "Close to average" helps attractiveness, but that is averageness at work, not oval-ness.
- What it means in practice: shape tells you where to add or remove visual weight. It does not tell you how attractive you are.
What Determines Your Face Shape?
- Bone — cheekbone (bizygomatic) width, jaw-angle (bigonial) width and skull height set the base outline. In adults, these do not change on their own.
- Soft tissue — cheek and jaw fat fill out the lower face. Facial fat is visible and tracks body fat (Coetzee et al. 2009), which is why weight changes can move a borderline reading.
- Hair — the hairline sets the top of the face and the width of the forehead. Hair over the forehead hides the very edge the classifier needs.
- The photo — photos of the same person vary a lot (Jenkins et al. 2011). Close-range selfies distort the center of the face (Ward et al. 2018), and a turned head shortens the measured width.
Can You Change Your Face Shape? Every Option, Ranked Honestly
Haircut and styling · Perceived only
Volume at the sides makes a face look wider, and height on top makes it look longer. Verdict: the biggest, cheapest lever. It changes how the outline looks, not the measurement.
Beard shaping · Perceived only
A fuller chin beard lengthens a round face, and fuller sides square off a heart-shaped face. Verdict: works well for those who can grow one, and it is fully reversible.
Losing body fat · Real change
Less facial fat narrows the cheeks and jaw. Verdict: a real change to soft tissue that can move a borderline round reading toward oval. It cannot change bone width.
Jaw exercises, mewing, gum chewing · Skip
No controlled evidence shows these widen or narrow adult bone. Heavy chewing mainly builds the masseter muscle and can strain the jaw joint. Verdict: skip it for face-shape purposes.
Fillers and masseter Botox · Medical
Filler can add width at the jaw or chin, and Botox can slim an enlarged masseter. Verdict: a medical procedure with medical risks, and the results are temporary. This is a decision for a licensed clinician.
Jaw or cheekbone surgery · Medical
Osteotomies and implants change bone width. Verdict: the only route to a real change in bone width, with major cost and recovery. It is a decision for a surgeon, never a styling site.
A Reality Check Before You Obsess Over Your Face Shape
Most faces do not fit one shape cleanly. The seven names are buckets drawn over continuous ratios, and the detector's cut points are conventions, not biology. Use your result to pick a haircut, frames or a beard length, then stop. If your shape changes between photos, the photo changed, not you. A ruler measures; it does not judge.
References
Farkas LG. Anthropometry of the Head and Face. 2nd ed. New York: Raven Press; 1994 — the anthropometric norms for face length, cheekbone, jaw and forehead widths behind the outline ratios.
Coetzee V, Perrett DI, Stephen ID. Facial adiposity: a cue to health? Perception. 2009;38(11):1700–1711. doi:10.1068/p6423 — facial fat is visible and tracks body fat.
Jenkins R, White D, Van Montfort X, Burton AM. Variability in photos of the same face. Cognition. 2011;121(3):313–323. doi:10.1016/j.cognition.2011.08.001 — photos of the same person vary more than most people expect.
Ward B, Ward M, Fried O, Paskhover B. Nasal distortion in short-distance photographs: the selfie effect. JAMA Facial Plastic Surgery. 2018;20(4):333–335. doi:10.1001/jamafacial.2018.0009 — close-range photos distort central facial proportions.
Kartynnik Y, Ablavatski A, Grishchenko I, Grundmann M. Real-time facial surface geometry from monocular video on mobile GPUs. 2019. arXiv:1907.06724 — the 468-point face mesh the detector measures from.
Stop guessing — measure your face shape
One photo, on your device, no sign-up — your shape, your match for all 7 shapes, and the three ratios behind it.
Find my face shape freeMeasure it, then decide
- Face shape detector — your shape and the 7-shape match ranking, on your device
- Facial ratios calculator — jaw width, face height-to-width and five more ratios
- What are facial ratios? — what each ratio means and which ones matter
- What is the golden ratio face? — why 1.618 is not how real faces measure
- How is attractiveness rated 1–10? — shape vs score, explained
- Methodology — every reference value and weight we use