Face Shape Calculator
A face shape calculator uses four simple measurements – forehead width, cheekbone width, jawline width and face length – to tell you whether your face is oval, round, square, heart, diamond, triangle or oblong. It replaces the guesswork of a face shape quiz with numbers, then shows hairstyles, glasses frames and beard styles that usually suit your shape.
Use the calculator above for your own numbers. Below, we explain how the Face Shape calculator works, with worked examples and sources.
How to measure your face
Pull your hair back, stand square to a mirror in good light and use a soft tailor's tape. Keep the tape flat against the skin and take each measurement twice.
- Forehead: measure straight across the widest part, roughly halfway between eyebrows and hairline.
- Cheekbones: find the bony point just below the outer corner of each eye and measure across.
- Jawline: measure from just below one ear, at the jaw angle, to the chin, then double it – or measure straight across between the two jaw angles; use the same method every time.
- Face length: measure from the centre of the hairline straight down to the tip of the chin. If your hairline is receding, start where it used to be or at the top of the forehead.
No tape measure? The photo method
Take a straight-on photo at arm's length with hair pulled back, then measure the four distances on screen with a ruler. Because the calculator uses ratios, the units do not matter as long as they are the same for every measurement. Keep the camera level with your eyes: tilting it up or down distorts length.
The 7 face shapes
| Shape | What the numbers look like | What you see |
|---|---|---|
| Oval | Length about 1.3–1.5 × cheekbones; jaw narrower than forehead | Balanced, gently rounded chin |
| Round | Length close to width; rounded jaw | Soft curves, full cheeks |
| Square | Length close to width; forehead, cheeks and jaw similar | Strong, angular jaw |
| Oblong | Length 1.5 × cheekbones or more; widths similar | Long, straight sides |
| Heart | Forehead widest; jaw clearly narrower | Pointed or narrow chin |
| Diamond | Cheekbones clearly widest; forehead and jaw narrow | High, prominent cheekbones |
| Triangle | Jaw widest | Narrower forehead, broad jaw |
There is no scientific standard for face shapes – they are styling categories. Different sites use slightly different cut-offs, which is why this page shows the exact rules the calculator uses, so you can check the result yourself.
Worked example
Forehead 13 cm, cheekbones 14 cm, jaw 11 cm and face length 19 cm. Length ÷ cheekbones = 1.36, so the face is longer than it is wide but not long enough for oblong. The jaw (11 cm) is narrower than the forehead and cheeks, the cheekbones are less than 10% wider than the forehead, and the forehead is not wide enough relative to the cheeks for heart. Result: Oval.
Best hairstyles, glasses and beards for each face shape
| Shape | Hair ideas | Glasses frames | Beard / brows |
|---|---|---|---|
| Oval | Most styles; try a blunt fringe or side part to change things up | Most frames; wide geometric styles | Most beard styles; keep brows natural |
| Round | Height on top, long layers, side parts | Rectangular or angular frames | Beard longer at the chin to add length |
| Square | Soft waves, textured layers, side-swept fringes | Round or oval frames | Rounded beard edges; softly arched brows |
| Oblong | Volume at the sides, fringes, chin-to-shoulder lengths | Deep frames with strong top lines | Fuller sides, shorter chin; straighter brows |
| Heart | Chin-length bobs, side-swept fringes, volume at the jaw | Bottom-heavy, rimless or light frames | Fuller beard at the chin to balance the forehead |
| Diamond | Fringes, pieces around the forehead and jaw | Oval or cat-eye frames, rimless | Fuller chin beard; keep sides short |
| Triangle | Volume at the crown and temples | Frames wider at the top, browline styles | Keep jaw beard short and tidy |
These are starting points, not rules. Hair texture, lifestyle and personal taste matter as much as face shape.
What if you fall between two shapes?
It is common for two measurements to be almost identical, and many faces mix two shapes. The calculator shows the runner-up when a rule is within a few percent. Use the jaw outline as the tie-breaker – a soft jaw usually points to oval or round, a sharp one to square or diamond – and borrow styling ideas from both shapes.
Common measuring mistakes
- Measuring the forehead too low, at the brow bone, which makes it look narrower than it is.
- Pulling the tape tight across the cheeks – it should rest on the skin, not press in.
- Measuring jaw width at the chin instead of at the jaw angles below the ears.
- Including hair volume or a beard in the measurements – measure the bone structure underneath.
- Using a curved tape for some measurements and a straight ruler for others; stick to one method.
Using your result: glasses frames in more detail
The usual rule for eyewear is contrast: angular frames add structure to softer faces, and rounded frames soften angular ones. Frame width should roughly match the widest part of your face, and the top of the frame should follow your brow line rather than sit far above or below it. For faces with a narrow chin, such as heart and diamond, frames that are wider at the bottom or have light, rimless lower edges help balance the shape. These suggestions are a starting point – try a few styles on, because colour, frame thickness and your features matter too.
Face shape and hairstyles: practical tips
Bring your result and two or three photos of styles you like to your hairdresser or barber. Ask how a style will work with your hair texture and parting – curly, wavy and straight hair behave very differently at the same length. For round and square faces, length past the jaw and asymmetry tend to lengthen the face; for oblong faces, width at the sides and a fringe tend to shorten it.
For styling inspiration only. Last reviewed: .

Written & built by
Zeeshan Nawaz
Calculator Developer · Tuff Search
Builds and tests Tuff Search calculators, turning official tax tables and published formulas into tools anyone can check.
FAQ
Frequently asked questions
Quick answers about the Face Shape calculator.
Measure your forehead, cheekbones, jaw and face length and enter them above. The calculator compares the ratios and returns the closest of the seven shapes.
There are seven commonly recognised face shapes: oval, round, oblong, square, triangle, diamond and heart. Some guides also add 'rectangle' (an angular oblong) or 'pear' (another name for triangle).
You can trace your outline on a mirror with lipstick or soap and compare it with the shapes, but measuring is more reliable because it removes guesswork about which width is largest.
It can. Weight change, ageing and changes in muscle and fat around the jaw and cheeks can shift your proportions, so re-measure every few years.
Yes. It uses proportions, which work the same way for everyone. The styling tips include beard suggestions for men.
Both are longer than they are wide. Oval faces taper gently toward the chin; oblong faces are longer still, with forehead, cheeks and jaw of similar width.
Oval is often described as the most common and most versatile, but there is no reliable population data – most faces combine features of two shapes.
Still have a question? Email support@tuffsearch.com
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