What is my face shape? Four measurements settle it, and you can take them with a tape measure
You do not need an app to answer this. You need four numbers and the thresholds they are compared against, and this page gives you both so you can check the working rather than trust a verdict.
Last reviewed 3 August 20267 min readSravya

- 4
- Measurements needed
- 7
- Shapes they resolve to
- 0.04
- Between round and square
Face length, forehead, cheekbone and jaw width.
Oval, round, square, heart, diamond, oblong, triangle.
On the length ratio. That is why sites disagree.
The short version
Measure four things: the length of your face from hairline to chin, and the widths across your forehead, cheekbones and jaw. Divide the other three by the cheekbone width. If length over cheek is under 1.15 you are in round or square territory; over 1.5 and you are oblong. If your jaw is narrower than 0.8 of your cheek you are in heart or diamond; if it is over 0.95 you are in square or triangle. Everything else is the combination of those two calls.
01Take the four measurements
Pull your hair fully back, face a mirror in even light, and use a soft tape. Write the numbers down before you do any dividing, because the temptation to round towards the shape you were hoping for is real and it is what makes home measurement unreliable.
- 1Face length: hairline to the bottom of the chin, straight down the centre.
- 2Forehead: the widest point across, usually about halfway between your brows and your hairline.
- 3Cheekbones: the widest point of your face, from the top of one cheekbone across to the other.
- 4Jaw: from the corner of your jaw below one ear to the other, following the bone rather than the soft tissue.
Ratios rather than raw centimetres, because a big head and a small head with the same proportions are the same shape, and any tool quoting you a shape from raw measurements alone is doing it wrong.
02Read the numbers against the thresholds
| Shape | Length ÷ cheek | Forehead ÷ cheek | Jaw ÷ cheek |
|---|---|---|---|
| Oval | 1.38 | 0.92 | 0.82 |
| Round | 1.06 | 0.90 | 0.88 |
| Square | 1.10 | 0.96 | 0.97 |
| Heart | 1.22 | 1.00 | 0.72 |
| Diamond | 1.27 | 0.78 | 0.74 |
| Oblong | 1.58 | 0.90 | 0.84 |
| Triangle | 1.16 | 0.78 | 1.02 |
These are editorial centres for a repeatable comparison, not anthropometric norms. Landing a few hundredths from a figure means nothing. Landing a long way from one is what decides it.
Find the row your three numbers sit closest to overall, not the row that matches one number best. A face that matches oblong on length and triangle on jaw is neither: it is somewhere between, and the honest answer is to say so and take the advice for both.
Where the seven shapes actually sit
measured ratiosRound and square sit 0.04 apart on length and 0.09 apart on jaw. That is the entire difference between them, and it is why two sites can give you two different answers from the same face. Ours shows you where you landed rather than only what it decided.
03Why two websites give you two different answers
Because the shapes are not seven separate things. They are seven positions on two continuous measurements, and several of them sit very close together. Round and square are 0.04 apart on length and 0.09 apart on jaw. A couple of millimetres of tape, or a slightly tilted head in a photograph, moves you across the line.
Most sites hide that. They return one word and no numbers, so when a second site returns a different word there is nothing to compare and no way to tell which was closer. The fix is not a better algorithm, it is showing the figures and the gap to the runner up.
If your jaw and cheekbones are within two percent of each other, you should be told that, because it means the label could go either way.
04The mistakes that produce a wrong answer
- Measuring the jaw across the soft tissue rather than along the bone. This is the single most common error and it pushes almost everyone towards square.
- Measuring face length from the top of the head rather than the hairline. It adds several centimetres and turns ovals into oblongs.
- Taking the photograph from above. A phone held higher than eye level foreshortens the face and shortens the length ratio.
- Leaving hair over the temples. It hides the forehead width, which is the measurement that separates heart from diamond.
Common questions
Sources
Every figure quoted above is listed here with what it was used for and when the source was last checked. Anything not attributed to a source is this site’s own reading and is labelled as such where it appears.
Matrix
How to choose the best hairstyle for your face shapeStylist commentary on which cuts are recommended against each face shape, cross checked against the balance reasoning used here.
Last checked 31 July 2026
Check it against your own measurements
The tool does the same four divisions this page describes, from one photograph, and shows you every figure alongside the shape it decided. If the runner up came close it says so instead of pretending the call was clean.
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