Why do two websites give me two different face shapes?

Usually because they draw the boundary in different places, and often because they are comparing different measurements. The categories are a styling convention rather than a fact, so two sources can disagree while both being internally consistent. The thresholds this site uses are published on this page and in every guide, which at least makes the disagreement checkable.

Which measurement should I take first?

Face length divided by cheekbone width, because it splits the seven into groups faster than anything else. Under about 1.15 the face is roughly as wide as it is long, which puts you in round or square territory. Over about 1.5 it is distinctly long, which is oblong. Everything else sits in the middle and is then decided by the jaw or the forehead.

Does it matter if I am between two shapes?

Less than the categories imply. The advice for two adjacent shapes overlaps substantially, because they share most of their proportions. Being between them means you have more options than someone sitting squarely in one, not fewer.

Stuck between two face shapes? Each pair is settled by one measurement, and it is a different one every time

Almost nobody is unsure between all seven shapes. People are unsure between two, and the pair tells you which single measurement to take. The published gaps are on this page so the comparison can be checked rather than trusted.

Last reviewed 11 August 20266 min readSravya

Editorial portrait showing a jawline at the point that separates round from square

The figures

0.09
Jaw gap between round and square: 0.20
Length gap between oval and oblong: 0.22
Forehead gap between heart and diamond

The short version

Take the pair you are stuck between and measure the one thing that separates them. Round against square is the jaw, and nothing else: their length figures sit 0.04 apart, which is inside anyone's measuring error, while their jaws differ by 0.09. Oval against oblong is length, and only length: 0.20 apart there, against 0.02 and 0.02 on the two widths. Heart against diamond is the forehead: 0.22 apart, while their jaws differ by 0.02. Measuring the wrong one of the three is the reason a second opinion so often disagrees with the first.

01The three pairs, and the number that separates each

These are the centres this site scores against, published so a reader can check the comparison rather than take it on trust. What matters in each row is not the values themselves but which column has the wide gap.

Where each pair actually differs

Pair	Length gap	Forehead gap	Jaw gap	What to measure
Round vs square	0.04	0.06	0.09	The jaw
Oval vs oblong	0.20	0.02	0.02	Face length
Heart vs diamond	0.05	0.22	0.02	The forehead

Read across each row and take the largest number. Every other measurement in that row is noise for that particular decision, and measuring it will make you less certain rather than more.

02Round or square: measure the jaw

Both are faces about as wide as they are long. Their length figures are 1.06 and 1.10, a difference of 0.04, which no home measurement can resolve. Trying to decide by looking at overall length is why this pair is the most commonly confused of the seven.

The jaw settles it. A round face sits near 0.88 of cheekbone width and a square face near 0.97, so a square jaw is close to as wide as the cheekbones while a round one is noticeably narrower. Measure from one jaw corner to the other, below the ears, following the bone rather than the soft line of the neck.

03Oval or oblong: measure the length

This pair is the opposite case. The widths are nearly identical: forehead figures 0.02 apart and jaws 0.02 apart, both far too close to separate anything. Only length differs, and it differs a great deal, 0.20 between centres of 1.38 and 1.58.

So the only useful measurement is hairline to chin, divided by cheekbone width. The trap is the hairline. A hairline that has moved back adds length that is not structural and pushes an oval reading towards oblong, which then produces advice for a longer face than the one you have. Measure from where the forehead begins to curve back rather than from where hair currently starts.

04Heart or diamond: measure the forehead

Both taper to a narrow chin, and their jaw figures are only 0.02 apart, so the tapering tells you nothing about which one you are. The upper face is the whole difference: a heart sits near 1.00 of cheekbone width and a diamond near 0.78, a gap of 0.22, which is the widest separation of any pair on this page.

In practice that means a heart shaped face is widest at the brow and a diamond is widest at the cheekbones, with the brow noticeably narrower. Hair worn over the temples hides exactly the measurement that decides it, which is why this pair is so often called wrong from a photograph.

05When the honest answer is both

Sometimes the deciding measurement lands between the two centres, and no amount of remeasuring will fix that, because the boundary is a convention rather than a fact about the face. That is a real outcome and not a failure of the tape.

Read both sets of advice. Between two adjacent shapes the recommendations overlap more than they conflict, and the difference is usually one decision rather than a different approach.
Where they do conflict, the pair tells you which way to lean. Between round and square, a softer finish suits the round reading and a blunter one suits the square.
A tool that never says a result was close is not being more accurate than one that does. It is declining to tell you something it knows.

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.

All Things Hair
How Do I Determine My Face Shape?
The convention that adjacent face shapes are distinguished by a single dominant feature rather than by overall impression.
Last checked 31 July 2026

Check it against your own measurements

The tool reports every ratio and how strongly each of the seven shapes matched, so a close call between two of them is visible rather than hidden behind a single word. That is the case this page is about.

Let it take all three measurements