Beard Length by Face Shape, in Guard Numbers

The right beard length for your face shape is three lengths, not one. Your cheeks, your jaw and your chin each get their own number, and the face shape decides which of the three is longest. A round face wants the chin longest and the cheeks short. An oblong face wants the opposite: fuller cheeks, a short chin. Get that order right and the actual guard numbers are a matter of taste.

Beard length by face shape, zone by zone

These are the numbers we start from in the chair. They are clipper guards: a 1 leaves about 3mm, a 2 about 6mm, a 3 about 9.5mm, a 4 about 13mm. "Scissors" means past the point where a guard is useful, held and cut by hand.

Face shape	Cheeks	Jaw	Chin	What the beard is doing
Round	1 to 2	2 to 3	Longest, scissors	Moving the weight down so the face reads longer
Square	2	2, tighter at the corners	A little longer, rounded	Taking the corner off the jaw
Oblong	3 to 4	3	Short, no longer than the jaw	Adding width, keeping length off
Oval	Even, any length	Even	Even, or a touch longer	Not correcting anything
Heart (wide forehead, narrow chin)	2	3 to 4	Fuller, longer	Putting width low to balance the top
Diamond (wide cheekbones, narrow chin)	1	3	Fuller, longer	Keeping the cheekbones quiet, building the chin

Two things this table does not show. The step between zones matters more than the numbers themselves, and a single guard of difference is usually enough. And none of it works with the neckline in the wrong place. If yours sits on the jawbone, every row above gives you a chinstrap with ambitions. Where the neckline actually goes is the first fix, before any of this.

Your beard has already changed your face shape

This is the bit every face shape chart skips. If you have had a beard for a year, the face you see in the mirror is partly the beard. Grown evenly all round, most beards have drawn a round face on whoever is wearing them. Trimmed boxy, they draw a square one. So men measure the outline, decide they are round, and choose a beard to fix a shape the last beard made.

Judge it from the parts a beard does not touch. Your forehead and your cheekbones are where they always were: compare those widths in the mirror, then look at how long the face is from hairline to the bottom of the beard. For the jaw itself, find a photo of yourself clean shaven, or press a comb flat into the beard along the jawline and feel where the bone turns towards the chin. Some men find a jaw they forgot they had. Some find out the beard has been doing more work than they thought.

When we cannot tell, we cut the cheeks one guard shorter first and look. That alone tells us most of what we need to know, and it is reversible in a fortnight.

Round and oblong: the same mistake in opposite directions

A round face and an oblong face go wrong in mirror images, and both come from letting the beard grow the way it wants to.

On a round face the cheeks fill in fastest and widest, so a beard left to itself gets broad at the sides. That is the exact width you were trying to lose. Keep the cheeks at a 1 or a 2 and let the chin go, and the face lengthens. We have written about the haircut half of a round face, and the beard is often the bigger lever of the two.

On an oblong face the danger is length at the chin. A long, pointed beard on a long face adds to the one measurement you have plenty of. The beard that suits an oblong face is fuller at the cheeks and jaw, a 3 or a 4, with the chin cut back to the same length or shorter. It looks almost square on its own, which is the point.

Your growth decides before your face does

A table can say "fuller cheeks". It cannot make your cheeks grow.

If your cheeks come in thin, a 4 there will show skin through it and look thinner than a 1 would. A man with an oblong face and sparse cheeks is better off with a short, even beard than chasing width he does not have. The same goes for a chin that grows slow or splits in the middle: you cannot build a long chin on a heart-shaped face if the hair there will not come forward. We go through each kind of patchy growth and what to cut for it separately, and it overrides anything in the chart above.

Growth direction matters too. Hair that grows sideways off the jaw adds width whatever guard is on, so on a round face we sometimes go a number shorter there than the table says.

Growing towards the shape you want

The chin is the slowest zone to get right, because it is the one you have to wait for. The cheeks and jaw can be cut to their number on the day. The chin cannot be cut longer.

So if you are moving to a shape with a longer chin, the order is: keep the cheeks and jaw at their number every two to three weeks, and leave the chin alone completely until it has passed where you want it. Then we take it back and shape it. Men who trim the whole beard evenly while they wait end up exactly where they started.

Holding the cheeks while the chin grows is most of what a beard trim does for a man in this stage. It is £11 on its own for fifteen minutes, and £24 if you add it to a haircut.

Come in with more chin than you think you need. We can always take length away and round it off. Nobody behind a chair can give it back, and a chin cut a week too early sets you back weeks. If you are not sure which row of the table is yours, book a trim and say so before we start. Tell us the shape you want the beard to make, not the length, and we will put the numbers to it.