How to Sew On a Button by Hand: Flat and Shank Buttons

Somewhere in most wardrobes there is a coat, a shirt or a pair of trousers that has stopped being worn over one missing button. It is the smallest repair in all of sewing and the one most often abandoned, and it needs exactly three things: a needle, a reel of thread and a pair of scissors. No machine. No table. No sewing room. Ten minutes on the sofa with the telly on.

It is also the first skill in Level 0 of The Pattern — Curious — because a button teaches the whole grammar of hand sewing in miniature:

1. Anchor the thread without leaving a lump.
2. Keep the tension even.
3. Finish so it holds.

Once those three things are in your hands, a fallen hem and a split seam stop looking like professional work.

What you actually need

• A needle. Any general hand-sewing needle from a mixed pack will do. A slightly thicker one is easier to hold and easier to push through a coat.
• Thread. All-purpose polyester, used doubled. More on that below.
• Scissors. Small and genuinely sharp. Kitchen scissors chew thread rather than cutting it, which leaves a frayed end you will fight to get through the needle eye. A proper pair from the fabric scissors category is a lifetime tool, and a small snipper lives happily in a drawer.

That is the entire kit. If you are removing an old button rather than replacing a lost one, a seam ripper makes it a ten-second job instead of a nervous poke with scissors.

Choosing thread (this is most of the job)

Use all-purpose polyester, the ordinary reel sold everywhere. Polyester has a little give, so it survives the tug of a button being fastened; cotton thread is lovely for quilting and snaps sooner under that kind of repeated strain.

• Colour: match the button rather than the fabric if you have to choose — the stitches sit on the button, not on the cloth.
• If you own nothing: a mid-grey and a navy will disappear on more garments than black does.
• How much: the thread category covers what a starter set looks like, but a single reel is enough for this.

Then use it doubled

Cut a length about as long as your forearm, thread it through the needle, and pull the two ends level so you are sewing with two strands at once. Doubled thread is twice as strong, halves the number of passes you make, and is the single reason a hand-sewn button often outlasts the factory one.

Read the button before you start

Look at the underside. There are two kinds.

The difference matters because of thickness. A button has to sit far enough off the fabric that the buttonhole layer can slide underneath it and lie flat. On a shirt the fabric is thin and the button can sit almost flush. On a coat it cannot — which is what the thread shank further down solves.

Anchoring without a knot lump

A knot on the underside of a shirt front is scratchy, visible, and the first thing to pull through the weave. There is a better start, and it takes no longer.

1. Thread the needle and pull the ends level, but do not knot them.
2. From the top side, take one small stitch — about as wide as a grain of rice — exactly where the button will sit. Pull until a short tail is left underneath.
3. Take a second stitch across the first, forming a tiny X. That X is your anchor.
4. Bring the needle up through the fabric where the first buttonhole will sit, and trim the loose tail flush.

The button itself covers the X entirely. If you prefer a knot, tie a small one and start from the underside — it works, it is just slightly less tidy.

Sewing a flat button, step by step

1. Position it. Do the garment up and mark where the button needs to land, using the buttonhole as your guide. A pin or a pencil dot is plenty. Buttons sewn by eye drift, and a drifted button pulls the whole front crooked.
2. Bring the needle up through the fabric and through one hole in the button, from underneath.
3. Go back down through the second hole and through the fabric. That is one stitch.
4. Repeat five or six times through the same pair of holes. Keep the thread snug but not straining — you are stacking thread, not winching the button down.
5. On a four-hole button, work the first pair five or six times, then move to the second pair and do the same.

Which four-hole pattern to use

• Two parallel bars — what most shirts arrive with, and the least fussy to keep neat.
• A cross — looks deliberate on a plain garment.
• A square — the same job, a different look.

The thread shank: the step that makes coats work

If the fabric is thicker than a shirt — a jacket, a coat, a heavy cardigan — the button needs a stem of thread underneath so the other layer can sit beneath it without straining. This is the detail that separates a button that lasts from one that pops off again in a fortnight.

1. Before you start stitching, lay a matchstick, a toothpick or the shaft of your needle flat across the top of the button, between the holes.
2. Sew the button on over it, exactly as above. The stick holds the stitches loose by its own thickness.
3. Slide the stick out. The button now floats above the fabric on a small slack of thread.
4. Bring the needle up between the button and the fabric — not through a hole — and wind the remaining thread tightly around that slack five or six times. It forms a neat wrapped pillar.
5. Push the needle back down through the fabric to finish.

Shank buttons

A shank button is easier, because the stem is built in.

1. Anchor as usual, then bring the needle up.
2. Pass it through the metal or plastic loop, and go back down through the fabric a few millimetres away.
3. Repeat six or so times, keeping the loop lying in the direction the buttonhole will pull — usually flat along the garment edge, not standing upright.
4. Finish underneath in the normal way.

Finishing so it holds

Turn the garment over. On the underside, take two or three small stitches in the same spot, catching only the surface threads of the fabric. Then pass the needle through the loop of the last stitch and pull tight — that locks it without a bulky knot. Do it once more for a coat button. Trim the thread close, but not so close that the end slips back through.

Give the button a firm wiggle. It should sit still against the fabric with no gap, or, on a coat, float on its little thread pillar without rocking.

Why buttons fall off in the first place

Factory buttons are attached by machine with a short, fast run of thread and no shank. That is efficient, not durable. A hand-sewn button with doubled polyester and six passes will usually outlast every other button on the shirt — which is worth knowing when the next one goes, because you can pre-emptively resew the ones that matter.

When the fabric is the problem

If a button keeps tearing out and taking fabric with it, the problem is the cloth, not the stitching. Sew a small flat button on the inside, directly behind the outer one, and stitch through both. The load spreads across two buttons instead of a few threads.

When you are ready for a machine, the same logic about thread paths and tension carries straight over — threading a sewing machine is the next thing worth learning. But nothing on this page needs one. Wonky stitches on the underside of a button nobody will ever see are still a button that holds.