What a blind hem is and why you'd use one

A blind hem is a stitch that closes a fold of fabric from the inside so the thread is nearly invisible on the outside. You use it on the hems of pants, skirts, dresses, and other garments where you want the hem to look finished but don't want to see stitching. The thread runs inside the fold of the hem itself, catching only a thread or two of the garment fabric with each stitch, so from the outside it looks like the hem is straightforward pressed in place.

Hand sewing a blind hem takes longer than machine sewing, but it gives you control over tension and placement, and it's the standard finish for tailored clothing and delicate fabrics. Once you understand the rhythm of the stitch, it becomes meditative work you can do while sitting down.

Key Takeaways

  • Thread your needle with a single strand about 18 inches long, knotted at one end, and start inside the fold of the hem so the knot is hidden.
  • The stitch alternates between running the needle inside the fold and catching a single thread of the garment fabric just above the hem fold.
  • Keep your stitches small—about one-eighth inch—and your tension loose enough that the thread doesn't pucker the fabric.
  • Work from right to left if you are right-handed, keeping the fold toward you so you can see exactly where your needle enters and exits.

Preparing the hem and threading your needle

Before you start stitching, the hem must be folded and pressed. Fold the raw edge of the fabric up to the finished hem length, then fold that folded edge up again about half an inch—this creates the pocket where your thread will run. Press the fold with an iron so it holds its shape. If the hem is on a pant leg or skirt, you can pin it in place or use a few temporary stitches to keep it from shifting while you work.

Cut a length of thread about 18 inches long—longer than that and it tangles, shorter and you'll have to knot on too often. Use thread that matches your fabric color, or a shade slightly darker if you can't find an exact match. Thread a needle with a single strand (not doubled) and tie a small knot at one end. A single strand is thinner and less visible than doubled thread, and it's easier to control.

Starting the stitch inside the fold

Slide your needle into the fold of the hem, between the two layers of fabric, about an inch away from where you want to begin stitching. Push the needle along inside the fold until the knot catches on the fabric and stops—the knot should be hidden inside the fold, not visible on either side. Bring the needle back out through the fold at the point where you want to start your first stitch.

This method hides the knot so you don't have a bulky starting point. If you're working on a seam, you can start at the seam itself, which is already thick and will hide the knot easily.

The blind hem stitch: the basic motion

The blind hem stitch is a back-and-forth motion between the fold and the garment fabric. Here's the sequence: with your needle coming out of the fold, take it straight across and catch a single thread of the garment fabric just above the fold—this should be a tiny bite, no more than one-eighth inch wide. Don't go through both layers; you're catching only the top layer so the stitch won't show on the outside.

After you catch that thread, bring your needle back into the fold, directly across from where you just came out. Run the needle inside the fold for about one-quarter inch, then bring it back out. You've now completed one stitch. Repeat this motion: out of the fold, catch a thread of the garment, back into the fold, run inside the fold, out again. The thread runs mostly inside the fold, with only tiny catches on the garment fabric.

Keep your stitches small and even. Stitches that are too large will be visible from the outside; stitches that are too tight will pucker the fabric and create a ridge along the hem line. Your tension should be loose enough that you can pinch the fabric between stitches without feeling resistance from the thread.

Working your way along the hem

Work from right to left if you're right-handed, keeping the fold of the hem toward you. This position lets you see exactly where your needle is going and gives you the best angle for catching just a single thread of the garment. If you're left-handed, work from left to right for the same reason.

Every inch or so, gently pull the thread to close the fold, but don't pull hard—a light tug is enough. If you pull too hard, you'll create puckers and the hem will bunch. The fold should close smoothly, with the thread running invisibly inside it.

When you reach the end of your thread length (usually after 6 to 8 inches of hem), tie off by taking a small stitch in the fold, looping your thread around the needle, and pulling tight. Slide the needle back into the fold and run it inside for an inch before bringing it out and cutting the thread close to the fabric. This hides the knot inside the fold.

Common mistakes and how to avoid them

The most common mistake is catching too much fabric on the garment side. If you catch more than a thread or two, the stitch will show on the outside as a visible line. Practice catching just the top layer—if you're unsure, use a seam ripper to undo a few stitches and try again. It's better to unpick and redo than to finish a hem that shows stitching.

The second mistake is pulling the thread too tight. This creates a ridge along the hem that's visible and uncomfortable to wear. Keep your tension loose and let the fold close naturally. You should be able to move the fabric freely along the hem line without feeling the thread resist.

The third mistake is making stitches too large. Stitches larger than one-eighth inch will show, especially on lighter fabrics. Slow down and keep each stitch small and deliberate. Speed comes with practice, but accuracy comes first.

When to call in a professional

If you're hemming a delicate fabric like silk charmeuse or lace, or if the garment is expensive and you're not confident in your stitching, a tailor can finish the hem for you. A blind hem by hand on a straightforward garment like cotton pants or a linen skirt is a good project to practice on. Once you've done three or four hems, the motion becomes automatic and you can work faster.

If the hem is curved—like the hem of a full skirt—the blind stitch still works the same way, but you'll need to ease the fabric slightly as you go so the hem doesn't pucker at the curves. Take smaller stitches on the curves and keep your tension even looser than usual.

Frequently Asked Questions

Can I use a blind hem stitch on knit fabric?

Yes, but knits need a slightly different approach. Use a single strand of thread and keep your tension very loose—knits are stretchy and tight stitching will distort them. You may also want to use a ballpoint needle, which slides between fibers rather than piercing them. The stitch itself is the same; just be gentler with the fabric.

What if I accidentally catch both layers of the hem fold?

If you realize you've stitched through both layers, the stitch will show on the inside of the hem. Use a seam ripper to remove those stitches and start again. It's a small setback and happens to everyone learning the stitch. The inside of a hem doesn't need to look perfect, but if it bothers you, unpick and redo.

How long does it take to hand sew a blind hem?

A straightforward hem on a pair of pants or a skirt usually takes 30 to 45 minutes once you're comfortable with the stitch. Your first hem may take an hour or more. The time depends on the length of the hem, the thickness of the fabric, and how many times you stop to check your work.

Do I need special thread for a blind hem?

No. Regular sewing thread in a color that matches your fabric works fine. Some people prefer thread labeled "hand sewing thread" because it's slightly thicker and less likely to tangle, but all-purpose thread is perfectly adequate. The key is matching the color, not the thread type.