What a blanket stitch is and why it matters

A blanket stitch is a loop-based hand stitch that finishes the raw edge of fabric and prevents it from fraying. Unlike a straightforward running stitch that goes straight through fabric, the blanket stitch wraps thread around the edge itself, creating a visible, decorative border. The loop sits on the edge of the fabric, and the needle passes through the loop each time, locking it in place.

Blanket stitches work best on blankets, felt, fleece, and other materials where a finished edge matters both for durability and appearance. The stitch is strong enough to hold up to washing and wear, and it looks intentional rather than patched. It also works on appliqué (fabric pieces sewn on top of other fabric) and anywhere you want to seal an edge without a binding or hem.

Key Takeaways

  • Thread your needle, knot the end, and start from inside the fold of the fabric edge so the knot stays hidden.
  • Bring the needle up through the fold, then insert it perpendicular to the edge and bring it back out below, catching the loop of thread under the needle tip.
  • Keep stitches evenly spaced (roughly 1/8 inch apart) and the loop tension consistent so the edge looks neat and holds securely.
  • Work slowly and keep the fabric edge toward you; rushing causes uneven loops and weak spots where the stitch can catch and tear.

Setting up your thread and needle

Use a needle sized to your thread. A size 7 or 8 embroidery needle works well for most blanket-stitch thread weights; if your thread is thick, go up to a size 5 or 6. Thinner thread (like regular sewing thread) works in a size 9 or 10, though blanket stitches look better with slightly heavier thread because the loop shows more clearly.

Cut a length of thread about 18 to 24 inches long. Longer lengths tangle and fray as you work; shorter lengths mean more knots. Thread the needle and tie a knot at the end. The knot should be small and tight—a double knot works better than a single one because it won't slip through the fabric fold.

If you are working with delicate fabric or felt, test the needle and thread on a scrap first. Some combinations leave visible holes; others glide through cleanly. Blanket stitch thread (also called pearl cotton or embroidery floss) is thicker than regular sewing thread and shows the stitch shape better, but regular thread works if that is what you have.

Starting the stitch at the edge

Position the fabric so the edge you want to stitch faces you. If you are finishing the edge of a blanket, the raw edge should be at the bottom or toward your body. Fold the very edge of the fabric back about 1/8 inch—this fold is where the blanket stitch sits. The fold creates a clean line and hides the raw fibers.

Insert the needle from inside the fold (the side facing away from you) and bring it up through the fold so the knot stays hidden inside. The needle should come out right at the fold line. This is your starting point. Pull the thread snug but not tight; you want the loop to sit on the edge, not pull the fabric.

If you are stitching a corner or curve, start on a straight section first to get the rhythm down. Corners and curves need slightly shorter stitches (closer together) to sit flat, and that is easier to learn after you have done a few straight stitches.

Making each stitch: the loop and the lock

Bring the needle up through the fold again, about 1/8 inch to the right of where you started (or left, depending on which direction you are working). Before you pull the needle all the way through, look at the thread: it should form a loop that hangs below the fold, and the needle should pass through that loop.

Here is the key move: as you pull the needle through, keep the loop of thread under the needle tip. Do not let it slip off. Pull the thread snug—not yanked tight, but firm enough that the loop sits neatly on the edge and does not dangle. The loop should look like a small arch sitting on the fold.

Now insert the needle perpendicular to the edge (straight down into the fabric, not at an angle) about 1/8 inch to the right of where it came out. Bring the needle back out through the fold, about 1/8 inch further along. Again, the thread forms a loop, and the needle passes through it as you pull. Repeat this motion all the way along the edge.

Keeping stitches even and the edge clean

Spacing matters. If stitches are too far apart (more than 1/4 inch), the edge will not be fully sealed and fraying can start between them. If they are too close (less than 1/16 inch), the edge becomes stiff and the stitches bunch. Aim for roughly 1/8 inch between stitches—about the width of a pencil eraser. Mark the edge lightly with a pencil if you need a guide, especially on your first blanket.

Keep the loop tension consistent. If one stitch is loose and the next is tight, the edge looks uneven and weak spots form where loose stitches can catch. The loop should sit flat on the fold, not puffed out or pulled under. This takes practice; your first few stitches will probably be uneven, and that is normal.

Work slowly. Rushing causes the needle to slip out of the loop or the loop to twist. If you feel the thread catching or bunching, stop and look at what happened. Usually the loop slipped off the needle or the thread twisted. Back up one stitch, pull the thread out, and start that stitch again.

Finishing the stitch and securing the end

When you reach the end of the edge, bring the needle up through the fold one last time. Do not make another loop stitch. Instead, insert the needle back down into the fold right next to where it came out, and run the needle inside the fold for about 1/2 inch. Bring it back out and trim the thread close to the fabric. The thread end will be hidden inside the fold.

If you run out of thread before the edge is done, finish the same way: run the needle inside the fold and trim. Start a new thread by inserting the needle inside the fold about 1/2 inch before where you stopped, bring it out at the fold line, and continue stitching. The overlap hides the join.

Once the stitch is complete, gently tug the edge to test it. A well-done blanket stitch should not pull apart or slip. If it does, the loops were too loose or the stitches were too far apart. You can go back and add extra stitches in the gaps, or accept it as a learning piece and stitch tighter on the next blanket.

Blanket stitch on curves and corners

Straight edges are forgiving. Curves and corners need adjustment. On a curve, shorten the stitch spacing to about 1/16 inch so the loops sit flat and do not bunch or gap. On an outside corner (where the edge turns outward), you may need to make two stitches in the same spot at the corner point to keep the loop from twisting.

On an inside corner (where the edge turns inward), skip one stitch at the corner so the loop does not overlap itself. The exact adjustment depends on how tight the curve is; gentle curves need less change than sharp corners. If your first attempt looks wrong, pick it out and try again. Curves are where blanket stitch gets tricky, and even experienced sewers sometimes redo them.

Frequently Asked Questions

What thread should I use for a blanket stitch?

Blanket stitch thread (pearl cotton or embroidery floss) shows the stitch shape best and is thicker than regular sewing thread. Regular sewing thread works but looks thinner and less defined. Match the thread color to the fabric or use a contrasting color if you want the stitch to stand out as a design detail.

Can I use a blanket stitch on a sewing machine?

Yes. Most sewing machines have a blanket stitch setting. Set the stitch width and length in the machine settings, and the machine will create the loop automatically. Hand stitching gives you more control over spacing and tension, but machine stitching is faster for large projects like actual blankets.

What happens if my stitches come loose?

Loose stitches usually mean the loop slipped off the needle or the thread was not pulled snug enough. If a stitch comes undone after you have finished, you can tack it back down by hand with a needle and thread, or pick out that section and re-stitch it. Washing and drying can loosen stitches if the tension was not firm to begin with.

Do I have to fold the edge before stitching?

No, but it looks better and lasts longer. Folding the edge hides the raw fibers and creates a clean line. If you stitch directly on an unfolded edge, the raw fibers still show and can fray. Folding takes an extra minute but makes the finished blanket look intentional and professional.

How do I fix a mistake in the middle of the stitch?

Pull the thread back out and pick out the stitches one at a time until you reach the mistake. Then re-thread the needle and start again from that point. It is faster than trying to fix it in place, and the result looks cleaner. Do not be afraid to undo work; even experienced sewers do it regularly.