Blanket binding is a strip of fabric sewn around the edge of a blanket to finish it neatly and add durability

Blanket binding covers the raw edges of your blanket fabric and prevents fraying. You fold the binding strip in half lengthwise, press it, then sew it to the front of the blanket so the fold wraps around the edge. The back stitches down in a single pass if you use the right method. Most home sewers use a machine stitch for speed, but hand sewing produces a more invisible finish if you have the time.

The binding itself is usually 2 to 2.5 inches wide before folding. You can buy pre-made binding by the yard at fabric stores, or cut and press your own from matching or contrasting fabric. Pre-made binding saves time but costs more. Cutting your own takes an extra 20 to 30 minutes but costs less and lets you choose any fabric you want.

Key Takeaways

  • Blanket binding must be cut on the bias (diagonal grain) if you are cutting your own, so it stretches around corners without puckering.
  • Press the binding in half lengthwise before you sew it on, so the fold is sharp and the two layers are even.
  • Machine sewing takes 30 to 45 minutes for a standard blanket; hand sewing takes 2 to 3 hours but produces a flatter, less visible seam on the back.
  • Start sewing at a corner or the middle of a side, not at a corner, so your seam ends do not meet at a visible point.
  • Miter the corners by folding the binding at a 45-degree angle before you fold it around the edge, so the binding lies flat at each corner.

Measure and cut the binding strips

Measure all four sides of your blanket and add 10 inches to account for corners and overlap. If your blanket is 60 inches by 80 inches, you need roughly 300 inches (60 + 60 + 80 + 80 + 10) of binding. Write this number down.

If you are cutting your own binding, cut strips on the bias at 2.5 inches wide. The bias runs at a 45-degree angle to the grain of the fabric and stretches slightly, which lets the binding bend smoothly around corners. Lay your fabric on a flat surface, find the corner, and use a ruler and rotary cutter to cut diagonal strips. You will need to sew these strips end-to-end to reach your total length. Sew them together with a diagonal seam (place two strips right sides together at a 45-degree angle, sew, and trim the corners), then press the seams open.

Once you have one long strip, fold it in half lengthwise with wrong sides together and press with a hot iron. The fold should be crisp and the edges should line up evenly. If one edge is longer than the other, trim it with scissors before you move on.

Attach the binding to the front of the blanket by machine

Lay your blanket flat on a table or floor. Open the binding strip (unfold it) and pin it to the front of the blanket, raw edges aligned, starting at the middle of one side—not at a corner. Leave a 6-inch tail of binding unpinned at the start. Sew with a 1/4-inch seam allowance using a straight stitch. Sew slowly and stop 1/4 inch before you reach the first corner.

At the corner, fold the binding up at a 45-degree angle away from the blanket, then fold it back down so the fold sits at the corner and the binding runs along the next side. This is called a mitered corner. Pin the folded binding in place and continue sewing from the corner onward. Repeat this fold at each of the four corners.

When you reach the end, overlap the binding tail by 1 inch, trim the excess, and sew the last inch down. Press the entire seam with an iron to set the stitches.

Fold the binding to the back and stitch it down

Fold the binding to the back of the blanket so the pressed fold wraps around the edge. The fold should sit exactly at the edge—not hanging over it or pulled short. Pin it in place every 4 to 6 inches, working your way around all four sides. At the corners, the mitered fold should form a neat 45-degree angle on the back as well.

Machine stitch the binding down on the back using a straight stitch, sewing as close to the fold as you can. A walking foot (a presser foot that feeds fabric evenly) helps prevent puckering on thick blankets. Sew slowly and check the front occasionally to make sure the binding is not shifting. When you finish, press the entire binding with an iron to flatten it.

Hand sewing the binding for a flatter finish

If you prefer a less visible seam, sew the binding to the back by hand instead of machine. After you have machine-stitched the binding to the front and folded it to the back, thread a needle with thread that matches the binding. Knot the end.

Use a ladder stitch (also called an invisible stitch) to close the fold. Bring the needle up through the fold from inside, then insert it directly across into the blanket fabric, slide it 1/4 inch along inside the blanket, and come back out. Go back into the fold directly across from where you exited, slide 1/4 inch inside the fold, and come back out. Repeat this back-and-forth motion all the way around. The thread stays hidden inside the fold and the seam is nearly invisible from the front.

Hand sewing takes longer—usually 2 to 3 hours for a standard blanket—but the result is flatter and more professional-looking. It is worth the time if this is a gift or a blanket you plan to keep for years.

Common mistakes and how to avoid them

The most common mistake is sewing the binding with the fold on the wrong side. The fold must face outward (toward the edge of the blanket) on the front, and inward (toward the blanket fabric) on the back. If you sew it backward, the raw edges will show and the binding will fray.

Another frequent problem is corners that pucker or bunch. This happens when the binding is not cut on the bias or when the mitered fold is not sharp enough. Always press the binding before you sew it, and always fold the corners at exactly 45 degrees. If a corner does pucker, you can sometimes fix it by carefully unpicking the stitches, re-folding the corner, and sewing again.

Uneven edges on the back happen when you do not pin the binding before sewing. Pin every 4 to 6 inches and check that the fold is sitting exactly at the edge of the blanket. If the binding is too loose, it will hang below the edge; if it is too tight, it will pull the blanket fabric and create wrinkles.

Choosing between pre-made and homemade binding

Pre-made binding comes in standard widths (usually 1.5 to 2.25 inches) and is already folded and pressed. You can buy it in hundreds of colors and patterns at fabric stores or online. The downside is cost—pre-made binding runs 50 cents to $1.50 per yard, which adds up on a large blanket. It also comes in limited widths, so if you want a wider or narrower binding, you have to cut your own.

Cutting your own binding lets you use any fabric you own and make the binding as wide or narrow as you want. It takes extra time upfront but costs almost nothing if you have scrap fabric. If you are making multiple blankets, cutting your own binding becomes more economical. For a single blanket or if you are short on time, pre-made binding is the faster choice.

Frequently Asked Questions

Can I use regular fabric strips instead of bias-cut binding?

Straight-grain strips will work on straight edges but will pucker and bunch at corners because they do not stretch. Bias-cut binding is worth the extra cutting time because it bends smoothly around corners without wrinkles. If you have already cut straight strips, you can still use them, but expect the corners to look less polished.

What thread color should I use?

Use thread that matches the binding fabric, not the blanket. If the binding is a contrasting color, match the binding. If you are hand sewing and want the seam to be invisible, match the thread to the back of the binding. For machine sewing on the back, the thread color matters less because it is hidden inside the fold.

How do I fix a corner that is puckered after sewing?

Carefully cut the stitches with a seam ripper and unfold the corner. Re-fold it at exactly 45 degrees, press it with an iron, and pin it in place. Sew the corner again, sewing slowly and checking that the binding is not shifting. If the pucker returns, the binding may not have been cut on the bias—cut a new binding strip and try again.

Do I have to miter the corners?

Mitering creates the neatest finish, but you can also fold the binding straight around the corner without the 45-degree angle. The result is a small pleat at each corner instead of a flat fold. It is faster but less polished. Most sewers miter because the extra 30 seconds per corner is worth the cleaner look.

Can I sew binding on a blanket that is already finished?

Yes. If your blanket has a finished edge (like a rolled hem or serged edge), you can still add binding. Trim the finished edge with scissors so it is flat, then follow the same steps. The binding will cover the old edge and give the blanket a fresh look.