A zipper lets you remove and wash your pillow cover, and sewing one in is a learnable skill that takes about an hour once you have the right tools

A pillow zipper is a closure sewn into the seam of a pillow cover so you can open it, remove the stuffing or inner pillow, and wash the cover. The zipper sits hidden inside the seam — you do not see it from the outside. Sewing one in requires a sewing machine with a zipper foot (a special presser foot that lets the needle get close to the zipper teeth), a zipper cut to the length of one side of your pillow, and thread that matches your fabric. The basic method is to pin the zipper face-down along one edge of your pillow pieces, sew it to both pieces of fabric, then sew the rest of the seam closed around the other three sides.

The process is straightforward once you understand the order of steps: attach the zipper to the first fabric piece, attach it to the second piece, test that it slides smoothly, then sew the remaining three sides closed. Most of the work is sewing in straight lines at a slow, steady pace. If you have used a sewing machine before, you already have the skills you need.

Key Takeaways

  • Buy a zipper that is 2 to 3 inches shorter than the side where you want it — a 16-inch pillow needs a 13- to 14-inch zipper.
  • A zipper foot is essential; it is a small metal or plastic attachment that replaces your regular presser foot and costs $5 to $15.
  • The zipper goes between the two fabric pieces with the teeth facing inward, so the seam hides it completely.
  • Sew the zipper to each fabric piece separately before closing the rest of the seam, which prevents puckering and keeps the zipper straight.
  • Test the zipper before you sew the final seam closed; if it catches, you can still adjust it.

What you need before you start

Gather these items: two pieces of fabric cut to the size of your finished pillow (for example, two 16-inch squares), one zipper 2 to 3 inches shorter than one side of your pillow, thread that matches your fabric, a sewing machine, a zipper foot, pins, scissors, and an iron. The zipper foot is the one part many people do not have — it is a small presser foot attachment designed to ride close to the zipper teeth without hitting them. Check your sewing machine manual to see which zipper foot fits your model, or bring your machine to a fabric store and ask staff to show you the right one.

The zipper itself should be a standard coil or metal zipper in a length that is 2 to 3 inches shorter than the side of your pillow. For a 16-inch square pillow, use a 13- or 14-inch zipper. A zipper that is too long will stick out past the seam and look wrong; one that is too short will not open far enough to be useful. Most fabric stores sell zippers in 9-inch, 14-inch, 16-inch, and 20-inch lengths. If you cannot find the exact length you need, buy the next size up and trim it to fit — the instructions for trimming appear in the Frequently Asked Questions section below.

How to attach the zipper to the first fabric piece

Start with one of your two fabric pieces laid flat on your work surface, right side up. Open the zipper all the way. Place the zipper face-down (teeth pointing down toward the fabric) along one edge of the fabric, with the zipper tape aligned with the raw edge of the fabric. The zipper should sit centered on that edge, with equal space on either side. Pin the zipper tape to the fabric every 2 inches, pushing pins straight through both the tape and the fabric.

Attach the zipper foot to your sewing machine and thread it with thread that matches your fabric. Set your machine to a straight stitch and a medium stitch length (around 2.5). Position the fabric under the presser foot so the needle will sew along the edge of the zipper tape, about 1/8 inch from the teeth. Sew slowly from one end of the zipper to the other, keeping the line straight. Remove the pins as you go. When you reach the zipper pull, stop with the needle down, lift the presser foot, slide the pull out of the way, lower the presser foot, and continue sewing.

How to attach the zipper to the second fabric piece

Lay the second piece of fabric right side up on your work surface. Close the zipper. Place it face-down on this second piece, aligned with the same edge as before, and pin it in place the same way. The closed zipper should sit directly on top of the seam you just sewed on the first piece.

Sew along the other edge of the zipper tape using the same method — straight stitch, needle 1/8 inch from the teeth, sewing slowly from end to end. When you finish, you will have the zipper sandwiched between two fabric pieces with both sides of the zipper tape sewn down. Open the zipper to test it; it should slide smoothly. If it catches or binds, stop and check that the fabric is not bunched under the tape. You can carefully remove a few stitches and re-sew that section if needed.

Sewing the rest of the pillow seam closed

Switch back to your regular presser foot. Open the zipper halfway — this is important because it lets you turn the pillow right side out later. Pin the two fabric pieces together along the remaining three sides, with the zipper sandwiched between them. The raw edges of both pieces should line up exactly.

Sew around all three sides using a straight stitch and a 1/2-inch seam allowance (the standard for pillows). Start at one corner and sew continuously around, pivoting at each corner by stopping with the needle down, lifting the presser foot, turning the fabric, and lowering the presser foot again. When you reach the zipper seam, your stitches will overlap the zipper stitches slightly — this is normal and makes the seam stronger. Backstitch at the start and end to lock the thread.

Finishing the pillow

Trim the corners of the fabric diagonally, cutting about 1/4 inch from the corner point. This reduces bulk when you turn the pillow right side out and gives you crisp corners. Clip into the seam allowance along any curved edges if your pillow has them, cutting perpendicular to the seam without cutting through the stitches.

Reach through the open zipper and pull the pillow right side out. Use a point turner or the blunt end of a chopstick to push the corners out fully. Press the pillow flat with an iron, paying special attention to the seams. Insert your pillow form or fiberfill through the zipper opening and close the zipper. The zipper is now hidden inside the seam and your pillow is complete.

Troubleshooting common zipper problems

If the zipper pulls apart when you close it, the teeth may not be aligned. Open it fully and check that both sides of the slider are sitting evenly on the teeth. If one side is higher than the other, gently wiggle the slider back to center. If the zipper jams, do not force it — stop, open it slightly, and check for fabric caught in the teeth. Gently work the fabric free and try again.

If your stitches are crooked or too far from the zipper teeth, the zipper foot may not be positioned correctly. Check your machine manual to see which side of the foot the needle should pass through. Some zipper feet have the needle on the left, others on the right. If your stitches are too close and the needle hits the teeth, move the foot slightly to the left or right before sewing the next seam. Practice on scrap fabric first to dial in the right position.

Frequently Asked Questions

Can I use a regular presser foot instead of a zipper foot?

No — a regular presser foot is too wide and will not let the needle get close enough to the zipper teeth. You will end up sewing too far from the teeth, leaving a gap between the stitches and the zipper, which looks sloppy and weakens the seam. A zipper foot costs $5 to $15 and is worth the investment if you plan to sew more than one zippered pillow.

What if my zipper is longer than the side of my pillow?

Trim it. Close the zipper and measure the length you need. Mark the zipper tape with a pen at the correct length, then carefully cut across both the tape and the teeth at that mark using heavy-duty scissors or a rotary cutter. Seal the cut end by explore a small dab of clear nail polish or fabric glue to the cut edge to prevent fraying.

Do I have to open the zipper halfway before sewing the final seam?

Yes — if the zipper is fully closed, you will sew it shut and not be able to turn the pillow right side out. Opening it halfway lets you reach through and pull the fabric through the opening. Once the pillow is right side out, you can close the zipper the rest of the way.

Can I sew the zipper to the wrong side of the fabric instead?

Yes, but it will show on the outside of the finished pillow. Sewing it face-down (teeth toward the fabric) hides it completely inside the seam. If you want the zipper visible as a design detail, sew it face-up instead, and skip the step of turning the pillow right side out.

What thread color should I use?

Use thread that matches your fabric as closely as possible. If your fabric is a solid color, match that color. If your fabric is a print, choose a thread color that matches the dominant color in the print. The stitches will be less noticeable and the pillow will look more finished.