How to Replace Sofa Throw Pillow Covers

Why replace the covers

Throw pillow covers see more contact than any other part of a sofa. Over time they pick up oils, spills, pet hair, and abrasion from constant leaning. The fabric can fade, pill, or develop tears while the pillow insert stays perfectly usable. Replacing just the cover refreshes the look of the room without buying a whole new pillow or sofa.

It also gives you a chance to change the color or material of your pillows to match a new decor. The process is simple if the cover is designed to be removable. Many sofas use zipper or Velcro closures on throw pillows, and learning to handle them correctly will let you swap covers in minutes.

Check the closure type

Before you start, inspect the pillow to see how the cover is attached. Common closures include a zipper along one edge, a Velcro seam, buttons, a tie or ribbon closure, and an envelope overlap where one flap tucks inside another. Some covers are sewn shut and are not meant to be removed; those require a different approach.

Knowing the closure type tells you how to open it without damaging the fabric or the pillow. If you are unsure whether a cover is removable, look for a small seam that is stitched with a different thread or a hidden zipper pull. The Removable and Washable Sofa Covers article explains how to identify these details.

If the cover is sewn shut, you cannot replace it without cutting the stitching. In that case you can either sew a new closure yourself or use a decorative slipcover that fits over the entire pillow. You can also consider a full sofa replacement if the pillow covers are not the only issue, which links to our Best Velvet Sofas in 2026 guide for inspiration.

Measure the pillow insert

The most common mistake is to measure the old cover instead of the pillow inside. Covers stretch and shrink, and their dimensions are not reliable. Instead, take the cover off first and measure the insert when it is fully fluffed but not compressed. Lay it flat and measure the width and height from seam to seam. If the pillow is thick, also measure the depth at the center.

When buying a replacement cover, look for one that is a little larger than your insert. A cover that is exactly the same size will fight you when you try to close it and may leave wrinkles. A slightly larger cover gives the pillow room to fill out. The Sofa Throw Pillow Sizes article covers the standard ranges and how to match covers to inserts.

If your insert is an odd size, you can buy a cover that is one or two inches larger and let the fill expand. Do not size down; a too-small cover will stress the seams and the closure.

Remove the old cover

Start by fully opening the closure. If it is a zipper, unzip it all the way. For Velcro, peel the two sides apart completely. For buttons or ties, undo each one. You want the opening to be as wide as possible to avoid pulling the fabric over the pillow forcibly.

With the closure open, place one hand inside the cover and grasp the pillow through the fabric. Use the other hand to push the cover off the pillow by turning the cover inside out around the pillow. This is similar to removing a pillowcase. Work slowly to avoid catching the closure on the fabric.

If the zipper is stuck, apply a small amount of dry lubricant or rub the teeth with a candle stub, then try again. Do not pull with excessive force; you can tear the seam. If the cover is tightly fitted, you can roll the pillow inside the cover to break the friction. The Cushion Cover Closures article has tips for handling stuck closures.

Once the cover is off, set it aside. You can wash it according to its care label, or discard it if it is beyond repair.

Fit the new cover

Turn the new cover right side out and locate the closure opening. If the cover has a zipper, unzip it fully. If it uses Velcro, open the seam. For envelope or tie closures, leave the opening ready.

Insert the pillow into the cover with the closure side facing you. Use one hand to guide the pillow in while the other holds the cover open. Once the pillow is inside, shake the cover gently to let the insert settle into all corners. Adjust the fill so that the pillow looks even; some inserts have a seam down the middle that you can align with the cover's shape.

Close the closure. For a zipper, pull the zipper slowly while holding the fabric on both sides of the teeth to prevent it from catching. For Velcro, press the two sides together along the full length, starting from the middle and working outward. For buttons or ties, fasten them securely but without pulling the fabric too tight.

After closing, give the pillow a few sharp shakes to fluff it up. If the cover feels too tight, remove it and check whether the insert is properly aligned. You can also pat the pillow to redistribute the fill.

Troubleshoot closure issues

A zipper that catches is the most common problem when fitting a new cover. The fabric can fold into the teeth as you pull. To fix it, unzip a few inches, pull the fabric clear, and then zip again with the fabric held taut. You can also thread a safety pin through the zipper pull to give yourself a better grip.

Velcro closures can be annoying if the hook side snags the fabric as you close the cover. Try closing it while the cover is still open and the pillow is not fully inside; then adjust the fabric. Make sure the Velcro strips are clean and free of lint, as debris reduces their grip.

Button closures need enough fabric to overlap. If the buttons are pulling, the cover is too small. Consider moving the button placement or using a different cover size. The Cushion Cover Closures article explains why some closures are more reliable than others.

Wash new covers before first use

New pillow covers, like many textile products, can release volatile organic compounds (VOCs) and formaldehyde. The U.S. EPA notes that formaldehyde is used in permanent press fabrics, and VOCs are emitted by a wide range of household products, including furnishings and fabric treatments. Washing new covers before you put them on the pillow removes some of these chemicals and reduces off-gassing.

The EPA also advises that increasing ventilation when using products that emit VOCs helps lower indoor concentrations. If you can, wash the covers according to the care label, and let them air out in a well-ventilated area before placing them on your sofa. This is especially important in homes with children, the elderly, or people with respiratory sensitivities, as the EPA's indoor air quality guidance highlights.

Follow the care code on the label, and check the Sofa Care Codes article if you are unsure what the symbols mean. If you are washing removable covers, the How to Wash Removable Sofa Covers Safely article has specific steps.

What to pick for your use

Questions

How do I know if my throw pillow covers are removable?

Look for a zipper, Velcro seam, buttons, or an envelope opening. If you see any of these, the cover is meant to be taken off. If the cover is sewn shut with no opening, it is not removable without cutting the stitching.

What size replacement cover should I buy for my pillow?

Measure the pillow insert, not the old cover. If you need a new insert, pillows for hot sleepers offer a cooler alternative to standard fills. Measure the width and height when the pillow is fully fluffed. Buy a cover that is one to two inches larger in each dimension so the pillow fills it out without straining the seams.

How do I put a pillow into a cover that is too small?

If the cover is only slightly small, you can try compressing the insert while you slide it in, then shake it to let the fill expand. If the cover is significantly smaller, it is better to return it and get the correct size, because forcing it can tear the fabric or the closure.

Why does my zipper catch when I close the cover?

The fabric can fold into the zipper teeth. Unzip a few inches, pull the fabric away from the teeth, and zipper again while holding the fabric taut. You can also use a safety pin through the zipper pull for better grip, or lubricate the teeth with a dry lubricant.

Can I wash new pillow covers before using them?

Yes. Washing new covers helps remove formaldehyde residues and other VOCs that are common in permanent press fabrics. Follow the care label and air out the covers after washing to reduce off-gassing.