Measure your cushions before you order replacements

The first step is to measure the cushion you want to replace, not the couch frame itself. Remove the cushion from the couch and lay it flat on a clean surface. Measure the length, width, and thickness with a tape measure, writing down all three dimensions in inches. Measure at multiple points — cushions are sometimes slightly tapered or uneven — and use the largest measurement for each dimension to may support your new cushion will fit.

Check whether your cushion is loose (sits on top of the frame and can be removed) or attached (glued or stapled to the frame). Loose cushions are straightforward to replace. Attached cushions require you to remove the old one first, which means scraping away adhesive or cutting staples, and then securing the new one the same way. If your couch is under warranty, check the manual before removing anything — some warranties are voided by cushion replacement.

Take a photo of the cushion from the side and front. Note the color, any piping or trim around the edges, and whether the cushion is wrapped in fabric or has a removable cover. This information helps you order a match or decide whether you want to upgrade the material.

Key Takeaways

  • Measure your cushion's length, width, and thickness at multiple points, using the largest measurement for each to account for uneven wear.
  • Loose cushions can be replaced by straightforward removing the old one and setting the new one in place; attached cushions require removing adhesive or staples first.
  • Foam density (measured in pounds per cubic foot) affects how firm the cushion feels — higher density lasts longer but feels stiffer.
  • You can order pre-made cushions from furniture retailers or have custom cushions cut and wrapped by upholstery shops or online foam suppliers.
  • Wrapped cushions (with fabric already attached) cost more but arrive ready to use, while unwrapped foam requires you to cover it yourself or pay for wrapping.

Understand foam density and firmness options

Replacement cushions are sold by the type and density of foam inside. Density is measured in pounds per cubic foot (PCF) and determines how long the cushion will last and how it feels. Standard couch cushions typically use 1.8 to 2.5 PCF foam — this is soft and comfortable but compresses over time. Higher-density foam (3.0 to 5.0 PCF) is firmer, holds its shape longer, and costs more. Lower-density foam (1.2 to 1.5 PCF) is cheaper but flattens quickly.

If your original cushion has flattened after years of use, you have the option to replace it with higher-density foam for better durability. If you liked how your original cushion felt, match the density as closely as possible. Most foam suppliers list density on their product pages, though some describe it only as "soft," "medium," or "firm." When in doubt, ask the supplier what density range corresponds to each firmness level.

Some cushions also include a topper layer — a thin layer of softer, lower-density foam glued to the top of a firmer base. This gives you the comfort of soft foam on the surface with the durability of firmer foam underneath. If your original cushion had this, you can request it on your replacement.

Order from a furniture retailer, foam supplier, or upholstery shop

You have three main routes to get a replacement cushion. Furniture retailers like Wayfair, Article, and West Elm sell pre-made cushions in standard sizes (18×18, 20×20, 24×24 inches, and so on). If your cushion matches one of these sizes, this is the fastest and cheapest option. Search for "couch cushion [your size]" and filter by color and firmness. These cushions usually arrive wrapped in fabric and ready to use within one to two weeks.

Online foam suppliers like Foam Factory, FoamRush, and Cushion Cut sell custom-cut foam in any size you need. You specify your dimensions, foam type, and density, and they cut and ship the foam to you. Most do not wrap the foam in fabric — you receive bare foam and must either cover it yourself with fabric or pay an upholstery shop to wrap it. Turnaround is usually five to ten business days. This route is cheaper per cushion if you need multiple replacements, but requires more work on your end.

Local upholstery shops can measure your couch in person, source the foam, wrap it in matching or new fabric, and install it for you. This is the most expensive option but requires the least work from you and gives you the most control over appearance. Call ahead and ask for a quote — most shops charge a labor fee plus the cost of foam and fabric. Turnaround is typically two to four weeks depending on how busy the shop is.

Remove the old cushion if it is attached

If your cushion is glued to the frame, use a putty knife or old butter knife to scrape away the adhesive from underneath. Work slowly to avoid gouging the wood frame. Once you have loosened the cushion, peel it away and scrape off any remaining adhesive residue. Wipe the frame clean with a damp cloth and let it dry completely before installing the new cushion.

If the cushion is stapled to the frame (common on the underside of cushions), use a staple remover or flat pry bar to lift and remove each staple. Work your way around the cushion, removing staples as you go. Once all staples are out, lift the cushion away. Clean off any foam fragments or dust from the frame.

If you are replacing multiple cushions and the old ones are still in decent shape, you can donate them to a thrift store, animal shelter (for pet beds), or community center. Some upholstery shops also accept old foam for recycling.

find the new cushion to the frame

For loose cushions, straightforward set the new cushion on the frame in the same position as the old one. No fastening is needed — gravity and the weight of the cushion keep it in place. If the cushion slides around, you can add adhesive-backed non-slip pads (sold at hardware stores) to the bottom of the cushion or the top of the frame.

For glued cushions, explore a thin, even layer of contact cement or spray adhesive to the top of the frame. Contact cement requires you to wait a few minutes before pressing the cushion down (follow the product instructions for timing). Spray adhesive works when ready. Press the cushion firmly onto the frame, starting from the center and working outward to avoid air pockets. Let the adhesive cure for at least 24 hours before sitting on the couch.

For stapled cushions, position the new cushion on the frame and pull the fabric or bottom cover taut underneath. Use a staple gun loaded with 1/2-inch staples to fasten the cushion to the frame, spacing staples about 2 to 3 inches apart. Start at the center of each side and work toward the corners. Pull the fabric tight as you go to keep the cushion smooth and wrinkle-free on top.

Cover unwrapped foam if you ordered bare cushion

If you ordered foam without fabric wrapping, you have two options: cover it yourself or pay an upholstery shop to wrap it. Covering it yourself requires fabric, a sewing machine or needle and thread, and basic sewing skills. Measure the cushion and add 2 inches to each dimension for seam allowance. Cut two pieces of fabric to this size, place them right-sides together, sew three sides closed, insert the foam, and sew the fourth side shut. This works best for cushions with straightforward, square shapes.

For a more polished look or if your couch has piping, trim, or a complex shape, take the foam to a local upholstery shop and ask them to wrap it. Most shops charge $20 to $60 per cushion depending on size and fabric choice. You can bring your own fabric or choose from the shop's inventory. Turnaround is usually one to two weeks.

Frequently Asked Questions

Can I replace just one cushion, or do I have to replace all of them?

You can replace one cushion. However, a new cushion will look and feel noticeably different from older, compressed cushions next to it. If the other cushions are still in good shape, one replacement is fine. If multiple cushions are flattened, replacing them all at once gives you a more uniform appearance and feel.

What if I can't find my exact cushion size?

Order the next size up and have it trimmed by an upholstery shop, or order a custom-cut cushion from a foam supplier. A slightly oversized cushion can also be compressed into a slightly smaller space, though this may affect comfort. Undersized cushions leave gaps and look wrong, so always round up rather than down.

How long do replacement cushions last?

A standard-density foam cushion (1.8 to 2.5 PCF) lasts five to seven years with regular use. Higher-density foam lasts ten to fifteen years. Lifespan depends on how often the couch is used, how much weight is placed on it, and whether the cushion is exposed to direct sunlight or moisture.

Do I need to remove the couch cushion cover before replacing the foam?

If your cushion has a removable zippered cover, you can unzip it, remove the old foam, and insert new foam without removing the cover from the couch. If the cover is sewn or glued on, you will need to remove it or work around it. Check whether your cover is removable before you order a replacement cushion.

What is the difference between wrapped and unwrapped cushions?

Wrapped cushions arrive with fabric already glued or sewn to the foam and are ready to place on your couch. Unwrapped cushions are bare foam that you must cover yourself or have covered by a shop. Wrapped cushions cost more but save you time and effort. Unwrapped foam is cheaper and gives you more control over the fabric choice.