Couch Cushion Replacement Calculator
Ever sat down on your couch and felt like you’re sinking into a hammock that lost its shape? Or maybe the cushions look flat, lumpy, or just… wrong? You’re not alone. Many people stare at their worn-out sofa and wonder: is it worth it to replace couch cushions? Or should you just buy a new one?
The truth? It’s not a yes-or-no question. It depends on your couch, your budget, and how much you actually care about comfort. Let’s break it down-no fluff, just real talk from someone who’s replaced cushions on three different sofas in Melbourne’s humid climate.
When Replacing Cushions Makes Sense
Not all sofas are created equal. If your couch has a solid frame, good legs, and decent upholstery, replacing the cushions is often smarter than tossing the whole thing. I’ve seen people throw out perfectly good frames because the cushions looked bad. That’s like replacing your car’s tires and throwing away the engine.
Here’s when it’s worth it:
- Your sofa’s frame is still sturdy-no creaking, wobbling, or broken joints.
- The fabric is clean, undamaged, and you like the color or texture.
- The cushions have lost their bounce but aren’t torn or stained.
- You’re not trying to match a new decor style-just refresh what you’ve got.
I replaced the cushions on my 2019 sectional last year. The frame was solid, the fabric was still soft, and the cost was under $300. The difference? Like getting a new couch without the mess of moving a 400-pound piece of furniture.
What Goes Inside Cushions Matters More Than You Think
Not all foam is created equal. Most budget sofas come with low-density polyurethane foam-cheap, soft at first, but it collapses after 12-18 months. That’s why your cushions look flat even after fluffing.
When replacing cushions, upgrade the fill. Here’s what works:
- High-density foam (2.5-3.0 lb/ft³) - Lasts 5-8 years. Feels supportive, not mushy. Best for daily use.
- Memory foam layer over foam core - Adds comfort without sacrificing support. Great if you like that slow-sink feeling.
- Down or down-alternative wrap - Gives a plush, luxurious look. Needs fluffing, but feels premium.
- Combination: foam core + down wrap - The sweet spot for most homes. Support from below, softness on top.
I went with 3.0 lb foam cores wrapped in polyester fiberfill for my sectional. It’s been 14 months and still holds its shape. No sinking. No lumps. Just good, consistent comfort.
Cost Comparison: Replace vs. Replace
Let’s get real about money. Replacing cushions isn’t free-but it’s way cheaper than a new sofa.
| Option | Average Cost (AUD) | Lifespan |
|---|---|---|
| Replace cushions (DIY fabric + foam) | $150-$250 | 5-7 years |
| Replace cushions (professional service) | $300-$600 | 5-8 years |
| Buy new mid-range sofa | $1,200-$2,500 | 7-10 years |
| Buy new high-end sofa | $3,000+ | 10+ years |
Even if you pay a pro to rebuild your cushions, you’re still saving hundreds. And if you’re handy, you can do it yourself. I measured my cushions, ordered foam from Foam Online Australia, sewed covers with canvas duck fabric from Spotlight, and saved $400.
When Not to Replace Cushions
There are times when replacing cushions is a waste of time and money.
- Your frame is cracked, wobbly, or made of particleboard. No amount of foam will fix a weak foundation.
- The fabric is stained, faded, or torn beyond repair. Reupholstering is expensive-often close to the cost of a new couch.
- You’re trying to match a new room design. If you’re going for a modern look and your couch is 1990s-style, new cushions won’t help.
- The cushions are permanently misshapen due to water damage or mold. Foam can absorb moisture and never recover.
I once helped a neighbor replace cushions on a sofa that had been in a flooded basement. The foam smelled sour, the fabric was stained green, and the frame was warped. We tossed it. No shame in that.
How to Do It Yourself (Without Sewing Skills)
You don’t need to be a tailor to replace cushions. Here’s how I did it:
- Remove the old cushions. Take photos of how they’re attached-some have zippers, others are stapled.
- Measure each cushion: length, width, thickness. Write it down. Don’t guess.
- Order foam cut to size. Most online shops (like Foam Online Australia or Upholstery Supplies Australia) will cut foam for you. Specify density (2.5-3.0 lb/ft³).
- Buy fabric. Duck canvas or heavyweight upholstery fabric works best. Get enough to cover all cushions with 2-3 inches extra on each side.
- Use fabric glue or double-sided tape to attach the fabric to the foam. No sewing needed. Wrap it tight, like a present.
- Slide the new cushion into the cover or reattach it to the frame.
It took me 3 hours. My dog slept on it that night. No complaints.
How Long Should Cushions Last?
Low-end foam: 1-2 years. Medium-grade: 3-5 years. High-density: 5-8 years. If your cushions are older than 5 years and feel like a pancake, it’s time.
But here’s the trick: how you use your couch matters. If you sit on it daily, even the best foam will compress. If you only use it on weekends? It’ll last longer.
Flip and rotate cushions every 3 months. It’s a 30-second habit that doubles their life.
What About Memory Foam Cushions?
Memory foam sounds fancy-but it’s not always better for sofas. It’s designed for beds, where you lie still. On a couch, you shift, stand up, lean over. Memory foam holds your shape too long, making it hard to get up. It also traps heat.
For couches, go for high-density foam with a thin memory foam top layer-no more than 1 inch. That gives comfort without the slow-sink effect.
Where to Buy in Australia
You don’t need to go to a fancy upholstery shop. Here are reliable local options:
- Foam Online Australia - Best for custom foam cuts, fast shipping, good density options.
- Upholstery Supplies Australia - Great for fabric, zippers, and tools.
- Spotlight - Affordable fabric, seasonal sales, easy pickup.
- Local upholstery services - If you’re not DIY-inclined, ask for quotes. Most charge $50-$100 per cushion.
I’ve used all four. Foam Online got my order in 2 days. Spotlight had the fabric I wanted for $22 a meter.
Final Verdict
Is it worth it to replace couch cushions? Yes-if your frame is solid and you’re okay with a little work. You’ll get a like-new sofa for a fraction of the cost. And you’ll avoid the landfill.
But if your couch is old, the frame is weak, or the fabric is ruined? Just replace the whole thing. No guilt. No shame. Sometimes, it’s just time.
Replace cushions when you can. Upgrade foam when you do. And flip them every few months. That’s the secret most people never hear.