️ Find Your Replacement Cushion Size
Not sure what size replacement cushion you need? Our free Replacement Cushion Size Calculator helps you determine the correct cushion dimensions before you buy. Simply enter your existing cushion's length, width, thickness, and quantity to receive a recommended replacement size.
Whether you're replacing worn-out sofa cushions, upgrading foam inserts, or shopping for new cushion covers, using the correct measurements ensures a better fit, improved comfort, and a refreshed look for your furniture.
Enter your existing cushion measurements below to receive a recommended replacement size.
✅ Your Recommended Replacement
Length:
Measured from the left side to the right side of your cushion.
Width:
Measured from the front edge to the back edge of your cushion.
Thickness:
The height (depth) of your cushion from top to bottom.
Quantity:
Purchase this many replacement cushions or inserts.
Buying Tips
- Choose replacement inserts with the same dimensions as your existing cushions.
- If your cushions are sagging, consider high-density foam for better support.
- If you want a softer seating feel, memory foam may be a better option.
- Always measure from seam to seam before ordering replacement inserts.
How to Use Your Results
After entering your cushion measurements, the calculator will display your recommended replacement cushion size and the number of cushions you need. Use these measurements when shopping for replacement cushion inserts, foam, or covers.
- Match the recommended length, width, and thickness as closely as possible.
- For the best fit, measure your existing cushion from seam to seam.
- If you cannot find an exact size, consider a custom-cut foam insert.
- Replacing all seat cushions together usually provides the most even appearance and comfort.
Frequently Asked Questions
How accurate is this cushion size calculator?
The calculator uses the measurements you enter to recommend the correct replacement cushion size. Accurate measurements will help you choose the best fitting replacement inserts or foam.
Should I buy the exact same cushion size?
Yes. Choosing replacement cushions with the same dimensions usually provides the best fit and restores your sofa's original comfort and appearance.
What if I can't find the exact cushion size?
If your exact size is unavailable, choose the closest available option or consider ordering a custom-made cushion insert for the best results.
Can I use this calculator for outdoor cushions?
Yes. As long as you measure your existing cushions accurately, the calculator can also help estimate replacement sizes for many outdoor seating cushions.