How to Measure for Outdoor Cushions: A Step-by-Step Guide
When it’s time to order new outdoor cushions for your patio furniture, nothing is more important than accurate measurements. Many people search for outdoor chair cushions, patio cushions, or even Sunbrella cushions, but quickly realize there’s no true “standard size” for outdoor furniture. Every chair, sofa, and chaise is different.
That’s why at Cascadia Outdoor Cushions, we specialize in custom-made patio furniture cushions and outdoor patio furniture replacement cushions. With the right measurements, we can create cushions that look like they came with your furniture—only better.
If you’d like a printable guide, download our HOW TO MEASURE GUIDE
Why Measuring the Frame Matters
Old cushions stretch, flatten, and lose shape over time. If you measure your old cushion, you’ll likely end up with a poor fit.
The key to ordering the perfect patio chair cushions or patio furniture replacement cushions is to measure the furniture frame itself. This guarantees your new outdoor furniture cushions will sit correctly, look sharp, and provide lasting comfort.
Step 1: Measure the Width
Measure across the seat or back, inside edge to inside edge.
Record the widest point for accurate outdoor chair cushion sizing.
Remember, different chairs—even from the same set—can vary slightly.
Step 2: Measure the Depth
Measure from the front edge of the frame to where the backrest begins.
For benches and chaises, measure the full depth.
Depth is especially important when ordering outdoor cushions for patio furniture like sectionals, lounges, and modular sets.
Step 3: Measure the Height (Back Cushions)
Measure from the seat base up to the top of the frame.
Rule for Separate Seat & Back Cushions: Deduct the seat cushion thickness from the back cushion height, since the back cushion sits on top of the seat cushion.
Example: If your frame measures 24" high and your seat cushion is 6" thick, the correct back cushion should be ~18".
This is a common mistake customers make when ordering outdoor patio furniture replacement cushions, and it can result in backs that are too tall.
Step 4: Decide on Cushion Thickness
Thickness determines both comfort and the finished look of your patio furniture cushions.
Dining chair seat cushions: 2"–4" thick
Deep seating cushions: 5"–8" thick
Back cushions: 4"–8" thick
👉 Rule of Thumb: Once your cushion is on the frame, the top should measure 18"–20" from the ground. This ensures the average person can sit comfortably with feet flat on the ground.
This is especially important for outdoor chair cushions used in dining sets or lounge seating.
Step 5: Double-Check Your Measurements
Write down your measurements in Width × Depth × Thickness format. Double-check before placing your order for patio cushions or Sunbrella cushions. Getting it right the first time means your new cushions will fit perfectly and last for years.
Why Custom Outdoor Cushions Are the Best Choice
Because outdoor furniture isn’t standardized, custom-made outdoor furniture cushions are the only way to ensure a flawless fit. At Cascadia, every cushion is handcrafted, whether you’re ordering patio furniture replacement cushions, outdoor chair cushions, or full sets of Sunbrella cushions.
With custom sizing and premium fabrics, your patio will look polished and feel comfortable season after season.
Final Thoughts
Accurate measuring is the foundation of great outdoor comfort. Whether you need patio cushions, outdoor cushions for patio furniture, or long-lasting Sunbrella cushions, following these steps ensures a perfect fit.
Download the [Outdoor Cushion Measuring Guide PDF] to make the process even easier. Then let Cascadia create cushions that fit your furniture—and your lifestyle—perfectly.