custom cut foam half circle

A custom cut foam half circle is the easiest way to get a crisp, professional fit on curved seating. Whether you're padding a bay window nook, a round bistro bench or a half moon chair pad, starting with foam cut to your exact radius saves hours of trimming and gives your cushion clean, even edges.

Where Half Round Foam Shines

A half round foam cushion works anywhere a rectangle just won't sit right. Popular projects include:

• Bay window seat foam for cozy reading corners
• Semicircle seat cushions for breakfast nooks and banquettes
• Half moon cushion foam for ottomans, pet beds and floor pillows
• Replacement cushion foam for worn patio or dining chairs

What to Look For

Density and Feel

High density upholstery foam holds its shape under daily use, while softer foams feel plush for occasional seating. Match firmness to how often the seat will be used.

Thickness and Measurements

Measure the straight edge (diameter) and depth carefully, and choose a thickness that suits the seat height. Consider wrapping the foam in batting for a fuller, rounded look under your fabric.

Find Your Fit

Ready to start your project? Browse the half circle foam options below and choose the size and firmness that fit your space.