foam cutting knife

A good foam cutting knife is the difference between a cushion that looks professionally made and one with ragged, uneven edges. Whether you're replacing seat cushions, building a window bench pad, or shaping foam for a craft project, the right tool slices cleanly through upholstery foam without tearing or squashing it.

Choosing the Right Cushion Foam Cutting Tool

Electric Foam Cutter

An electric foam cutter uses reciprocating blades to glide through thick, dense foam with little effort. It's the go-to upholstery foam cutter when straight, square edges matter.

Serrated Foam Knife

A manual serrated foam knife is easy to control and handy for thinner foam, quick trims, and smaller projects where you want a steady, hands-on cut.

Hot Wire Foam Cutter

A hot wire foam cutter melts through rigid foams like polystyrene, making it better suited to crafts and detailed shapes than to soft cushion foam.

What to Look For

• Blade length that matches the thickness of your foam
• A comfortable grip for long, steady cuts
• Replaceable foam cutting blades to keep edges sharp

Ready to cut with confidence? Browse our foam cutting tools below and find the right fit for your next cushion or upholstery project.