upholstery foam sheet sizes

Choosing the right upholstery foam sheet sizes is the first step toward a cushion that looks crisp and feels comfortable for years. Whether you are re-covering dining chairs, building a window seat, or padding a headboard, buying foam that fits your frame saves waste, cutting time, and money.

How to Measure for Foam

Measure the length and width of the seat or frame, then add a little extra if you plan to wrap the foam in batting for a fuller, rounded edge. Larger foam sheets give you room to cut several pieces, while pre-cut cushion foam suits standard seats.

Upholstery Foam Thickness and Density

Choosing Thickness

Thinner foam padding works well for headboards, wall panels, and chair backs. Thicker seat cushion foam suits benches, dining chairs, and daybeds that take daily weight.

Choosing Firmness

High-density foam holds its shape longer under regular use, while softer foam offers a plush, sink-in feel for backrests and accent pieces.

Find Your Foam Below

Compare the dimensions, thickness, and firmness noted in each listing, then pick the foam that matches your project. Browse our upholstery foam selection below to get started.