A window seat is only as comfortable as its cushion — and almost no window seat is a standard size. We cut window seat cushions to your measurements, including the bay-window angles and L-shaped nooks that off-the-shelf pads never fit.
Measuring your window seat
Measure the seat surface itself — not the old cushion, which may have compressed or been cut short. Record the width and depth at the widest points, working to ±¼″. For bay windows, either split the run into two straight cushions with a seam at the angle, or send us the trapezoid dimensions — the bench cushion configurator prices trapezoids instantly. Corner nooks are a job for the L-shape option.
If you're starting from scratch, the measuring guide covers the full method with diagrams.
How thick should a window seat cushion be?
3″ is the sweet spot for most window seats — enough loft to be comfortable for reading, low enough to keep sightlines over the backrest. Go 2″ for a firmer, more architectural look, or 4″ on deep window benches used daily for lounging. Our thickness guide walks through the trade-offs.
Which foam?
For seats that get daily use, choose HD36 firm foam — it holds its shape for years of reading and coffee. For a decorative perch used occasionally, HD28 standard foam is the budget-friendly choice. Both are priced by the board foot in the configurator, so you can compare the difference on your exact size.
Fabric that lives by the window
Sunlight is hard on fabric. Our linen blend is the popular choice for window seats, and every colorway is photographed exactly as it looks. For nooks that double as guest sleeping, add a Dacron wrap for a softer, fuller look — it's priced by your actual area, so you can compare with and without.