Cushion Thickness Guide: How Thick Should a Cushion Be?
As a rule of thumb, seat cushions are 2–4 inches (5–10 cm) thick, bench and window-seat cushions 2–3 inches (5–8 cm), deep-seating and daybed cushions 4–6 inches (10–15 cm), and slim decorative or floor cushions 1–2 inches (2.5–5 cm). Thicker foam feels softer and sits higher; thinner foam feels firm and tailored. In the customizer you set the exact thickness.
The fit guarantee window is 14 days from delivery. How the fit guarantee works
Set your thickness on these
Cushion thickness — answered
How thick should a seat cushion be?
Most seat cushions are 2–4 inches (5–10 cm) thick. Use 2 inches (5 cm) for firm dining and kitchen chairs, 3 inches (7.5 cm) for everyday benches, and 4 inches (10 cm) where you want a softer, higher seat. Sofa seats usually go 4–5 inches (10–13 cm).
Is a thicker cushion always more comfortable?
No. Comfort comes from thickness and foam density together. A 4-inch (10 cm) soft foam can bottom out under weight, while a 2–3 inch (5–8 cm) high-density foam stays supportive. For daily-use seating, choose a firmer density rather than just more thickness.
How thick should an outdoor deep-seating cushion be?
Deep-seating patio and daybed cushions are typically 4–6 inches (10–15 cm), using quick-dry outdoor foam so they don't hold water. Slimmer chair pads for bistro sets are usually 2 inches (5 cm).
Does the fabric cover change the thickness?
Slightly. If your cushion fits into a tight frame or under a table, tell us before you order so the finished cushion still fits. Unsure? Send a photo on WhatsApp and we'll advise.
Can I choose any thickness?
Yes. In the customizer you enter the exact thickness in inches or centimetres and we cut the foam to it.
Still not sure how thick to go? We'll help — free.
Tell us the furniture and how you use it — we'll recommend a thickness. No obligation, no pushy sales.
Get thickness advice
Key facts
- Units
- Sizes can be entered in inches or centimetres on each product page.