---
title: "2 vs 3 vs 4 Inch Cushion: Same Foam, Different Look"
url: "https://cushionguide.com/answers/2-vs-3-vs-4-inch-cushion-difference/"
section: "The Cutting Table"
author: "Nate Kowalski, The Pattern Engineer of Detroit"
author_url: "https://cushionguide.com/masters/nate/"
published: "2026-05-26"
updated: "2026-05-26"
keywords: "2 inch vs 3 inch vs 4 inch cushion, bench cushion thickness, 4 vs 5 inch cushion, 32 density foam cushion, window seat cushion thickness"
---

# What's the difference between a 2, 3, 4 and 5 inch cushion?

*Four thicknesses, one foam. The number you pick changes the silhouette far more than the sit.*

Also asked as: Which is better, 2 or 3 inches?; 4 or 5 inch thickness foam?

> **The quick answer:** The difference between a 2, 3, 4 and 5 inch cushion is mostly the look: 2 in is a slim pad, 3 in a neat middle ground, 4 in noticeably plumper and 5 in the deepest standard option. All four use the same firm 32-density foam wrapped in polyester fiber, so 4 in and 5 in feel the same to sit on.

![Sand pinstripe cotton cushion on a slim pale wood bench under a window at the top of a white staircase](https://cushionguide.com/media/bench-cushions/sand-pinstripe-bench-cushion-stair-landing-1600.webp "A fine sand pinstripe keeps a bright stair landing calm while adding texture up close.")

## Key facts

- Thickness options: 2, 3, 4 and 5 in (5, 7.5, 10 and 13 cm).
- All thicknesses use 32-density foam (32 kg/m³, about 2.0 lb/ft³).
- Bench foam is wrapped in polyester fiber.
- 4 in and 5 in feel the same; only the look differs.
- 5 in can look heavy on smaller benches.
- 3 in is a solid middle ground for benches and window seats.
- Tufted cushions use a softer filling; firm foam is more practical on a timber bench.

## Four thicknesses on one bench

| Thickness | Look | Feel | Best for |
|---|---|---|---|
| 2 in (5 cm) | Slim, low-profile pad | Firm 32-density foam | A light pad; the thinnest standard option |
| 3 in (7.5 cm) | Fuller, still sits neatly | Same foam | Benches and window seats |
| 4 in (10 cm) | Noticeably plumper, sofa-like | Same foam | A plush look on a long bench |
| 5 in (13 cm) | Deepest standard option | Same as 4 in | Big benches; can look heavy on small ones |

## Why 4 and 5 inches sit the same

The foam doesn't change with the number, partner. Every thickness uses the same firm, long-lasting 32-density foam, about 2.0 lb/ft³ (32 kg/m³), wrapped in polyester fiber for a softer surface. The feel comes from the foam, and the foam is the same, so stepping from 4 in to 5 in adds 1 in (2.5 cm) of silhouette and nothing you would notice with your eyes closed.

The [foam density conversion](https://cushionguide.com/guides/foam-density-lb-ft3-kg-m3/) Pattern explains the numbers, the [foam firmness finder](https://cushionguide.com/studio/foam-firmness-finder/) sorts feel from look, and the [seat height calculator](https://cushionguide.com/studio/seat-height-calculator/) shows what each extra inch does at a table.

## A 71-inch timber bench that wanted to be a sofa

A buyer asked about a timber bench of about 26 x 71 in (65 x 180 cm): 4 in or 5 in, for something that felt more like a sofa? In feel, the two are identical, both 32-density foam in a polyester wrap. In look, 4 in already reads plush and sofa-like on a bench that size, while 5 in can tip into heavy.

The real wish, genuinely softer seating, lives in the tufted cushions, which use a softer filling. On a timber bench, though, firm foam is the practical call.

## Pick your number in five lines

1. Want a low-profile pad? 2 in (5 cm).
2. Bench or window seat, neat and comfortable? 3 in (7.5 cm).
3. Sofa-like look on a long bench? 4 in (10 cm).
4. Big bench that can carry the height? 5 in (13 cm).
5. Softer, not just taller? Look at tufted cushions instead.

> **Tailor's margin:** 4 in and 5 in bench cushions in the same 32-density foam feel identical; pick by looks, since 5 in can look heavy on a small bench.

> A 3 in (7.5 cm) cushion is the solid middle ground for benches and window seats: fuller than a pad, still neat.
>
> — Nate

## Buyer questions

**A common question:** What's the practical difference between 2, 3 and 4 inch cushions?

**The workshop's answer:** 2 in is a slim, low-profile pad; 3 in adds cushioning and a fuller look while still sitting neatly; 4 in is noticeably plumper, and 5 in is also offered. All use firm, long-lasting 32-density foam, and 3 in is a solid middle ground for benches and window seats.

**A common question:** What's the thinnest cushion you can make? Can I get 1 inch?

**The workshop's answer:** 2 in (5 cm) is the thinnest standard option and the recommended minimum for seating. Thinner pads can be custom made; piping works down to about 1.2 in (3 cm), but 0.8 in (2 cm) and 1 in pads are made without piping.

**A common question:** Can you make a 6 inch bench cushion?

**The workshop's answer:** Yes. 6 in (15 cm), 7 in and 8 in cushions are made. Expect a surcharge from 6 in up, usually paid through a small extra payment link; send length and width for a quote.

**A common question:** Can I stack two floor cushions instead of buying one thick one?

**The workshop's answer:** Yes. Two stacked 6 in cushions cost noticeably less than one 12 in cushion, and two 10 in (25 cm) cushions give about a 20 in (50 cm) seat. A foam base can also go under a tufted top for extra height.

## Questions buyers ask next

### Are tufted cushions softer than foam bench cushions?

Softer to the touch, yes. Tufted floor cushions use a tightly packed silicone-ball filling with no sponge and rate about 6-7 out of 10 for firmness: supportive and heavy, not bean-bag squishy.

### Does a thicker cushion change my seat height?

Yes, inch for inch. Going from 3 in to 5 in raises the seat by 2 in (5 cm), which matters at a dining table or under a window sill. Run your numbers before you order.

### Is 3 in thick enough for a window seat?

For most window seats, yes. 3 in is the middle ground: fuller than a 2 in pad, still neat under a sill, in the same firm 32-density foam as every other thickness.

## Related at the atelier

- [What cushion thickness do most people choose?](https://cushionguide.com/answers/most-popular-seat-cushion-thickness/): Most buyers choose a 3 or 4 in seat cushion, and 4 in (10 cm) is the standard for everyday seating.
- [How thick should a bench cushion be? Work back from seat height](https://cushionguide.com/guides/cushion-thickness-seat-height-calculator/): Subtract your bench height from the seat height you want, and the difference is your cushion thickness.
- [How firm is the foam? I want a bench seat I don't sink into.](https://cushionguide.com/answers/firm-high-density-foam-bench-cushion/): Very firm: the bench cushions use high-density foam of about 2.0 lb/ft³ (32 kg/m³), which supports you without sinking and holds its shape over time.
- [Will the cushion hold its shape on a bench that gets sat on every day?](https://cushionguide.com/answers/bench-cushion-hold-shape-daily-use/): Yes, a high-density foam bench cushion holds its shape under heavy daily use, and tufted cushions do too.
- [Bench Cushion Firmness in an Under-Stairs Nook: Seat vs Back](https://cushionguide.com/readings/autumn-leaf-cushion-panelled-under-stairs-nook/): For a bench cushion in an under-stairs nook, make the seat the firm, thick part and let the back stay softer, because a seat carries your full weight and a back only takes a lean.
- [Bench Cushion Thickness: Black and White Zigzag on a Storage Box](https://cushionguide.com/readings/black-white-zigzag-bench-cushion-primary-color-pillows/): For a bench cushion on a storage box, 4 in (10 cm) is the thickness most buyers settle on, and it raises the seat by exactly that much.
- [The best foam for a bench cushion depends on the bench](https://cushionguide.com/guides/best-foam-for-bench-cushions/)

*± 1/4 in — Nate*

---

Written by Nate Kowalski (https://cushionguide.com/masters/nate/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/answers/2-vs-3-vs-4-inch-cushion-difference/