---
type: guide
title: "Guide to Large-Format Poster Sizes"
description: "Large poster sizes explained: the common 18 x 24, 24 x 36, and 36 x 48 dimensions, how to pick by viewing distance, and when to go custom."
resource: https://www.4over4.com/guide/guide-to-large-format-poster-sizes
tags: ["guide"]
timestamp: 2026-07-20T18:54:40.856Z
---

# Guide to Large-Format Poster Sizes

Large poster sizes explained: the common 18 x 24, 24 x 36, and 36 x 48 dimensions, how to pick by viewing distance, and when to go custom.

See [all guide concepts](index.md).

- Page type: guide
- URL: https://www.4over4.com/guide/guide-to-large-format-poster-sizes