Standard poster sizes: How to choose the right one.

Common poster dimensions for different uses.

When creating a poster, choosing the right size is one of the first and most important decisions. Different projects and locations call for different poster dimensions. If you are designing a poster for a shop window, a small A3 or A2 size often works well. For high-traffic areas like event venues or conference halls, larger formats like A1 or A0 are more eye-catching and can help convey any messages clearly.

Standard UK poster sizes often follow the ISO 216 A-series system, ranging from A4 at 210 × 297 mm through A3, A2, A1, and finally A0 at 841 × 1189 mm. There are also US sizing standards like the tabloid size at 11 × 17 inches. A poster of 24 × 36 inches is especially popular for movie posters, while 27 × 40 inches is the industry standard for movie posters in the United States of America.

Understanding the common dimensions helps you choose the right poster size for your poster and find the right balance between visibility, content layout, and printing costs. You can use Adobe Express to create posters of all different sizes. It’s easy to adjust your poster size, layout, colours, fonts, and text and then send your poster off to print.

How to pick the best poster size for your needs.

Choosing the best poster size depends on where your poster will be displayed, how much information it contains, and how far away viewers will be. A good rule of thumb is the larger the distance between the viewer and the poster, the larger the poster should be. For indoor environments like offices, smaller posters such as A3 or A2 are often ideal. For outdoor advertising or large indoor areas, consider A1 or A0 sizes to maximise visibility.

Also think about the content density. Posters with minimal text and bold visuals can still make a strong impact at smaller sizes. If your poster needs to include detailed information, charts, or fine print, a larger format will help keep everything readable. There are multiple different uses for posters within a business context, so it's best to really think about what message you want your poster to relay and whether it needs to inform, educate, empower, or advertise. Explore conference poster design templates and awareness poster templates for more ideas. With Adobe Express, you can quickly resize your designs or start from templates that match your project, giving you the flexibility to create posters that fit any space and purpose. Then, send your posters straight to print. Start editing printable poster templates now.

Digital vs. print: Poster size guidelines.

When designing a poster, it is important to plan for where and how it will be seen. Digital posters and printed posters require slightly different sizing and resolution considerations. Here is a quick guide:

1. Set the correct resolution.

For print posters, use a resolution of 300 DPI (dots per inch) to ensure sharp quality. For digital posters, 72 DPI is usually enough. Learn more about digital vs. print design.

2. Pick the right dimensions.

Printed posters must match standard sizes like A3, A2, A1, or A0 to avoid expensive custom printing. Digital posters can use screen-friendly dimensions like 1080 × 1920 pixels. It’s easy to resize your poster, regardless of whether you’re designing a friends poster, a green poster, a coffee poster, or an anime poster.

3. Check file formats.

For print, save your file as a high-quality PDF or TIFF. For digital use, JPEG or PNG formats are usually preferred for quick loading and sharing. Adobe Express lets you download your posters in various formats should you wish to share them digitally. Got the wrong format? Use the Adobe Express features to convert to JPG, PNG, or SVG.

4. Mind colour settings.

Use CMYK colour settings for print posters and RGB for digital posters to get the best colour accuracy. Learn more about colour modes and consistency, and then dive in to hundreds of free poster templates to begin working on your poster design.