How to Make Poster Size in PowerPoint

Updated on:

May 25, 2026

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Use this interactive demo to learn how to set a custom poster size in PowerPoint in minutes.

Quick summary

PowerPoint's Custom Slide Size feature lets you set exact poster dimensions — such as 36×24 inches — directly from the Design tab. This step-by-step walkthrough shows you how to configure and confirm your poster size settings in just a few clicks.

Steps

Go to the Design tab in PowerPoint.
Click the Slide Size button on the Design ribbon.
Select Custom Slide Size from the dropdown menu.
Set the Width to 36 inches and the Height to 24 inches in the dialog box.
Click OK to apply the custom poster dimensions.
Choose your preferred Scaling Option when prompted to finalize the layout.

📌 Why this matters

Setting a poster size in PowerPoint is essential for anyone creating large-format print materials such as academic research posters, event banners, or marketing displays. PowerPoint's Custom Slide Size option gives users precise control over width and height dimensions, ensuring designs are print-ready at any scale. Getting this right from the start prevents costly reprints and layout distortion when files are sent to professional printers. This demo makes the process quick and foolproof for both beginners and experienced PowerPoint users.

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