Page Size Converter
What is this?
If you've already created your PowerPoint file but must change the page aspect-ratio (proportion of width/height), this converter can help make your job easier by determining what new page size to make your file.
Consider other options
Changing the page size of a PowerPoint document after it's created can be a difficult task and may take a little practice. Be sure you want to do this.
Consider ordering a poster based on your current page size so you don't need to modify the file. (See our Poster Size Calculator to determine what sizes can be ordered from your file without modification.)