How to Print Poster Size With Microsoft Office

Word and PowerPoint don’t offer a documented option to split a poster across sheets. Set the poster’s real size first (PowerPoint: Design > Slide Size > Custom Slide Size, up to 56 inches), save it as a PDF, then have a print shop print it, or tile it on Letter or A4 paper with the Poster option in Adobe Acrobat Reader’s Print dialog.

Need a school or yard sale poster bigger than printer paper, with only Office and a home printer?

Pick Your Route First

Changing the size in the Print window won’t make a poster. The print dialog only offers paper your printer can take. The poster size is set in the app before you print, and the printing method depends on the equipment you have.

Your situation	Design in	Print with
Home printer, poster up to a few feet wide	PowerPoint or Word at the final size	Acrobat Reader Poster (tiles on several sheets you tape together)
Print shop or office large-format printer	PowerPoint at the final size (Word for smaller posters)	A PDF the shop prints in one piece
Printer driver has a poster or tiling mode	PowerPoint or Word	The driver’s own setting in Printer Properties
Old Publisher files	Move the design to PowerPoint	Either of the routes above

PowerPoint is the stronger choice for most posters. Microsoft documents its size limits, it handles big images and text boxes well, and Microsoft names it as the replacement for Publisher’s banners, signs and posters.

Set a Custom Poster Size in PowerPoint

These steps follow Microsoft’s Change the size of your slides page for PowerPoint for Microsoft 365, 2024, 2021, 2019 and 2016 on Windows. Set the size before you add content, since resizing a finished design can shift everything.

1. Open a new blank presentation and delete any extra slides. You only need one slide per poster.
2. On the Design tab, in the Customize group, select Slide Size > Custom Slide Size.
3. Type the Width and Height. For an 18 x 24 inch portrait poster, enter 18 in and 24 in. You can type cm or px after the number instead, with a space before the unit.
4. Choose Portrait or Landscape under Slides, then select OK.
5. If PowerPoint asks how to scale content, choose Maximize to keep content large on the bigger slide, or Ensure Fit to shrink it so nothing falls off the edge. On a blank slide either is fine.

Microsoft lists a minimum of 1 inch (2.54 cm, 120 px) and a maximum of 56 inches (142.24 cm, 720 px) for each side. A standard 24 x 36 inch poster fits without any scaling tricks. One presentation can’t mix portrait and landscape slides, so make a separate file for each orientation.

PowerPoint for Mac and the Web

• Mac: choose Design > Slide Size > Page Setup, enter the width and height, and select OK. PowerPoint then offers Scale or Don’t Scale for existing content. Microsoft lists the same 1 to 56 inch limits for Mac.
• Web: choose Design > Slide Size > Custom Slide Size. The web version takes inches only, from 1 to 56.

Set a Custom Page Size in Word

Word works for text-heavy posters and smaller sizes. In Word for Microsoft 365 on Windows:

1. Open the Layout tab (Page Layout in older versions).
2. Select Size > More Paper Sizes.
3. On the Paper tab, choose Custom size if it’s listed and type the Width and Height.
4. Set Apply to to Whole document and select OK.
5. Use Layout > Margins > Custom Margins to set even margins, such as 0.5 inch.

Word’s largest custom page is widely reported as 22 x 22 inches. Microsoft doesn’t state that limit on a current help page, so if Word rejects your numbers, that’s the likely reason, and PowerPoint is the way to go bigger. Ribbon labels can also vary slightly by version, so look for Size if Layout looks different. For the browser version, see how to change the paper size in Word for the web.

Design Tips for a Poster That Prints Well

• Images: a photo that looks sharp on screen can turn soft at 24 inches. Print shops commonly ask for around 300 pixels per inch at the final size, so a photo covering 10 inches of the poster needs roughly 3,000 pixels across. Posters viewed from across a room can usually get away with less.
• Text: headlines on an 18 x 24 poster often need 100 points or more to read from a distance. Zoom to 100% in the app to judge real size.
• Edges: keep important text at least half an inch from every edge. Most home printers leave an unprintable margin, and tiles lose a strip where they overlap.
• Half-size option: you can design at half size (12 x 18 for a 24 x 36 poster) and have it printed at 200%. Images still need enough pixels for the final size, so at design size they need about twice the usual density. This mainly helps with Word’s size limit.

Save a PDF for a Print Shop or Large-Format Printer

A PDF keeps your layout, fonts and size exactly as designed, and it’s what most print shops and office plotters expect.

1. In PowerPoint or Word, choose File > Export > Create PDF/XPS (or File > Save As and pick PDF).
2. Under Optimize for, choose Standard rather than Minimum size, so images keep their quality.
3. Name the file with its size, such as BakeSale-24×36.pdf, and select Publish.
4. Open the PDF and check the page size in the reader’s document properties. It should match the poster, not Letter.

Ask the shop two questions before you send it: do they need bleed (extra background past the trim line, often an eighth of an inch per side), and should the file be at final size? If they need bleed, make the slide that much larger and keep text well inside. Unusual fonts are safer embedded; here’s how to embed fonts in Word, PowerPoint and PDFs. More export options are covered in turning a PowerPoint into a PDF.

If you have your own large-format printer, open the PDF, choose File > Print, select the printer and a paper size or roll that matches the poster, and print at 100% (Actual size).

Print a Poster on Several Sheets With Acrobat Reader

This is the dependable home route. Adobe’s Print dialog has a Poster option that cuts a large PDF page into tiles that fit your printer’s paper, adding marks so you can trim and tape them together. It’s normally available in the free Acrobat Reader too, though Adobe’s help page doesn’t say which editions include it. Adobe’s poster and banner printing help describes the Poster option.

1. Save the poster as a PDF at its final size (previous section).
2. Open the PDF in Acrobat Reader and open the Print dialog. Adobe’s page says to select Print this file from the global bar; Ctrl + P (Command + P on a Mac) opens the same dialog. Menu layout can differ between Reader versions.
3. Pick your printer and the paper loaded in it, such as Letter.
4. Under Page Sizing & Handling, select Poster.
5. Set the options: Tile Scale at 100% prints the poster at its real size; Overlap repeats a strip on neighboring tiles (around 0.5 inch makes taping easier); Cut marks shows where to trim; Labels prints the file name and page number on each tile; Tile only large pages leaves normal-sized pages alone in a mixed PDF.
6. Check the preview to see how many sheets it will use, then select Print.

An 18 x 24 inch poster on Letter paper usually takes around six to nine sheets, depending on overlap and margins. Lay the tiles out in order using the labels, trim one edge of each overlap along the cut marks, line up the artwork and tape from the back. Gluing the tiles to a sheet of poster board keeps the seams flat.

To shrink or enlarge while tiling, change Tile Scale. At 50%, a 24 x 36 PDF prints as a 12 x 18 poster.

Use Your Printer’s Poster Mode

Some printer drivers can tile on their own. In the app’s print screen, select Printer Properties (or Printing Preferences) and look for a setting called Poster, Tiling, or Pages per Sheet with options such as 2 x 2 or 3 x 3. The name and location depend entirely on the printer maker and model, and many drivers don’t have it, so check your printer’s manual. If the steps for picking a printer and its settings are new, start with printing basics in Windows 11.

Don’t confuse this with Word’s Pages per sheet setting in its own print options. That one shrinks several pages onto one sheet, the opposite of a poster.

What Happened to Publisher’s Poster Printing?

Publisher used to be the Office app for this. It allowed pages up to 240 x 240 inches and printed large pages across several sheets, with overlap settings under File > Print > Layout Options. That’s over now.

Microsoft’s Publisher retirement notice says Publisher reached end of life in October 2026. Microsoft 365 subscribers lose access on or shortly after October 1, 2026, and support for perpetual versions such as Publisher 2021 ended October 13, 2026. Microsoft says owners of perpetual versions can still open and edit their files, but those versions are no longer supported. Microsoft recommends PowerPoint for banners, signs and posters.

If you have an old poster as a .pub file, open it in any copy of Publisher you still have and save it as a PDF. You can then print the PDF with Acrobat Reader’s Poster option, or use it as a reference to rebuild the design in PowerPoint.

Check Before You Print the Whole Thing

• Print one tile or one test page first and measure a known element, such as a 1-inch box, to confirm the scale is 100%.
• Make sure the print dialog isn’t set to Fit or Shrink oversized pages unless you want a smaller poster.
• Zoom the PDF to 100% and scroll over photos. Blocky edges on screen will look worse on paper.
• Check ink or toner. A dark background across nine sheets uses a lot.

Poster Printing Questions

What sizes should I use?

Common US poster sizes are 11 x 17, 18 x 24 and 24 x 36 inches. Outside the US, A3 (297 x 420 mm), A2 (420 x 594 mm) and A1 (594 x 841 mm) are common. Choose a size your print shop or tiling plan supports before you start designing.

Can I print a poster straight from Word without a PDF?

Only if your printer takes paper that large or its driver has a poster mode. Word doesn’t offer a tiling command that Microsoft documents, and printing a large page on Letter paper usually just shrinks it or crops it. The PDF route gives you Acrobat Reader’s Poster tiling.

Why does my poster look blurry when printed big?

The images don’t have enough pixels for the final size, or the PDF was saved with Minimum size. Use larger originals, re-export with Standard, and avoid enlarging small web images.

Can I make a long banner instead?

Yes. In PowerPoint, set a wide slide such as 56 x 12 inches and tile it with Acrobat Reader, or ask a print shop to print it on a roll. For a quick low-tech banner, put one large letter on each landscape Letter page and hang the pages in a row.

Next Step

Open PowerPoint, set a custom slide size that matches your poster, and drop in your headline and main image. Export a PDF, print a single tile at 100% with Acrobat Reader’s Poster option, and measure it before printing the rest.