How to Choose Paper Size in AutoCAD
The paper list depends on the selected output device. Choose the device first, then the exact paper, and remember that printable area can be smaller than the nominal sheet.
Start here — what you are going to do
Your goal: Choose the correct paper definition before arranging margins or scale.
Where to start: Project/office standard.
Beginner rule: Follow the steps in order. Do not change several plotting settings at once. After an important change, use Preview or make one test output before continuing.
Step by step — follow this in AutoCAD
Step 1 — Know the required sheet
Where: Project/office standard.
Do this: Identify A3/A1/ANSI/ARCH or other actual deliverable size before AutoCAD.
Check: The nominal paper is known.
Step 2 — Open Page Setup
Where: Output > Page Setup Manager > Modify.
Do this: Open the target Layout setup.
Check: Device and Paper Size fields are visible.
Step 3 — Choose the device first
Where: Printer/Plotter > Name.
Do this: Select the real PDF/printer/PC3.
Check: The Paper Size list refreshes.
Step 4 — Choose the exact paper
Where: Paper Size.
Do this: Select the correct standard/custom entry supported by that device.
Check: The page proportions are correct.
Step 5 — Check orientation and printable area
Where: Drawing Orientation and Layout dashed printable boundary/Preview.
Do this: Make sure required border stays inside the usable area.
Check: Nothing important lies outside printable area.
Step 6 — Save the setup
Where: OK > named Page Setup/Set Current.
Do this: Use a clear name such as A1 PDF.
Check: The paper definition is repeatable.
Beginner example
You need A1 but only A3 and A4 appear in the list. Check the selected printer or PC3 first. Paper sizes belong to the selected output device, so changing to the correct large-format device may make A1 available.
Understand what AutoCAD is doing
The device controls the paper list
AutoCAD displays paper sizes supported by the selected printer, plotter or PC3. If you change the device, the paper list can change too.
Nominal paper and printable area are different
An A1 sheet has a nominal physical size, but the device may not print to every edge. See Paper Sizes & Margins when borders are being clipped.
Name standards clearly
For repeated work, save a Create a Named Page Setup whose name tells users the paper and destination, such as A1 PDF MONO.
Useful next guides: Paper Sizes & Margins · Choose a Printer or Plotter · Page Setup for Beginners · Plot Preview
Common problems and what to check first
| What you see | What may be causing it | Check this first |
|---|---|---|
| Paper size is missing | Wrong device/PC3 or driver paper list | Choose the correct output device first and recheck Paper Size. |
| Plotter is not listed | Driver/queue missing or PC3 issue | Verify the printer outside AutoCAD, then inspect the AutoCAD device list. |
| Border is clipped on one device | Device printable area differs | Use the exact device paper definition and test its margins. |
| Works as PDF but not on plotter | Problem is downstream of PDF | Keep the correct PDF and troubleshoot viewer, driver, media and hardware. |
When you need a more repeatable workflow
Once this basic method works, stop rebuilding the same settings by hand. Save the proven choices in a named Page Setup for Beginners, use a prepared Layout when the sheet is recurring, lock any production viewport, and keep one verified PDF or physical plot as a reference. For larger drawing sets, move toward Sheet Set Manager or publishing rather than repeating a manual Plot operation on every sheet.
Official Autodesk references
Menus and device-specific options can vary by AutoCAD release, workspace and configured printer. These Autodesk pages are the primary references used for the workflow above.
Frequently asked questions
Why does the Paper Size list change when I choose another printer?
Paper choices come from the selected printer, plotter or PC3 configuration. Different devices can expose different standard and custom sizes.
Should I create a PC3 for every printer?
Not necessarily. A system printer can often be used directly. A PC3 is useful when you need AutoCAD-specific, repeatable device settings.
Why should I test the printer outside AutoCAD?
It separates operating-system or hardware problems from AutoCAD configuration problems. If the device cannot print normally outside AutoCAD, fix that layer first.
Explore more in AutoCAD Printing & Plotting Guide.