25 September 2026
Printing PDF plans to scale is essential when working with architectural drawings, construction plans, floor plans or technical documents. If a drawing is printed at the wrong size, measurements can become inaccurate and important details may be harder to interpret.
Fortunately, printing plans correctly is straightforward once you know what to check. From confirming the original PDF dimensions to choosing the right paper size, a few simple steps can help make sure your plans are clear, accurate and ready to use.
Check the original PDF dimensions
Before printing, start by checking the page size of the PDF. Plans are commonly created in standard paper sizes such as A0, A1 and A2.
The original document size is important because architectural and construction drawings are often designed to be printed at a specific size. If an A1 drawing is automatically resized to A3, for example, the scale shown on the original plan may no longer be accurate.
Most PDF readers will allow you to view the document properties or page dimensions before printing.
Confirm the scale shown on the drawing
Next, look for the scale stated on the plan. Common drawing scales include:
- 1:20
- 1:50
- 1:100
- 1:200
A scale of 1:100 means that 1 cm on the printed plan represents 100 cm in real life.
Many professional drawings also include a scale bar. This gives you another way to check whether the printed document has been reproduced at the correct size.
It is worth remembering that some drawings may contain the wording "do not scale from this drawing". In these cases, dimensions shown on the plan should always take priority.
Select the correct paper size
When preparing your PDF for plan printing, choose the paper size the drawing was originally designed for.
For example, if the document was created as an A1 plan, selecting A1 paper and printing it at its original size will normally preserve the intended scale.
Changing the paper size can still be useful if you simply need a smaller reference copy, but the original scale should not be relied upon unless the drawing has been resized correctly.
Use 100% or actual size
One of the most important settings to check is the print scaling option.
If maintaining the original drawing scale is important, select 100%, Actual Size or the equivalent setting in your PDF software.
Be careful with options such as Fit, Fit to Page or Shrink Oversized Pages. These settings automatically resize the document to fit the selected paper and can alter the scale of the drawing.
Even a relatively small percentage change can affect measurements taken directly from a printed plan.
Check the scale bar after printing
Once your plans have been printed, it is worth carrying out a quick check before using them on site.
If the drawing contains a scale bar, measure it with a ruler and compare it with the measurement it is supposed to represent. You can also check a clearly marked dimension on the drawing.
This simple check can help identify scaling problems before the plans are relied upon.
Common plan printing mistakes to avoid
Some of the most common problems occur when the wrong paper size is selected or when PDF software automatically changes the document size.
You should also check that the PDF is clear and high quality before uploading it. Thin lines, small annotations and detailed drawings can become difficult to read if the original file is low resolution.
Order your PDF plans with Plan Printing 24
Whether you need A0, A1 or A2 plans, getting the print size and scale right helps ensure your drawings remain clear, accurate and practical to use.
At Plan Printing 24, you can upload your PDF plans online and order high-quality prints for architectural, construction and technical projects, making it easy to get the drawings you need delivered ready for use.