How to print your drawing to the correct scale in AutoCAD?
Short Answer
To print your drawing to the correct scale in AutoCAD, use PLOT from a Layout and set a standard Plot scale such as 1:100 or 1/4″ = 1′-0″. This is the most common professional method because the viewport controls model scale reliably. Limitation: plotting from Model space is less consistent for sheet output.
What You Need to Know Before
Warning: If your drawing was not created at full size in Model space, the plotted scale can be wrong even when the Plot dialog shows the correct ratio. A locked viewport with an accidental custom zoom is also a very common reason printed sheets come out at the wrong scale.
How to Print to the Correct Scale in AutoCAD
Command: PLOT
Shortcut: Ctrl+P
Quick Steps:
- Go to a Layout tab, then press Ctrl+P or use Output tab > Plot panel > Plot.
- In the Plot dialog, choose your printer/plotter, paper size, and under Plot area select Layout.
- Set the viewport scale before plotting, then in Plot keep Plot scale = 1:1 for the Layout, optionally enable Center the plot, and preview before printing.
Variables & Settings
Key Setting: Display Locked on the viewport
Expert Setting: Lock the viewport after setting its scale so wheel zoom or pan does not change the view scale accidentally. Select the viewport, then set Display Locked = Yes in Properties.
Why it Fails
- Cause 1 (Geometry): The model was drawn at the wrong size, so a correct plot scale still prints incorrect real-world dimensions.
- Cause 2 (layers/Locks): The viewport is unlocked, and its scale was changed accidentally after the sheet was set up.
- Cause 3 (Command/Logic): Users plot from Model space with Fit to paper enabled, which overrides a true measured scale.
Quick Fix & Best Practice
- Quick Fix: Select the viewport, set a standard viewport scale from the status bar or Properties, then turn Display Locked to Yes before using PLOT.
- Manager’s Verdict: Use Layout plotting with full-size Model geometry and locked viewports for nearly all production sheets; avoid Model space plotting except for simple one-off output.
FAQ
Should I plot from Model space or Layout in AutoCAD?
Layout is the standard professional method because it controls sheet size and viewport scale more reliably.
Why does my printed scale look correct in preview but measure wrong on paper?
Your model may not be drawn full size, or the viewport scale may have been changed before plotting.
Do I use Fit to paper when plotting to scale?
No, because Fit to paper overrides a true plotting scale.
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