How to Change Pixels to Inches in Illustrator
Master document units, artboard dimensions, and raster effect settings in Adobe Illustrator.
Overview & Resolution Specifications
Adobe Illustrator is a resolution-independent vector graphics application, but setting document units to inches is critical when designing print collateral, packaging, and signboards.
Step-by-Step Instructions
Open Document Setup
Ctrl + Alt + PGo to File > Document Setup or press Ctrl+Alt+P (Cmd+Option+P on Mac).
Set Units to Inches
Under the General section, click the Units dropdown and select "Inches". Click OK.
Right-Click Workspace Rulers
Ctrl + RPress Ctrl+R to reveal rulers, right-click the top or side ruler bar, and choose "Inches" for instant unit switching.
Configure Raster Effects to 300 PPI
Go to Effect > Document Raster Effects Settings and verify Color Model is CMYK and Resolution is set to High (300 ppi).
Edit Artboards in Inches
Press Shift+O to enter Artboard mode. The Properties panel now displays width and height in physical inches.