Calculate print size at entered image PPI, then audit retained pixels, fill crop, effective PPI, and pixel differences for one exact target.
A quick decision brief for this specific tool
Final whole-pixel dimensions, entered image PPI and one exact target print width/height
Native physical size, target-fill retained pixels/crop percentage, effective PPI and signed pixel differences
Divide fixed pixels by entered PPI, then retain the largest source rectangle matching the exact target aspect ratio
Choose your path
Audit native print dimensions and exact target-rectangle sampling/crop arithmetic without assigning universal sharpness or quality categories.
Convert final pixel dimensions using the lab’s required image PPI.
Enter the exported file, provider PPI and exact ordered image rectangle.
Gets native size and effective target PPI without a generic quality verdict.
Quantify the fill crop before placing important content.
Enter the exact target aspect and inspect retained pixels/excluded percentage.
Can plan crop position with visible pixel consequences.
Separate image PPI from printer DPI and output processing.
Review signed pixel differences, then verify profile, bleed, resampling, sharpening and device requirements.
Does not treat arithmetic as proof of print quality.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
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With resampling off, fixed pixel dimensions divided by the entered image PPI give physical inches. Centimeters use the exact 2.54 cm per inch conversion.
native inches = pixels / entered PPIThe engine retains the largest source-pixel rectangle matching the target aspect ratio. It reports retained width/height and the percentage of source pixel area excluded by edge-to-edge fill.
retained aspect ratio = target width / target heightRetained pixels divided by exact target inches give effective image PPI. Signed pixel differences compare the retained crop with the entered PPI target; they do not prescribe resampling or certify print quality.
effective PPI = min(retained width/target width, retained height/target height)Updated: August 2026
A 6000×4000 file and an 18×12 target share the same aspect ratio, so the fill audit excludes no pixels. Effective target PPI is calculated from the exact target, not assigned a quality label.
Enter 8×10 as the exact image rectangle to quantify the narrower fill crop and retained pixel dimensions before deciding crop position, borders, bleed, or a different layout.
Copy required image PPI, final trim/image area, and file dimensions from the actual lab or printer workflow. Review signed pixel differences, then confirm resampling, profile, sharpening, bleed, substrate, and proofing separately.
Use the provider’s image PPI requirement and keep the output device’s DPI specification separate. Ask the provider when terminology is ambiguous.
Native size is only pixels divided by entered PPI. Decide acceptable detail, resampling, sharpening, substrate, viewing, and proof standards in the actual print workflow.
This tool converts final whole-pixel dimensions into physical size at the PPI you enter, then audits an edge-to-edge fill for one exact target rectangle. It does not choose a quality threshold or treat printer DPI as image PPI.