Proof an A4 and US Letter printable before sending it

Distinguish paper size from the design inside it

A planner page can look correct on screen and still print too small. Separate the PDF page size, the design dimensions inside that page, and the printer’s scaling choice. A file called planner-A4.pdf does not establish any of those facts. Open the downloaded PDF’s page properties and check each version rather than relying on its filename.

A4 is 210 × 297 mm. US Letter is 215.9 × 279.4 mm, or 8.5 × 11 inches. Letter is wider and shorter; the same edge-to-edge composition will not fit both identically. The dimensions are documented by Adobe. Use a length converter when your source application and printer show different units.

Adobe: A4 and US Letter dimensions ↗

Work through a shared-content example

Suppose the useful planner content measures 150 × 240 mm. Centering it on A4 leaves horizontal margins of (210 − 150) ÷ 2 = 30 mm and vertical margins of (297 − 240) ÷ 2 = 28.5 mm. The corresponding Letter margins are 32.95 mm and 19.7 mm. The content can remain the same physical size while the surrounding space differs.

This is a layout example, not a universal safe-margin specification. Your printer has its own printable area. Keep page numbers, writing lines and cut guides inside that area. If the design needs full bleed or a prescribed cut size, obtain the printer’s requirements and make a separate proof rather than assuming a home-print setting will work.

Content: 150 × 240 mm
A4 margins: left/right 30 mm; top/bottom 28.5 mm
Letter margins: left/right 32.95 mm; top/bottom 19.7 mm

Measure one page before printing the set

Add a clearly labeled 100 mm reference line to a proof copy in your authoring application. Include a vertical reference as well if both axes matter. Print only that page, using the intended paper tray, page size and orientation. Adobe’s Actual size setting avoids scaling, while Fit adjusts the page to the printable area and can change dimensions; content outside the printable area may be clipped at actual size.

Measure the line with a physical ruler. If a 100 mm line prints as 94 mm, the observed scale is 94 ÷ 100 = 94%. Check the paper and scaling selections before compensating with an arbitrary enlargement. A correction that fixes one print dialog may be wrong on another computer. Keep the successful setting with your proof record.

Expected reference: 100 mm
Measured reference: 94 mm
Observed scale: 94%
Next check: selected paper, printable area and scaling

Adobe: print scaling, fit and actual size ↗

Finish with a small delivery audit

Reopen both approved PDFs and compare the first and last pages. Check page count, orientation, blank pages and whether a heading or footer was lost at a page break. Check the count in your PDF reader; KitForma’s PDF-to-images tool is useful for a quick visual preview, but a preview cannot establish physical print scale.

Name the files clearly, such as weekly-planner-A4-v2.pdf and weekly-planner-Letter-v2.pdf. Keep the source layout and proof notes. If you combine instructions and pages with PDF Merge, inspect the merged download too: combining pages does not automatically normalize their dimensions. Tell the recipient which file matches their paper and which print setting you verified.

1. Inspect each PDF’s actual page size.
2. Check important content against the printable area.
3. Print one reference page and measure it.
4. Review every final page and the merged download if used.
5. Deliver separately named A4 and Letter versions with tested instructions.