How to Print a Battle Map at True Scale When Your Printer Offers “Fit to Page”

For a gridded map, true scale means the physical distance between grid lines matches the map’s stated cell size. A PDF page can be larger than a home printer’s paper, and the map artwork may occupy only part of that page. So the page’s dimensions alone do not prove the grid is correctly sized: check a labeled scale bar or the intended grid-cell measurement, if the file provides one.

For example, if the map is designed for 1-inch squares, a printed square should measure 1 inch from one grid line to the next. That is an example, not a universal tabletop standard; use the cell size specified for your map and game setup. For metric maps, measure in millimetres or centimetres and keep the same units throughout.

Fit options enlarge or reduce the page image so it fits the selected sheet. Adobe describes its Fit setting as scaling small pages up and large pages down, while “Shrink oversized pages” reduces only pages that are too large. Either can change a grid’s physical dimensions. Adobe’s scaling guide

Printers also have an unprintable area near paper edges. A print dialog or driver may scale content to fit that area even when the paper size seems right. Keep scaling under one control: Canon’s driver guidance says that if the application already provides scaled printing, set the scale there rather than applying the same scaling again in the printer driver. Canon’s scaled printing instructions

Open the map PDF in a PDF reader with a print dialog that offers page sizing controls. In Acrobat or Reader, open Print and select Actual Size if available, or choose Custom Scale and enter 100%. Avoid Fit, Fit to printable area, Shrink, or similarly named options when the goal is to preserve the PDF’s current dimensions. Adobe documents its percentage-based custom scaling option separately from automatic Fit and Shrink settings. Menu labels can vary by app and version.

Before printing, check the paper size in both the print dialog and printer settings. It should match the paper loaded, such as Letter or A4. If the dialog offers “Choose paper source by PDF page size” or orientation controls, verify the preview still shows the full intended map. Do not select borderless enlargement just to remove white margins: it can enlarge the artwork and alter the grid.

If the map is larger than one sheet, use a poster or tile setting rather than fitting the entire map onto a single page. In Acrobat, choose Poster under Page Sizing & Handling and set Tile Scale to 100% when the PDF artwork is already at its intended physical size. Acrobat’s poster mode splits one page across sheets and offers overlap, cut marks, labels, and a live preview. Adobe’s poster-printing guide

A tile overlap gives adjacent sheets shared material to align or trim. Choose an overlap that leaves enough visible content to match neighboring sheets, and enable cut marks if you will trim the edges. The exact assembly depends on the printer’s margins and the PDF layout; inspect the preview to see how many pages the map will occupy and whether any map edge appears clipped. Tiling controls how the page is divided, while the tile-scale percentage controls its size.

Before committing to a full multi-page print, print one page containing a representative grid section and, if possible, the map’s scale bar. Measure from the centre of one grid line to the centre of the next; measuring line-centre to line-centre avoids small differences from line thickness. Also check a second square or a longer scale bar, because a single reading can be affected by ruler placement.

If the target cell is 1 inch and the test measures 0.96 inch, the print is smaller by a factor of 0.96. A correction can be calculated as target measurement ÷ measured result × 100: 1 ÷ 0.96 × 100 = about 104.2%. This is an illustrative calculation. Apply a correction only when the test shows a consistent error, then reprint and measure again. If width and height differ by different amounts, the page may be distorted or a measurement may be off; uniform print scaling should change both dimensions by the same proportion.

If the test square is correct but the assembled map is not, check that all tiles came from the same print job and paper-size settings. When aligning sheets, use the grid lines or overlap marks rather than the sheet edges, since printer margins can leave uneven white borders.

If every square is uniformly too small or large, look for a Fit or Shrink option in the PDF app and another scaling option in the driver. Disable automatic scaling in one place and use a single deliberate percentage. If only one dimension is off, check whether the map image itself was stretched before export; changing print percentage scales both directions together and will not repair a distorted source image.

If the map’s grid is smaller than the source says it should be even at 100%, the PDF may contain artwork placed at a different size than intended. Use the file’s scale bar or stated cell measurement to calculate the required percentage, then verify with a test print. If there is no stated physical scale and no reliable reference measurement, you can preserve the PDF’s 100% size, but cannot infer a particular tabletop grid size from the image alone.

Confirm the intended cell size from the map file, match the print-dialog paper size to the loaded paper, and select Actual Size or 100%. For maps larger than one sheet, select Poster or Tile, inspect the preview, and keep the tile scale at 100% unless the source requires a documented correction. Print and measure a test square before printing every page; then assemble by matching grid lines and overlap marks.

The useful check is physical: the printed grid measures what the map specifies. Once it does, the tiles can be assembled without relying on the printer’s page-fit preview as evidence of scale.

• Scale or resize printed pages in Acrobat and Reader — Adobe Acrobat Help.
• Print large-sized documents — Adobe Acrobat Help.
• Scaled Printing — Canon PIXMA MG3000 series online manual.