Print D&D Battle Maps at Home: 1-Inch Grid Guide
Turn digital battlemaps into table-ready tactical maps with a precise 1-inch grid — using nothing but a home printer, free software, and tape.
Why 1-inch scale matters
Standard miniatures are built for a 1-inch grid. If your printed squares are even 5% off, miniatures drift, area effects misjudge, and the whole tactical feel breaks. Precision is the entire point — which is why tiled printing beats “zoom to fit” every time.
Step 1: Get the map to exact scale
Most VTT battlemaps (from Roll20, Dungeondraft, or artist Patreons) export at a fixed pixels-per-inch — commonly 70, 100, or 140 PPI. Before importing into PosteRazor:
- Confirm the export PPI of your map file (check the artist’s notes).
- In PosteRazor’s poster-size step, set the physical size so 1 grid square = 1 inch. A 3000×2000 px map at 100 PPI = 30×20 inches.
- Check the Effective DPI readout: 100+ is fine for tabletop viewing distance.
Step 2: Tile with overlap for seamless joins
Set the overlap margin to 10 mm and keep the alignment direction consistent (e.g., “Top Right”) on every page. Trim along the overlap edge with a craft knife and cutting mat rather than scissors for straighter seams.
Step 3: Print and assemble like a pro
- Print at 100% / Actual Size — disable “Fit to printable area” in your PDF reader.
- Do a proof print of 2 overlapping pages first and measure a grid square with a ruler. Adjust if needed.
- Assemble from the center outward so drift doesn’t accumulate at the edges.
- For reusable maps, laminate or slip pages into a poster frame instead of gluing.
New to the tool? Start with the complete PosteRazor tutorial or try the online version with no install.
Frequently asked questions
How many pages will my battle map need?
A 30×20-inch map on A4 (about 8×11 inches of printable area per sheet) needs roughly 12–15 sheets with overlap. PosteRazor shows the exact page count in its preview.
My grid squares print slightly small. Why?
Your PDF reader scaled the print. Reprint with “Actual Size” (100%) selected and uncheck any “fit” or “shrink” option.
Can I print maps from Roll20 or Foundry?
Yes — export the scene as an image at its native grid PPI, then tile it. Works with Dungeondraft, Inkarnate, and most map-maker exports too.
What’s the cheapest way to make maps reusable?
Print on 120 gsm paper and cold-laminate, or lay the assembled map under a clear PVC table cover. Dry-erase markers then work on top.