Heavy 1-inch grid with faint 1/4-inch subdivisions: the standard scale for tabletop battle maps and dungeon design.

Free printable dungeon map paper PDF. 1-inch grid with 1/4-inch subdivisions — the standard scale for D&D battle maps, dungeon design and tabletop RPGs.

Dungeon Map Paper | Free Printable D&D Grid PDF

Dungeon Map Paper

Lay out the dungeon's room sizes and corridor widths on the 1-inch grid first. Once the floor plan is correct, use the 1/4-inch subdivisions to add doors (which conventionally occupy 1/4 to 1/2 a major square), wall thickness (1/4 square is standard), and small terrain features.

Sketch in 5-foot units, refine in 1.25-foot

A traditional convention: stone walls are drawn at full 1/4-inch thickness (the width of one subdivision); wooden walls or partitions are drawn as a single line. The reader can tell at a glance which walls are destructible.

Use thick walls for stone, thin for wood

Standard dungeon-design practice: assign each room a number before writing the key. Numbering as you draw (1, 2, 3 …) makes the key easier to follow and prevents the all-too-common 'where did room 7 go?' problem.

Number rooms before describing them

First-pass exploration of room arrangements is best done in pencil — you'll erase and revise. Once the layout's settled, ink the walls in a bold, dark line; pencil shows up faintly under ink in case you need to refer back, but the final map prints and copies cleanly.