Isometric Graph Paper
A triangular lattice of lines at 30°, 90°, and 150°, used to draw 3D objects, cubes, and pseudo-isometric game art without perspective distortion.
Last updated: August 8, 2026
Settings shown use a 1/4 inch triangle side on US Letter — change anything you like below.
What makes a grid "isometric"?
Isometric graph paper is built from three families of parallel lines set 60° apart from each other: one vertical, one tilted 30° above horizontal to the right, and one tilted 30° above horizontal to the left. Together they form a lattice of equilateral triangles. Because all three axes are drawn at equal angles, a cube sketched along those lines appears with all faces at the same visual scale — no vanishing points, no perspective foreshortening. This makes isometric paper the standard tool for technical illustration, packaging mockups, pixel-art style game backgrounds, and dungeon or floor-plan sketches in tabletop game design.
Choosing a triangle side length
The "spacing" value here controls the length of each triangle's side, not a row height. A 1/4 inch side is a comfortable general-purpose size for hand-drawn cube sketches; drop to 1/8 inch or 2 mm for dense technical work, or go up to 1/2 inch (0.5 in, typed into the custom field) for large, bold shapes that are easy to ink over.
Drawing tips
Sketch cube edges by following the grid lines directly — vertical edges run straight up the page, and the two receding edges follow the 30° diagonals. Enable "Heavier line every N" to get a bolder reference line every few triangles, which makes it much faster to count units when blocking out a larger isometric scene.
What angles does isometric graph paper use?
Three families of lines set 60° apart: one vertical, one tilted 30° above horizontal to the right, and one tilted 30° to the left, forming a lattice of equilateral triangles.
What is isometric paper used for?
Sketching 3D objects and cubes without perspective distortion — technical illustration, packaging mockups, pixel-art style game backgrounds, and tabletop game map design.
What triangle side length should I use?
1/4 inch is a comfortable general-purpose size for hand-drawn cube sketches. Drop to 1/8 inch or 2 mm for dense technical work, or go up to 1/2 inch for large, bold shapes.
Can I add a bolder reference line?
Yes, turn on “Heavier line every N” to draw a bolder line every few triangles, which makes it faster to count units across a larger scene.