How to use it
- Choose lines or dots. Dots are easier to draw over and to erase around.
- Set the triangle side: 5 mm for small detailed drawings, 1 cm or 1/2 inch for school work.
- Pick A4 or Letter, download and print at 100%.
How isometric grids are built
Every triangle is equilateral, so the three sets of lines meet at 60°. Vertical lines are spaced at side × √3⁄2: about 8.66 mm apart for a 1 cm triangle. Each line of the PDF is checked for its angle.
Uses
Isometric sketches in technical drawing and design classes, game maps and level design, quilting and tiling patterns, and 3D lettering.
Questions
What is the difference between isometric and triangular graph paper?
They are the same grid of equilateral triangles. “Isometric” describes its use for 3D drawings; “triangular” describes its shape.
Why are there vertical lines and not horizontal ones?
In isometric projection the vertical edges of an object stay vertical, while the two horizontal axes are drawn at 30°. The grid follows the same three directions.