Free printable isometric paper: a grid of equilateral triangles with sides of 1/4 inch, 1/2 inch, 1 cm and other sizes, as lines or dots, on US Letter or A4. The lines run straight up and at 30 degrees to each side, the usual layout for drawing cubes and 3D shapes.
Class set
One copy for every student: type the first names and get one PDF, with each name on that student's own pages. Every student's pages use the same settings.
Link to this page
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This is the sheet as it prints. Change any option and it updates.
How the triangles are drawn
Every triangle on the sheet has three sides of the size chosen. The vertical lines are spaced at 0.866 of that side, the height of one triangle, and the slanted lines pass through every point where a vertical line is crossed, so all three directions meet at the same points. The grid fills whole columns inside a half-inch margin, and a small label under it names the triangle size. The PDF has no scaling: print at Actual size (100%) to keep that size.
Three examples
1/2 inch triangles in gray, the largest cells but one.
Isometric dot paper, 5 mm apart on A4: dots only, no lines.
1 cm triangles in black at the medium weight, with a Name line and the title.
Isometric sheets to print now
One-page PDFs in light blue on a portrait page. For gray or black lines, a Name line or landscape, set the generator above.
1/4 inch isometric grid Quarter-inch triangles on US Letter.Download the PDF
1/4 inch isometric dots A dot at every triangle corner and no lines, on US Letter.Download the PDF
Questions and answers
What is isometric paper used for?
Drawing objects in three dimensions without perspective: cubes, block towers, boxes and buildings, with each edge along one of the three line directions. It also suits tiling patterns built from triangles and hexagons.
How is isometric paper different from graph paper?
Graph paper is squares, its lines crossing at right angles. Isometric paper is triangles, its lines running in three directions 60 degrees apart. Square grids have their own page on this site, the graph paper generator.
What size are the triangles?
Pick the side length: 1/4 inch, 1/5 inch, 1/2 inch, 1 inch, 5 mm or 1 cm. The label under the grid prints the size, so a sheet found in a drawer later still says what it is.
What is isometric dot paper?
The same grid with a dot at each corner of each triangle and nothing between them. Choose Dots under Style. The dots stand in columns, every other column half a side lower, so joining three neighbors draws one triangle.
Can I print it in landscape or on A4?
Yes. Under Options choose Landscape, and pick A4 under Paper. The triangles keep their size; only how many columns and rows fit on the page changes.
