A4 Triangle Grid
Most countries210 x 297 mm (8.27 x 11.69 in)
International home, school, and office printing
Printable Triangle Grid
Printable Triangle Grid Paper
Choose the triangle side length, grid phase, and page orientation, then download the matching file.
Print at Actual Size or 100% so the prepared measurements stay accurate.
What is triangle grid paper?
Triangle grid paper uses three sets of evenly spaced lines to form repeating equilateral triangles. The grid provides accurate 60-degree directions and also makes hexagons, diamonds, and repeating geometric forms easy to construct.
Use it for geometry exercises, tessellations, quilting blocks, beadwork, mosaics, technical sketches, and pattern design. Smaller triangles suit detailed constructions, while larger triangles leave more room for coloring, labels, and classroom work.
Which paper size should I choose?
Check the size printed on your paper pack or shown in the printer tray. A4 is standard in most countries, while US Letter is standard in the United States and Canada. Choose a larger size only when your printer or print service supports it.
US Letter Triangle Grid
United States & Canada8.5 x 11 in (215.9 x 279.4 mm)
US home, school, and office printing
Large and special paper sizes
A3 Triangle Grid
297 x 420 mm (11.69 x 16.54 in)
Engineering sketches and larger diagrams
A2 Triangle Grid
420 x 594 mm (16.54 x 23.39 in)
Large plans, displays, and technical drawings
US Legal Triangle Grid
8.5 x 14 in (215.9 x 355.6 mm)
Long worksheets, calculations, and plans
Tabloid (11 x 17) Triangle Grid
11 x 17 in (279.4 x 431.8 mm)
Large handouts, plans, and presentation sheets
Poster Triangle Grid
18 x 24 in (457.2 x 609.6 mm)
Wall charts, maps, displays, and large plans
Which triangle size should you choose?
The choices below explain what changes and when each option is useful. Make the actual selection in the download panel at the top of the page.
5mm
A 5mm triangle grid creates a dense field for detailed tessellations, compact geometry, bead patterns, quilting plans, and fine technical sketches.
6mm
A 6mm triangle grid balances drawing detail and writing room for general geometry, pattern design, maps, diagrams, and classroom activities.
10mm
A 10mm triangle grid provides larger cells for bold constructions, labels, classroom demonstrations, quilting layouts, and designs that need more drawing room.
Point-up or flat-base grid phase?
The choices below explain what changes and when each option is useful. Make the actual selection in the download panel at the top of the page.
Point Up
The point-up option starts the diagonal line pattern in the phase that places an upward-pointing triangle at the upper grid edge.
Flat Base
The flat-base option shifts the first diagonal row by half a triangle side, changing the phase visible at the upper grid edge.
What is triangle grid paper used for?
Geometry and tessellations
Construct equilateral triangles, hexagons, 60-degree angles, transformations, and repeating tilings.
Craft and pattern design
Plan quilting blocks, beadwork, mosaics, embroidery, and other designs built from triangular units.
Maps and technical sketches
Lay out routes, structures, diagrams, and spatial systems that benefit from three drawing directions.
Frequently asked questions
Answers about choosing, downloading, customizing, and printing this paper.
What does the triangle size measure?
The listed size is the side length of each equilateral triangle.
What is the difference between Point Up and Flat Base?
Both options use identical triangle dimensions and line angles. Flat Base shifts the repeating pattern by half a triangle side, changing which part of the grid appears at the upper page edge.
Which file format should I download?
Choose PDF when you want to print at an accurate physical size. Use PNG for notes, worksheets, and image-based documents. Choose SVG when you need an editable vector file for a drawing or design application.
Should I choose portrait or landscape?
Portrait gives you more vertical working room for worksheets, notes, and tall diagrams. Landscape gives you more horizontal room for charts, maps, tables, timelines, and wide drawings. The prepared measurements stay the same in either orientation when you print at 100%.
Why did the paper print at the wrong size?
The print dialog probably scaled the page. Print the PDF at Actual Size or 100%, and turn off Fit to Page, Shrink, and other automatic scaling options. The paper size selected in the print dialog must also match the file you downloaded.
Can I customize this paper?
Yes. Open the triangle grid generator when the ready-made sizes or styles on this page do not match your project.
Open the Triangle Grid Generator →