A hands-on kind of geometry · from a flat page to a solid idea

Printable nets for 3D shapes

Choose a cube, rectangular prism, or square pyramid net, set its size in millimeters, then print, cut, and fold. Every net has dashed fold lines, labeled faces, and optional glue tabs.

Your printable netA4 · PORTRAIT
Geometry Lab · Cube net30 mm · solid: cut · dashed: foldFrontRightBackLeftTopBottom20 mm scale check · print at 100% · geometrylab.net
Solid lines: cut · dashed lines: foldDimensions in millimeters

Build something tangible.

Print on A4 at 100% scale. Turn off browser headers and footers. The 20 mm reference line lets you check the printed size.

Cut, fold, connect.

  1. Cut along the solid outline, including any glue tabs.
  2. Fold inward along each dashed line.
  3. Apply glue to the tabs and bring neighboring faces together.

For the pyramid, “slant height” is the altitude of a triangular face. It must be greater than half the base width to create a non-flat pyramid.

A little question. A clearer picture.

Printable nets: common questions

Wondering about the why? Start here.

How do I print a net at the right size?

Print on A4 paper at 100% scale (not “fit to page”) and turn off browser headers and footers. Measure the 20 mm reference line at the bottom of the page; if it is 20 mm, every edge is printed to the size you chose.

What is the net of a square pyramid?

A square base with four triangles attached to its sides. Each triangle’s height is the pyramid’s slant height, which must be more than half the base width so the faces can meet at a point.

Pyramid volume and surface area
How many different nets does a cube have?

A cube has 11 different nets, not counting rotations and reflections. This generator uses the familiar cross-shaped net: four faces in a row with one face above and one below.

Which edges get glue tabs?

Tabs go on outside edges that must join another face. A cube or rectangular prism net needs seven glued seams to close; a square pyramid needs four. Fold every dashed line inward before gluing.