Unfold an octahedron into 8 equilateral triangles — printable, with exact dimensions
An octahedron net unfolds the 8 equilateral triangle faces into a flat pattern. This calculator draws a zigzag strip net with fold lines, dimension labels, volume, and surface area.
The regular octahedron is one of the five Platonic solids — 8 faces, 6 vertices, 12 edges. Think of it as two square pyramids glued base-to-base. It's also the shape of a D8 die.
Every net is printable — use the share/export button to save, then print and fold into a real octahedron.