Objects
AI Assistant

Cylinder Net Generator

Unfold a cylinder into a rectangle + two circles — with exact dimensions

A cylinder net is a rectangle (the lateral surface) plus two circles (top and bottom bases). The rectangle's width equals the circumference 2πr and its height equals the cylinder height h.

Enter radius and height — the calculator draws the complete net with fold lines, dimension labels, volume, and surface area using 2πr² + 2πrh.

Every net is printable with mathematically exact measurements.

Graph

FAQ

What does a cylinder net look like?
A cylinder net has three parts: a rectangle (the curved lateral surface unrolled flat) and two circles (the top and bottom bases). The rectangle’s width is 2πr (the circumference) and its height is h.
What is the surface area of a cylinder?
Total surface area = 2πr² + 2πrh. The first term (2πr²) is the two circular bases, the second (2πrh) is the lateral surface.
Can I print this net?
Yes! The dimensions are exact. Save via the share/export button, then print. Add glue tabs along fold lines for assembly.
How do I find the rectangle width?
The rectangle width equals the circumference of the base circle: 2πr. For example, a cylinder with r=3 has rectangle width 2π(3) ≈ 18.85.