Fibonacci spiral with squares SVG
The Fibonacci spiral drawn over its eight squares, which tile a 34 by 21 rectangle. The classroom diagram, as a clean line drawing.
Free for personal and commercial use, no sign-up. What you can do with it.
What is in the file
| Size | 100 × 63 mm (3.94 × 2.46 in), scales to any size |
|---|---|
| Pieces | One piece: it holds together when cut |
| Outlines to cut | 15: 1 outer edge and 14 cut-outs |
| Cut length | 1,187 mm at this size |
| Narrowest part | 1.5 mm at this size |
| Nodes | 160 curve and line segments |
Measured from the file. PNG: 2,000 × 1,279 pixels, transparent. About the three file types.
How fine is it at your size?
Scaling a design scales its finest detail too. Here is this one at seven sizes, from 1 to 12 inches on its longer side, with how many copies fit a 12 × 12 inch sheet or mat.
| Size, width × height | Narrowest part | Cut length | Fit on a 12 in sheet | Rule of thumb |
|---|---|---|---|---|
| 1 × 0.63 in (25 × 16 mm) | 0.38 mm | 301 mm | 140 | Too fine for most machines |
| 2 × 1.25 in (51 × 32 mm) | 0.76 mm | 603 mm | 40 | Fine detail: vinyl and paper only, weed with care |
| 3 × 1.87 in (76 × 48 mm) | 1.1 mm | 904 mm | 15 | Vinyl, card and thin sheet |
| 4 × 2.5 in (102 × 64 mm) | 1.5 mm | 1,206 mm | 8 | Vinyl, card and thin sheet |
| 6 × 3.75 in (152 × 95 mm) | 2.3 mm | 1,809 mm | 3 | Vinyl, card and thin sheet |
| 8 × 5 in (203 × 127 mm) | 3 mm | 2,412 mm | 2 | Any material, including 3 mm wood and acrylic |
| 12 × 7.5 in (305 × 190 mm) | 4.6 mm | 3,618 mm | 1 | Any material, including 3 mm wood and acrylic |
The narrowest part is the finest detail in the pattern. Below about half a millimetre it is too small to cut and may fill in when printed. How to open the file in Cricut, Silhouette and laser software.
Golden spiral 
Logarithmic spiral 
Square spiral 
Triangular spiral 
Hexagonal spiral 
Spiral of dots 
Spiral sun 
Triskelion 