- Pinch a rubber band at each end to lay the band flat. The distance from end to end is the flat band length.
- The width of the flat band measures how wide the band is, perpendicular to the length.
- The wall measures the thickness of the band.
What is the normal size of a rubber band?
Generally, rubber bands are numbered from smallest to largest, width first. Thus, rubber bands numbered 8–19 are all 1⁄16 inch wide, with lengths going from 7⁄8 inch to 31⁄2 inches. Rubber band numbers 30–35 are for width of 1⁄8 inch, going again from shorter to longer.