1 millimetre
From Infogalactic: the planetary knowledge core
![](/w/images/thumb/d/d9/Icons_1e-6m_to_1e5m_squares_512pixel.png/300px-Icons_1e-6m_to_1e5m_squares_512pixel.png)
A clickable mosaic of objects
at scales within direct human experience, from the micrometric (10−6 m, top left) to the multi-kilometric (105 m, bottom right).
at scales within direct human experience, from the micrometric (10−6 m, top left) to the multi-kilometric (105 m, bottom right).
To help compare different orders of magnitude this page lists lengths between 10−3 m and 10−2 m (1 mm and 1 cm).
- 1.0 mm – 1/1000 of a metre
- 1.0 mm – 0.03937 inches or 5/127 (exactly)
- 1.0 mm – side of square of area 1 mm²
- 1.0 mm – diameter of a pinhead
- 1.5 mm – length of average flea[1]
- 2.54 mm – distance between pins on old DIP (dual-inline-package) electronic components
- 5 mm – length of average red ant
- 5.56×45mm NATO – standard ammunition size
- 6 mm – approximate width of a pencil
- 7.62×51mm NATO – common military ammunition size[2]
- 8 mm – width of old-format home movie film