A micrometre (American spelling: micrometer, symbol µm), that is, one millionth of a metre. Also known as a micron.

To help compare different orders of magnitude this page lists lengths between 10^-6 and 10^-5 m (1 µm and 10 µm).

Distances shorter than 1 µm

• 1 µm is equal to
  • the side of square of area 10^-12 m²,
  • edge of cube of volume 10^-18 m³.
• 1.55 µm — wavelength of light used in optical fibre
• 6 µm — anthrax spore
• 6-8 µm — diameter of a human red blood cell
• 7 µm — diameter of the nucleus of typical eukaryotic cell
• 7 µm — width of strand of spider web ^*
• 1-10 µm — diameter of typical bacterium
• about 10 µm — size of a fog, mist or cloud water droplet

See also

• Orders of magnitude (length)

Orders of magnitude (length)

1 E-6 m | Micrómetro (unidad de longitud) | 1 E-6 m | 1 E-6 m | 1 E-6 m | 1 E-6 m