Languages:

Unit prefixes of the International System of Units (SI)

In order to keep figures short and presentable, SI prefixes are often attached to units such as m (meter) or g (gram).

For example, a substance weighing 0.000 000 001 g may be described more simply as 1 ng (nanogram) or as 1000 pg (picograms).

Common prefixes of the International System of Units (SI) are:

p pico = 1 000 000 000 000th = 10-12
n nano = 1 000 000 000th = 10-9
µ micro = 1 000 000th = 10-6
m milli = 1 000th = 10-3
no prefix = 1
k kilo = 1 000 = 103
M Mega = 1 000 000 = 106
G Giga = 1 000 000 000 = 109
T Tera = 1 000 000 000 000 = 1012
Translation(s):

Español: Prefijos de las Unidades de Medida

Related publications:
    
FacebookTwitterEmail
  • ABC - DEF - GHI - JKL - MNO - PQRS - TUV - WXYZ
  • Themes covered
    Publications A-Z
    Leaflets

    Get involved!

    This summary is free and ad-free, as is all of our content. You can help us remain free and independant as well as to develop new ways to communicate science by becoming a Patron!

    PatreonBECOME A PATRON!