Yoctometre

Look up yoctometre in Wiktionary, the free dictionary.

The yoctometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: ym) or yoctometer (American spelling) is an SI measure of length that is equal to 10⁻²⁴ (yocto) of a metre. A yoctometre is equivalent to 1/100,000 the diameter of a proton or neutron.

1 ym = 1×10⁻²⁴ metre

In terms of relative length of units, a yoctometre ranks as follows: Planck length << yoctometre << zeptometre. A yoctometre is 1/1000 of a zeptometre (1 zeptometre (zm) = 1,000 yoctometres).

SI units of length

From smallest to largest (left to right). Commonly used units shown in bold italics.

yoctometre (1×10⁻²⁴ m) zeptometre attometre femtometre picometre nanometre micrometre millimetre centimetre decimetre metre (m) decametre hectometre kilometre megametre gigametre terametre petametre exametre zettametre yottametre (1×10²⁴ m)

Yoctometre

See also