SI Length Units Converter

From:	To:
yottameter [Ym] zettameter [Zm] exameter [Em] petameter [Pm] terameter [Tm] gigameter [Gm] megameter [Mm] kilometer [km] hectometer [hm] decameter [dam] meter [m] decimeter [dm] centimeter [cm] milimeter [mm] micrometer [µm] nanometer [nm] picometer [pm] femtometer [fm] attometer [am] zeptometer [zm] yoctometer [ym]	yottameter [Ym] zettameter [Zm] exameter [Em] petameter [Pm] terameter [Tm] gigameter [Gm] megameter [Mm] kilometer [km] hectometer [hm] decameter [dam] meter [m] decimeter [dm] centimeter [cm] milimeter [mm] micrometer [µm] nanometer [nm] picometer [pm] femtometer [fm] attometer [am] zeptometer [zm] yoctometer [ym]

The meter (American spelling) or metre (Commonwealth spelling) is the base unit of length in the International System of Units (SI) and the unit symbol is m. The meter is defined as the length of the path travelled by light in a vacuum in \(\frac{1}{299792458}\) of a second. The unit meter was orignially created in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 [km]. The unit meter was redefined in terms of prototype metre bar in 1799. The meter was redefined in 1960 in terms of a certain number of wavelengths of a certain emission line of kryption-86. The current definition was adopted in 1983 and slightly modified in 2002.

Table 1 - The multiples and submultiples of SI mass unit.

1 Yottameter [Ym] = \(1\times10^{24}\) meter [m] = \(1\times10^{21}\) kilometer [km]

1 Zeptometer [Zm] = \(1\times10^{21}\) meter [m] = \(1\times10^{18}\) kilometer [km]

1 Exameter [Em] = \(1\times10^{18}\) meter [m] = \(1\times10^{15}\) kilometer [km]

1 Petameter [Pm] = \(1\times10^{15}\) meter [m] = \(1\times10^{12}\) kilometer [km]

1 Terameter [Pm] = \(1\times10^{12}\) meter [m] = \(1\times10^{9}\) kilometer [km]

1 Gigameter [Gm] = \(1\times10^{9}\) meter [m] = \(1\times10^{6}\) kilometer [km]

1 Megameter [Mm] = \(1\times10^{6}\) meter [m] = \(1\times10^{3}\) kilometer [km]

1 kilometer [km]= \(1\times10^{3}\) meter [m] = 1 kilometer [km]

1 hektometer [hm] = \(1\times10^{2}\) meter [m] = \(1\times10^{-1}\) kilometer [km]

1 decimeter [dam] = \(1\times10^{1}\) meter [m] = \(1\times10^{-2}\) kilometer [km]

1 meter [m] = 1 meter [m] = \(1\times10^{-3}\) kilometer [km]

1 decimeter [dm] = \(1\times10^{-1}\) meter [m] = \(1\times10^{-4}\) kilometer [km]

1 centimeter [cm] = \(1\times10^{-2}\) meter [m] = \(1\times10^{-5}\) kilometer [km]

1 milimeter [mm] = \(1\times10^{-3}\) meter [m] = \(1\times10^{-6}\) kilometer [km]

1 micrometer [µm] = \(1\times10^{-6}\) meter [m] = \(1\times10^{-9}\) kilometer [km]

1 nanometer [nm] = \(1\times10^{-9}\) meter [m] = \(1\times10^{-12}\) kilometer [km]

1 picometer [pm] = \(1\times10^{-12}\) meter [m] = \(1\times10^{-15}\) kilometer [km]

1 femtometer [pm] = \(1\times10^{-15}\) meter [m] = \(1\times10^{-18}\) kilometer [km]

1 attometer [am] = \(1\times10^{-18}\) meter [m] = \(1\times10^{-21}\) kilometer [km]

1 zeptometer [am] = \(1\times10^{-21}\) meter [m] = \(1\times10^{-24}\) kilometer [km]

1 zeptometer [am] = \(1\times10^{-24}\) meter [m] = \(1\times10^{-27}\) kilometer [km]