SI Mass Unit Converter

From:	To:
yottagram [Yg] zettagram [Zg] exagram [Eg] petagram [Pg] teragram [Tg] gigagram [Gg] megagram [Mg] kilogram [kg] hectogram [hg] decagram [dag] gram [g] decigram [dg] centigram [cg] miligram [mg] microgram [µg] nanogram [ng] picogram [pg] femtogram [fg] attogram [ag] zeptogram [zg] yoctogram [yg]	yottagram [Yg] zettagram [Zg] exagram [Eg] petagram [Pg] teragram [Tg] gigagram [Gg] megagram [Mg] kilogram [kg] hectogram [hg] decagram [dag] gram [g] decigram [dg] centigram [cg] miligram [mg] microgram [µg] nanogram [ng] picogram [pg] femtogram [fg] attogram [ag] zeptogram [zg] yoctogram [yg]

The SI base unit of mass is kilogram (kilograme) that has unit symbol kg. It is widely used measure in science, engineering and commerce worldwide. This unit was originally defined in 1795 as the mass of 1 litre of water. Although this was the simple definition it was very difficult to use it in practice. In 1799, the water was replaced with platinum, as the standard of mass, by Kilogramme des Archives. In 1889, the International Prototype of the Kilogram (IPK) (the cylinder of platinum-iridium) was adopted although the idea of prototype was defined at Metric Convention in 1875 and produced in 1879. It had a mass of 1 \(\left[\mathrm{dm}^3\right]\) of water under atmospheric pressure and at the temperature of its maximum density, at 4°C. In 2019, or to be precise on \(16^{\mathrm{th}}\) November 2018, the kilogram is redefined in terms of the Planck constant as approved by the General conference of Weights and Measures (CGPM). The current definition of the kilogram is defined in terms of three fundamental physical constants, and these are:

• speed of light \(c\),
• specific atomic transition frequency \(\Delta v_{C_s}\), and
• the Planck constant which is equal to \(6.62607015\times10^{-34}\)

The formal definition of kilogram is: The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be \(6.62607015\times10^{-34}\) when expressed in the unit \(J\cdot s\), which is equal to \(\mathrm{kg}\cdot \mathrm{m}^2\cdot\mathrm{s}^{-1}\), where the metre and the second are defined in terms of \(c\) and \(\Delta v_{C_s}\) In Table 1 the conversion table of mass units with multiples and sumbultiples is shown.

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

1 Yottagram [Yg] = \(1\times10^{24}\) gram [g] = \(1\times10^{21}\) kilogram [kg]

1 Zeptogram [Zg] = \(1\times10^{21}\) gram [g] = \(1\times10^{18}\) kilogram [kg]

1 Exagram [Eg] = \(1\times10^{18}\) gram [g] = \(1\times10^{15}\) kilogram [kg]

1 Petagram [Pg] = \(1\times10^{15}\) gram [g] = \(1\times10^{12}\) kilogram [kg]

1 Teragram [Pg] = \(1\times10^{12}\) gram [g] = \(1\times10^{9}\) kilogram [kg]

1 Gigagram [Gg] = \(1\times10^{9}\) gram [g] = \(1\times10^{6}\) kilogram [kg]

1 Megagram [Mg] = \(1\times10^{6}\) gram [g] = \(1\times10^{3}\) kilogram [kg]

1 kilogram [kg]= \(1\times10^{3}\) gram [g] = 1 kilogram [kg]

1 hektogram [hg] = \(1\times10^{2}\) gram [g] = \(1\times10^{-1}\) kilogram [kg]

1 decigram [dag] = \(1\times10^{1}\) gram [g] = \(1\times10^{-2}\) kilogram [kg]

1 gram [g] = 1 gram [g] = \(1\times10^{-3}\) kilogram [kg]

1 decigram [dg] = \(1\times10^{-1}\) gram [g] = \(1\times10^{-4}\) kilogram [kg]

1 centigram [cg] = \(1\times10^{-2}\) gram [g] = \(1\times10^{-5}\) kilogram [kg]

1 miligram [mg] = \(1\times10^{-3}\) gram [g] = \(1\times10^{-6}\) kilogram [kg]

1 microgram [µg] = \(1\times10^{-6}\) gram [g] = \(1\times10^{-9}\) kilogram [kg]

1 nanogram [ng] = \(1\times10^{-9}\) gram [g] = \(1\times10^{-12}\) kilogram [kg]

1 picogram [pg] = \(1\times10^{-12}\) gram [g] = \(1\times10^{-15}\) kilogram [kg]

1 femtogram [pg] = \(1\times10^{-15}\) gram [g] = \(1\times10^{-18}\) kilogram [kg]

1 attogram [ag] = \(1\times10^{-18}\) gram [g] = \(1\times10^{-21}\) kilogram [kg]

1 zeptogram [zg] = \(1\times10^{-21}\) gram [g] = \(1\times10^{-24}\) kilogram [kg]

1 yoctogram [yg] = \(1\times10^{-24}\) gram [g] = \(1\times10^{-27}\) kilogram [kg]