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Orders of magnitude (mass)
To help compare different orders of magnitude, the following lists describe various mass levels between 10−40 kg and 1053 kg.
==Units of mass==
The table below is based on the kilogram (kg), the base unit of mass in the International System of Units (SI). The kilogram is the only standard unit to include an SI prefix (''kilo-'') as part of its name. The ''gram'' (10−3 kg) is an SI derived unit of mass. However, the ''names'' of all SI mass units are based on ''gram'', rather than on ''kilogram''; thus 103 kg is a ''megagram'' (106 g), not a "kilokilogram".
The ''tonne'' (t) is a SI-compatible unit of mass equal to a megagram, or 103 kg. The unit is in common use for masses above about 103 kg and is often used with SI prefixes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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