Units of Mass
| Submultiples | Multiples | |||||
|---|---|---|---|---|---|---|
| Value | Symbol | Name | Value | Symbol | Name | |
| 10−1 g | dg | decigram | 101 g | dag | decagram | |
| 10−2 g | cg | centigram | 102 g | hg | hectogram | |
| 10−3 g | mg | milligram | 103 g | kg | kilogram | |
| 10−6 g | µg | microgram (mcg) | 106 g | Mg | megagram (tonne) | |
| 10−9 g | ng | nanogram | 109 g | Gg | gigagram | |
| 10−12 g | pg | picogram | 1012 g | Tg | teragram | |
| 10−15 g | fg | femtogram | 1015 g | Pg | petagram | |
| 10−18 g | ag | attogram | 1018 g | Eg | exagram | |
| 10−21 g | zg | zeptogram | 1021 g | Zg | zettagram | |
| 10−24 g | yg | yoctogram | 1024 g | Yg | yottagram | |
| Common prefixes are in bold face. | ||||||
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.
Read more about this topic: Orders Of Magnitude (mass)
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