Gram, oznaczenie g – jednostka masy, jednostka podstawowa w układzie jednostek miar CGS[1] (Centymetr Gram Sekunda).
| nazwa | oznaczenie | w [g] | w [kg] |
|---|---|---|---|
| quectogram | qg | 10−30 | 10−33 |
| rontogram | rg | 10−27 | 10−30 |
| joktogram | yg | 10−24 | 10−27 |
| zeptogram | zg | 10−21 | 10−24 |
| attogram | ag | 10−18 | 10−21 |
| femtogram | fg | 10−15 | 10−18 |
| pikogram | pg | 10−12 | 10−15 |
| nanogram | ng | 10−9 | 10−12 |
| mikrogram | µg | 10−6 | 10−9 |
| miligram | mg | 10−3 | 10−6 |
| centygram | cg | 10−2 | 10−5 |
| decygram | dg | 10−1 | 10−4 |
| gram | g | 1 (100) | 10−3 |
| dekagram | dag | 101 | 10−2 |
| hektogram | hg | 102 | 10−1 |
| kilogram | kg | 103 | 1 |
| megagram (tona) | Mg | 106 | 103 |
| gigagram | Gg | 109 | 106 |
| teragram | Tg | 1012 | 109 |
| petagram | Pg | 1015 | 1012 |
| eksagram | Eg | 1018 | 1015 |
| zettagram | Zg | 1021 | 1018 |
| jottagram | Yg | 1024 | 1021 |
| ronnagram | Rg | 1027 | 1024 |
| quettagram | Qg | 1030 | 1027 |