The density, or more precisely, the volumetric mass density of magnesium is 1738 kg/m³. This means that the mass of 1 m³ magnesium is 1738 kg.
The weight (on earth) of 1 m³ magnesium is 17049,78 N or 17,04978 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 1738 | kg/m³ |
| Tonne per cubic meter | 1,738 | t/m³ |
| Gram per cubic meter | 1738000 | g/m³ |
| Milligram per cubic meter | 1738000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,001738 | kg/cm³ |
| Gram per cubic centimeter | 1,738 | g/cm³ |
| Milligram per cubic centimeter | 1738 | mg/cm³ |
| Kilogram per litre | 1,738 | kg/L |
| Gram per litre | 1738 | g/L |
| Milligram per litre | 1738000 | mg/L |
| Kilogram per millilitre | 0,001738 | kg/mL |
| Gram per millilitre | 1,738 | g/mL |
| Milligram per millilitre | 1738 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 2930,268 | lb/yd³ |
| Pound per cubic foot | 108,50334 | lb/ft³ |
| Pound per cubic inch | 0,06279394 | lb/in³ |
| Pound per U.S. gallon | 14,50361 | lb/gal |
| Pound per British gallon | 17,41476 | |
| Pound per U.S. bushel | 135,02522 | |
| Ounce per cubic yard | 46873,86 | oz/yd³ |
| Ounce per cubic foot | 1735,9144 | oz/ft³ |
| Ounce per cubic inch | 1,004564 | oz/in³ |
| Ounce per U.S. gallon | 232,023 | oz/gal |
| Ounce per British gallon | 278,7752 | |
| Ounce per U.S. bushel | 2160,334 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 91,05382 | slug/yd³ |
| Slug per cubic foot | 3,37172 | slug/ft³ |
| Slug per cubic inch | 0,001951774 | slug/in³ |