The density, or more precisely, the volumetric mass density of neodymium is 7010 kg/m³. This means that the mass of 1 m³ neodymium is 7010 kg.
The weight (on earth) of 1 m³ neodymium is 68768,1 N or 68,7681 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 7010 | kg/m³ |
| Tonne per cubic meter | 7,01 | t/m³ |
| Gram per cubic meter | 7010000 | g/m³ |
| Milligram per cubic meter | 7010000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,00701 | kg/cm³ |
| Gram per cubic centimeter | 7,01 | g/cm³ |
| Milligram per cubic centimeter | 7010 | mg/cm³ |
| Kilogram per litre | 7,01 | kg/L |
| Gram per litre | 7010 | g/L |
| Milligram per litre | 7010000 | mg/L |
| Kilogram per millilitre | 0,00701 | kg/mL |
| Gram per millilitre | 7,01 | g/mL |
| Milligram per millilitre | 7010 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 11818,86 | lb/yd³ |
| Pound per cubic foot | 437,6343 | lb/ft³ |
| Pound per cubic inch | 0,2532713 | lb/in³ |
| Pound per U.S. gallon | 58,49845 | lb/gal |
| Pound per British gallon | 70,2402 | |
| Pound per U.S. bushel | 544,6069 | |
| Ounce per cubic yard | 189059,7 | oz/yd³ |
| Ounce per cubic foot | 7001,588 | oz/ft³ |
| Ounce per cubic inch | 4,05178 | oz/in³ |
| Ounce per U.S. gallon | 935,835 | oz/gal |
| Ounce per British gallon | 1124,404 | |
| Ounce per U.S. bushel | 8713,43 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 367,2539 | slug/yd³ |
| Slug per cubic foot | 13,5994 | slug/ft³ |
| Slug per cubic inch | 0,00787223 | slug/in³ |