The density, or more precisely, the volumetric mass density of cerium is 6689 kg/m³. This means that the mass of 1 m³ cerium is 6689 kg.
The weight (on earth) of 1 m³ cerium is 65619,09 N or 65,61909 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 6689 | kg/m³ |
| Tonne per cubic meter | 6,689 | t/m³ |
| Gram per cubic meter | 6689000 | g/m³ |
| Milligram per cubic meter | 6689000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,006689 | kg/cm³ |
| Gram per cubic centimeter | 6,689 | g/cm³ |
| Milligram per cubic centimeter | 6689 | mg/cm³ |
| Kilogram per litre | 6,689 | kg/L |
| Gram per litre | 6689 | g/L |
| Milligram per litre | 6689000 | mg/L |
| Kilogram per millilitre | 0,006689 | kg/mL |
| Gram per millilitre | 6,689 | g/mL |
| Milligram per millilitre | 6689 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 11277,654 | lb/yd³ |
| Pound per cubic foot | 417,59427 | lb/ft³ |
| Pound per cubic inch | 0,24167357 | lb/in³ |
| Pound per U.S. gallon | 55,819705 | lb/gal |
| Pound per British gallon | 67,02378 | |
| Pound per U.S. bushel | 519,66841 | |
| Ounce per cubic yard | 180402,33 | oz/yd³ |
| Ounce per cubic foot | 6680,9732 | oz/ft³ |
| Ounce per cubic inch | 3,866242 | oz/in³ |
| Ounce per U.S. gallon | 892,9815 | oz/gal |
| Ounce per British gallon | 1072,9156 | |
| Ounce per U.S. bushel | 8314,427 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 350,43671 | slug/yd³ |
| Slug per cubic foot | 12,97666 | slug/ft³ |
| Slug per cubic inch | 0,007511747 | slug/in³ |