The density, or more precisely, the volumetric mass density of rhodium is 12450 kg/m³. This means that the mass of 1 m³ rhodium is 12450 kg.
The weight (on earth) of 1 m³ rhodium is 122134,5 N or 122,1345 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 12450 | kg/m³ |
| Tonne per cubic meter | 12,45 | t/m³ |
| Gram per cubic meter | 12450000 | g/m³ |
| Milligram per cubic meter | 12450000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,01245 | kg/cm³ |
| Gram per cubic centimeter | 12,45 | g/cm³ |
| Milligram per cubic centimeter | 12450 | mg/cm³ |
| Kilogram per litre | 12,45 | kg/L |
| Gram per litre | 12450 | g/L |
| Milligram per litre | 12450000 | mg/L |
| Kilogram per millilitre | 0,01245 | kg/mL |
| Gram per millilitre | 12,45 | g/mL |
| Milligram per millilitre | 12450 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 20990,7 | lb/yd³ |
| Pound per cubic foot | 777,2535 | lb/ft³ |
| Pound per cubic inch | 0,4498185 | lb/in³ |
| Pound per U.S. gallon | 103,89525 | lb/gal |
| Pound per British gallon | 124,749 | |
| Pound per U.S. bushel | 967,2405 | |
| Ounce per cubic yard | 335776,5 | oz/yd³ |
| Ounce per cubic foot | 12435,06 | oz/ft³ |
| Ounce per cubic inch | 7,1961 | oz/in³ |
| Ounce per U.S. gallon | 1662,075 | oz/gal |
| Ounce per British gallon | 1996,98 | |
| Ounce per U.S. bushel | 15475,35 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 652,2555 | slug/yd³ |
| Slug per cubic foot | 24,153 | slug/ft³ |
| Slug per cubic inch | 0,01398135 | slug/in³ |