The density, or more precisely, the volumetric mass density of barium is 3510 kg/m³. This means that the mass of 1 m³ barium is 3510 kg.
The weight (on earth) of 1 m³ barium is 34433,1 N or 34,4331 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 3510 | kg/m³ |
| Tonne per cubic meter | 3,51 | t/m³ |
| Gram per cubic meter | 3510000 | g/m³ |
| Milligram per cubic meter | 3510000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,00351 | kg/cm³ |
| Gram per cubic centimeter | 3,51 | g/cm³ |
| Milligram per cubic centimeter | 3510 | mg/cm³ |
| Kilogram per litre | 3,51 | kg/L |
| Gram per litre | 3510 | g/L |
| Milligram per litre | 3510000 | mg/L |
| Kilogram per millilitre | 0,00351 | kg/mL |
| Gram per millilitre | 3,51 | g/mL |
| Milligram per millilitre | 3510 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 5917,86 | lb/yd³ |
| Pound per cubic foot | 219,1293 | lb/ft³ |
| Pound per cubic inch | 0,1268163 | lb/in³ |
| Pound per U.S. gallon | 29,29095 | lb/gal |
| Pound per British gallon | 35,1702 | |
| Pound per U.S. bushel | 272,6919 | |
| Ounce per cubic yard | 94664,7 | oz/yd³ |
| Ounce per cubic foot | 3505,788 | oz/ft³ |
| Ounce per cubic inch | 2,02878 | oz/in³ |
| Ounce per U.S. gallon | 468,585 | oz/gal |
| Ounce per British gallon | 563,004 | |
| Ounce per U.S. bushel | 4362,93 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 183,8889 | slug/yd³ |
| Slug per cubic foot | 6,8094 | slug/ft³ |
| Slug per cubic inch | 0,00394173 | slug/in³ |