The density, or more precisely, the volumetric mass density of plutonium is 19816 kg/m³. This means that the mass of 1 m³ plutonium is 19816 kg.
The weight (on earth) of 1 m³ plutonium is 194394,96 N or 194,39496 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 19816 | kg/m³ |
| Tonne per cubic meter | 19,816 | t/m³ |
| Gram per cubic meter | 19816000 | g/m³ |
| Milligram per cubic meter | 19816000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,019816 | kg/cm³ |
| Gram per cubic centimeter | 19,816 | g/cm³ |
| Milligram per cubic centimeter | 19816 | mg/cm³ |
| Kilogram per litre | 19,816 | kg/L |
| Gram per litre | 19816 | g/L |
| Milligram per litre | 19816000 | mg/L |
| Kilogram per millilitre | 0,019816 | kg/mL |
| Gram per millilitre | 19,816 | g/mL |
| Milligram per millilitre | 19816 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 33409,776 | lb/yd³ |
| Pound per cubic foot | 1237,11288 | lb/ft³ |
| Pound per cubic inch | 0,71595208 | lb/in³ |
| Pound per U.S. gallon | 165,36452 | lb/gal |
| Pound per British gallon | 198,55632 | |
| Pound per U.S. bushel | 1539,50504 | |
| Ounce per cubic yard | 534437,52 | oz/yd³ |
| Ounce per cubic foot | 19792,2208 | oz/ft³ |
| Ounce per cubic inch | 11,453648 | oz/in³ |
| Ounce per U.S. gallon | 2645,436 | oz/gal |
| Ounce per British gallon | 3178,4864 | |
| Ounce per U.S. bushel | 24631,288 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 1038,16024 | slug/yd³ |
| Slug per cubic foot | 38,44304 | slug/ft³ |
| Slug per cubic inch | 0,022253368 | slug/in³ |