The density, or more precisely, the volumetric mass density of hafnium is 13310 kg/m³. This means that the mass of 1 m³ hafnium is 13310 kg.
The weight (on earth) of 1 m³ hafnium is 130571,1 N or 130,5711 kN.
Conversion Chart Metric System:
| Kilogram per cubic meter | 13310 | kg/m³ |
| Tonne per cubic meter | 13,31 | t/m³ |
| Gram per cubic meter | 13310000 | g/m³ |
| Milligram per cubic meter | 13310000000 | mg/m³ |
| Kilogram per cubic centimeter | 0,01331 | kg/cm³ |
| Gram per cubic centimeter | 13,31 | g/cm³ |
| Milligram per cubic centimeter | 13310 | mg/cm³ |
| Kilogram per litre | 13,31 | kg/L |
| Gram per litre | 13310 | g/L |
| Milligram per litre | 13310000 | mg/L |
| Kilogram per millilitre | 0,01331 | kg/mL |
| Gram per millilitre | 13,31 | g/mL |
| Milligram per millilitre | 13310 | mg/mL |
Conversion Chart British and U.S.:
| Pound per cubic yard | 22440,66 | lb/yd³ |
| Pound per cubic foot | 830,9433 | lb/ft³ |
| Pound per cubic inch | 0,4808903 | lb/in³ |
| Pound per U.S. gallon | 111,07195 | lb/gal |
| Pound per British gallon | 133,3662 | |
| Pound per U.S. bushel | 1034,0539 | |
| Ounce per cubic yard | 358970,7 | oz/yd³ |
| Ounce per cubic foot | 13294,028 | oz/ft³ |
| Ounce per cubic inch | 7,69318 | oz/in³ |
| Ounce per U.S. gallon | 1776,885 | oz/gal |
| Ounce per British gallon | 2134,924 | |
| Ounce per U.S. bushel | 16544,33 |
British Gravitational and English Engineering Units:
| Slug per cubic yard | 697,3109 | slug/yd³ |
| Slug per cubic foot | 25,8214 | slug/ft³ |
| Slug per cubic inch | 0,01494713 | slug/in³ |