| Form of the feedstock | Density (kg/m3) | Remarks |
| Loose rice straw in the field | 13 - 18 | Light material |
| Chopped 2 - 10 mm | 50 - 120 | 4 - 5 times in bulk density due to smaller size |
| Bale Round | 60 - 90 | Baling packages the biomass |
| Briquettes 90 mm diameter | 350 - 450 | 3 - 4 times in increase in bulk density of bales |
| Pellets 8 mm | 600 - 700 | Flowable easily handled like grain |
| Rice husks | 86 - 110 | May be pelletized |