SRD:Increased Damage by Size

Table: Increased Damage by Size

Old Damage1	New Damage
1d2	1d3
1d3	1d4
1d4	1d6
1d6	1d8
1d8	2d6
1d10	2d8
2d6	3d6
2d8	3d8
Repeat the adjustment if the creature or object moves up more than one size category.