D&D Attribute D6 Attribute
20 (5e) 18/00 (1e-2e) 5D
- (5e) 18/76-99 (1e-2e) 4D+2
19 (5e) 18/51-75 (1e-2e) 4D+1
18 and 18/01-50 4D
17 3D+2
16 3D+1
14-15 3D
13 2D+2
11-12 2D+1
8-10 2D
7 1D+2
6 1D+1
3-5 1D
AD&D Hit Dice D6 Combat Attribute D6 Combat Skill (Typical)
0.5/level 0 2D 3D
1-1 2D+2 3D+2
1 3D 4D
1+1 3D+1 4D+1
2 4D 5D
3 5D 6D
4 6D 7D
5 7D 8D
+1 +1 pip +1 pip
Above 5 HD each +1 HD or Level = +1 pip. So a 15 HD monster would be 10D+1 in D6. Emperor Palpatine with his highest skill at 15D could be Level 26 in AD&D.