d20 twenty-sided die d4 four-sided die d6 six-sided die 2d6 two six-sided dice d8 eight-sided die d10\ ten-sided die d12 twelve-sided die d100 percentile dice
12 4 2 9 4 3 9 56



Multiple results for 1d20 + modifier ability checks, attack rolls, saving throws...
Normal Rolls #1 #2 #3 #4 #5 #6 #7 #8
Adv./Disadv. #1 #2 #3 #4
d20 ROLL 12 3 13 17 8 4 17 5
1d20-1 11 2 12 16 7 3 16 4
1d20+0 12 3 13 17 8 4 17 5
1d20+1 13 4 14 18 9 5 18 6
1d20+2 14 5 15 19 10 6 19 7
1d20+3 15 6 16 20 11 7 20 8
1d20+4 16 7 17 21 12 8 21 9
1d20+5 17 8 18 22 13 9 22 10
1d20+6 18 9 19 23 14 10 23 11
1d20+7 19 10 20 24 15 11 24 12
1d20+8 20 11 21 25 16 12 25 13
1d20+9 21 12 22 26 17 13 26 14
1d20+10 22 13 23 27 18 14 27 15
1d20+11 23 14 24 28 19 15 28 16
1d20+12 24 15 25 29 20 16 29 17
1d20+13 25 16 26 30 21 17 30 18
1d20+14 26 17 27 31 22 18 31 19
1d20+15 27 18 28 32 23 19 32 20
1d20+16 28 19 29 33 24 20 33 21
1d20+17 29 20 30 34 25 21 34 22
1d20+18 30 21 31 35 26 22 35 23
1d20+19 31 22 32 36 27 23 36 24
1d20+20 32 23 33 37 28 24 37 25

Damage or other effects...
  d4 d6 d8 d10 d12
1d# 4 2 7 4 1
2d# 5 3 10 12 2
3d# 7 4 18 18 13
4d# 11 8 22 23 19
5d# 14 9 24 29 28
6d# 16 11 29 37 38
7d# 20 15 34 41 46
8d# 22 20 40 47 55
9d# 23 25 43 56 66
10d# 24 31 50 59 67
11d# 25 32 52 66 73
12d# 27 33 59 72 75
13d# 30 34 64 76 85
14d# 31 37 72 80 97
15d# 33 43 78 82 102
16d# 37 47 81 89 103
17d# 41 49 84 93 109
18d# 42 52 86 96 116
19d# 45 56 92 105 117
20d# 49 62 99 115 127
21d# 53 68 100 118 138
22d# 54 72 107 127 140
23d# 55 74 114 135 144
24d# 58 78 116 144 150
26d# 62 85 126 163 162
27d# 65 86 128 165 172
28d# 68 92 132 169 176
29d# 72 93 133 176 187
30d# 76 98 135 186 195