User talk:LRichardson/Essays/2d6 to 1d20 Conversion

I'm going to be reworking this to include equivalences for 1d20, 1d24, 1d30 and 1d100.

In the meantime I am going to be holding the formatted tables here.

Table Holding Area

2d6

Decimal Values
Roll	P equal to or	P less	P equal to or	P greater
( R )	less than R	than R	greater than R	than R
2	0.0278	0.0000	1.0000	0.9722
3	0.0833	0.0278	0.9722	0.9167
4	0.1667	0.0833	0.9167	0.8333
5	0.2778	0.1667	0.8333	0.7222
6	0.4167	0.2778	0.7222	0.5833
7	0.5833	0.4167	0.5833	0.4167
8	0.7222	0.5833	0.4167	0.2778
9	0.8333	0.7222	0.2778	0.1667
10	0.9167	0.8333	0.1667	0.0833
11	0.9722	0.9167	0.0833	0.0278
12	1.0000	0.9722	0.0278	0.0000

Reduced Table
Roll	Number of	C equal to or	C less	C equal to or	C greater
( R )	Combinations	less than R	than R	greater than R	than R
2	1	1	0	36	35
3	2	3	1	35	33
4	3	6	3	33	30
5	4	10	6	30	26
6	5	15	10	26	21
7	6	21	15	21	15
8	5	26	21	15	10
9	4	30	26	10	6
10	3	33	30	6	3
11	2	35	33	3	1
12	1	36	35	1	0

1d20

1d20
Roll	P equal to or	P less	P equal to or	P greater
( R )	less than R	than R	greater than R	than R
1	0.05	0.00	1.00	0.95
2	0.10	0.05	0.95	0.90
3	0.15	0.10	0.90	0.85
4	0.20	0.15	0.85	0.80
5	0.25	0.20	0.80	0.75
6	0.30	0.25	0.75	0.70
7	0.35	0.30	0.70	0.65
8	0.40	0.35	0.65	0.60
9	0.45	0.40	0.60	0.55
10	0.50	0.45	0.55	0.50
11	0.55	0.50	0.50	0.45
12	0.60	0.55	0.45	0.40
13	0.65	0.60	0.40	0.35
14	0.70	0.65	0.35	0.30
15	0.75	0.70	0.30	0.25
16	0.80	0.75	0.25	0.20
17	0.85	0.80	0.20	0.15
18	0.90	0.85	0.15	0.10
19	0.95	0.90	0.10	0.05
20	1.00	0.95	0.05	0.00

1d20
Roll	Raw 2d6	Adjusted	Wildcard	Alt. Wildcard
( R )	Equivalent	2d6 Eq.	2d6 Eq.	2d6 Eq.
1	2	2	3	3
2	3	3	4	4
3	4	4	4	4
4	5	5	5	5
5	5	5	5	5
6	5	6	6	6
7	6	6	6	6
8	6	6	6	7
9	7	7	7	7
10	7	7	7	7
11	7	7	7	7
12	7	7	8	7
13	8	8	8	8
14	8	8	8	8
15	9	8	9	9
16	9	9	9	9
17	9	9	10	10
18	10	10	10	10
19	11	11	11	11
20	12	12	2 or 12	2 or 12

1d24

1d24
Roll	P equal to or	P less	P equal to or	P greater
( R )	less than R	than R	greater than R	than R
1	0.0417	0.0000	1.0000	0.9583
2	0.0833	0.0417	0.9583	0.9167
3	0.1250	0.0833	0.9167	0.8750
4	0.1667	0.1250	0.8750	0.8333
5	0.2083	0.1667	0.8333	0.7917
6	0.2500	0.2083	0.7917	0.7500
7	0.2917	0.2500	0.7500	0.7083
8	0.3333	0.2917	0.7083	0.6667
9	0.3750	0.3333	0.6667	0.6250
10	0.4167	0.3750	0.6250	0.5833
11	0.4583	0.4167	0.5833	0.5417
12	0.5000	0.4583	0.5417	0.5000
13	0.5417	0.5000	0.5000	0.4583
14	0.5833	0.5417	0.4583	0.4167
15	0.6250	0.5833	0.4167	0.3750
16	0.6667	0.6250	0.3750	0.3333
17	0.7083	0.6667	0.3333	0.2917
18	0.7500	0.7083	0.2917	0.2500
19	0.7917	0.7500	0.2500	0.2083
20	0.8333	0.7917	0.2083	0.1667
21	0.8750	0.8333	0.1667	0.1250
22	0.9167	0.8750	0.1250	0.0833
23	0.9583	0.9167	0.0833	0.0417
24	1.0000	0.9583	0.0417	0.0000

1d24
Roll	Raw 2d6	Adjusted	Wildcard	Alt. Wildcard
( R )	Equivalent	2d6 Eq.	2d6 Eq.	2d6 Eq.
1	2	2	3	3
2	3	3	4	4
3	4	4	4	4
4	4	4	5	5
5	5	5	5	5
6	5	5	5	6
7	5	5	6	6
8	6	6	6	6
9	6	6	6	6
10	6	6	7	7
11	7	7	7	7
12	7	7	7	7
13	7	7	7	7
14	7	7	7	7
15	8	8	8	8
16	8	8	8	8
17	8	8	8	8
18	9	9	9	8
19	9	9	9	9
20	9	9	9	9
21	10	10	10	10
22	10	10	10	10
23	11	11	11	11
24	12	12	2 or 12	2 or 12

1d30

1d30
Roll	P equal to or	P less	P equal to or	P greater
( R )	less than R	than R	greater than R	than R
1	0.0333	0.0000	1.0000	0.9667
2	0.0667	0.0333	0.9667	0.9333
3	0.1000	0.0667	0.9333	0.9000
4	0.1333	0.1000	0.9000	0.8667
5	0.1667	0.1333	0.8667	0.8333
6	0.2000	0.1667	0.8333	0.8000
7	0.2333	0.2000	0.8000	0.7667
8	0.2667	0.2333	0.7667	0.7333
9	0.3000	0.2667	0.7333	0.7000
10	0.3333	0.3000	0.7000	0.6667
11	0.3667	0.3333	0.6667	0.6333
12	0.4000	0.3667	0.6333	0.6000
13	0.4333	0.4000	0.6000	0.5667
14	0.4667	0.4333	0.5667	0.5333
15	0.5000	0.4667	0.5333	0.5000
16	0.5333	0.5000	0.5000	0.4667
17	0.5667	0.5333	0.4667	0.4333
18	0.6000	0.5667	0.4333	0.4000
19	0.6333	0.6000	0.4000	0.3667
20	0.6667	0.6333	0.3667	0.3333
21	0.7000	0.6667	0.3333	0.3000
22	0.7333	0.7000	0.3000	0.2667
23	0.7667	0.7333	0.2667	0.2333
24	0.8000	0.7667	0.2333	0.2000
25	0.8333	0.8000	0.2000	0.1667
26	0.8667	0.8333	0.1667	0.1333
27	0.9000	0.8667	0.1333	0.1000
28	0.9333	0.9000	0.1000	0.0667
29	0.9667	0.9333	0.0667	0.0333
30	1.0000	0.9667	0.0333	0.0000

1d30
Roll	Raw 2d6	Adjusted	Wildcard
( R )	Equivalent	2d6 Eq.	2d6 Eq.
1	2	2	3
2	3	3	3
3	3	3	4
4	4	4	4
5	4	4	4
6	5	5	5
7	5	5	5
8	5	5	5
9	6	6	6
10	6	6	6
11	6	6	6
12	6	6	6
13	6	7	7
14	7	7	7
15	7	7	7
16	7	7	7
17	7	7	7
18	8	7	8
19	8	8	8
20	8	8	8
21	8	8	8
22	8	8	9
23	9	9	9
24	9	9	9
25	9	9	10
26	10	10	10
27	10	10	10
28	11	11	11
29	11	11	11
30	12	12	2 or 12

1d100

1d100	Raw 2d6
Equivalent
2	1 - 3
3	4 - 8
4	9 - 17
5	18 - 28
6	29 - 42
7	43 - 58
8	59 - 72
9	73 - 83
10	84 - 92
11	93 - 97
12	98 - 100