Sometime ago I found online a discussion about using D6 dice to simulate percentage dice. Unfortunately, I did not keep a link to the discussion. Anyway, I wanted to add my 2 cents and so here it is. You can use 2 D6 to compute a value over the 1 to 100 percentage range. The two dice, A and B, are treated as base 6 1st and 2nd place values. The range is 0 to 35, ie, ( A - 1 ) * 6 + ( B - 1 ), and so the percentage step is roughly 2.7%. This seems like enough granularity for most games using percentage dice. The lookup table is
Source code.
1 2 3 4 5 6 1 1 4 7 9 12 15 2 18 21 24 26 29 32 3 35 38 41 43 46 49 4 52 55 58 60 63 66 5 69 72 75 77 80 83 6 86 89 92 94 97 100