Probabilities
of 6-Sided Dice
It's sometimes handy to know the probabilities of an action succeeding in TFT. Since TFT uses 6-sided dice exclusively (as does GURPS), these tables do not include any other possibilities. The first table gives the probability of rolling a specific number; the second table gives the probability of rolling less than or equal to a specific number.
This table gives the probability of rolling a particular number on a set of so many 6-sided dice.
The next table gives the probability of rolling a particular number or less on a set of so many 6-sided dice. It can also be used to find the probability of rolling a particular number or more. Since the probability of rolling N or more is the same as the probability of not rolling N-1 or less, simply look up the N-1 value on this table, and subtract it from 1 or 100%. For example, to find the probability of rolling 8 or more on 3 dice, look up the probability of rolling 7 or less, which is 35/216 or 16.20%. Subtract that from 1, giving 181/216 (216 - 35 = 181) or 83.80%.