关于本计算器
Probability that XdY dice reach a target sum, exact or normal-approximated.
点数达标概率。
Probability that XdY dice reach a target sum, exact or normal-approximated.
Exact enumeration up to 2M outcomes, normal curve beyond.
10 of 36 outcomes — about 27.78%.
Count × (sides + 1) ÷ 2.