Success Calculator
Compute the odds a d20 roll succeeds — an attack against a target's AC, or a saving throw against a DC — including advantage/disadvantage from either side, and the full distribution of successes across several tries.
Character
Target
A condition on the target (prone, restrained…) that gives the character advantage or disadvantage on this roll.
— Single Attempt
— At Least One (of N)
— Expected Successes