Permutation Calculator P(n,r)

Find the number of ways to arrange r items from a set of n items where order matters.

Examples

When order matters?

Use permutations when sequence/position matters (e.g. arranging people in a line).

Calculate combinations C(n,r) — selections where order does not matter.

Compute mean, median, mode, standard deviation, variance, min, max and more.

Convert a value to a standard score (z) and approximate percentile.

Calculate probability percentage and odds from favorable and total outcomes.

Compute a confidence interval for a mean from sample statistics.