The power set of a set is the set of all subsets of a set, including empty set and itself. It is commonly denoted as P(S). A simple online algebra calculator to calculate the number of subsets (powersets) in a set with ease.

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The power set is the set of all subsets of a given set. A set with n elements will have 2^{n} subsets. The subset (or powerset) of any set S is written as P(S) or 2S. The power set must be larger than the original set and is closely related to the binomial theorem. The number of subsets with k elements in the power set of a set with n elements is given by the number of combinations, C(n, k), also called binomial coefficients. Enter the values for a set separated by a comma in this algebra calculator and you could calculate the number of subsets (powersets) in a set.