GCF and LCM Calculator: Greatest Common Factor and Prime Factors
Calculate the GCF/GCD, LCM and prime factorization of one or more integers with exact arithmetic and checked examples.
Permutation and Combination Calculator: nPr, nCr and Repetition
Calculate exact permutations, combinations, nPr, nCr, selections with repetition and distinct arrangements of repeated objects.
Probability Calculator: Events, Union and Binomial Probability
Calculate single-event, independent-event, union and binomial probabilities with complements, cumulative results and checked formulas.
Random Number Generator: Integers, Decimals and Unique Numbers
Generate random integers or fixed-decimal numbers in an inclusive range, with multiple results, sorting and no-repeat sampling.
Average Calculator: Mean, Median, Mode, Range and Sum
Calculate arithmetic mean, median, mode, sum, count, range, midrange, geometric mean and harmonic mean from one dataset.