Math & Numbers
Fit a polynomial least-squares curve to paired numeric data and inspect coefficients, R squared, and predictions
polynomial-regression-calculatorMath & Numbers
Calculate exact, cumulative, and upper-tail Poisson probabilities from an expected event rate
poisson-distribution-calculatorMath & Numbers
Calculate union, independent intersection, complement, and at-least-one probabilities
probability-calculatorMath & Numbers
Calculate population standard deviation from population variance using the n denominator
population-standard-deviation-calculatorMath & Numbers
Calculate Q1, median, Q3, interquartile range, and optional outlier fences for a numeric dataset
quartile-calculatorMath & Numbers
Calculate population variance with the n denominator for a complete numeric dataset
population-variance-calculatorMath & Numbers
Calculate the statistical range of a numeric dataset from its minimum and maximum values
range-calculatorMath & Numbers
Find all real and complex roots of a polynomial from a coefficient list using a numerical root finder
polynomial-roots-calculatorMath & Numbers
Solve quadratic equations, classify the roots, and return discriminant, vertex, and factor information
quadratic-equation-calculatorMath & Numbers
Calculate permutations with or without repetition, plus circular arrangements, with formulas and optional steps
permutation-calculatorMath & Numbers
Break an integer into prime factors, show the factorization string, and optionally include divisor properties and factorization steps
prime-factorization-calculatorMath & Numbers
Raise a base to any real exponent, with optional scientific notation and verification details
power-calculator