Math & Numbers
Calculate one or more percentiles for a numeric dataset with linear, nearest-rank, or exclusive methods
percentile-calculatorMath & Numbers
Convert a normal percentile, tail area, or central area into a standard normal z-score
percentile-to-z-score-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
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-calculatorMath & Numbers
Solve proportion equations of the form a/b = c/d and calculate the missing term
proportion-calculatorMath & Numbers
Calculate percent error between an experimental value and a reference value
percent-error-calculator