Math & Numbers
Calculate sample and population covariance from paired numeric data
covariance-calculatorMath & Numbers
Calculate a z-score from a raw value using a dataset or manually entered mean and standard deviation
z-score-calculatorMath & Numbers
Convert a z-score into normal-distribution percentile, tail probability, or central area
z-score-to-percentile-calculatorMath & Numbers
Calculate the harmonic mean of positive values, with optional arithmetic and geometric mean comparison
harmonic-mean-calculatorMath & Numbers
Calculate the geometric mean of positive numeric values for growth rates, ratios, and multiplicative datasets
geometric-mean-calculatorMath & Numbers
Compute the 2D signed area or 3D cross product between two vectors
cross-product-calculatorMath & Numbers
Calculate the nth term, first terms, and finite sum of an arithmetic sequence
arithmetic-sequence-calculatorMath & Numbers
Calculate the nth term, first terms, and finite sum of a geometric sequence
geometric-sequence-calculatorMath & Numbers
Calculate antilogarithms for any valid base and optionally verify the result by applying the logarithm again
antilog-calculatorDate & Time
Expand RRULE-based VEVENT recurrence into concrete occurrences and export them as JSON or a flattened ICS calendar
ics-calendar-recurrence-rule-expanderMath & Numbers
Convert bytes to megabytes using the decimal MB standard with configurable precision
byte-to-mbMath & Numbers
Run one-way ANOVA across multiple groups and inspect sums of squares, F statistic, and p-value
anova-calculator