Math & Numbers
Run one-sample Z tests for a mean with known population standard deviation or a single population proportion
z-test-calculatorMath & Numbers
Calculate exact and cumulative probabilities for sampling without replacement
hypergeometric-distribution-calculatorMath & Numbers
Calculate probabilities for the trial number of the first success in repeated Bernoulli trials
geometric-distribution-calculatorMath & Numbers
Calculate Pearson and Spearman correlation coefficients from paired numeric data
correlation-calculatorMath & 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-calculator