Statistics Calculators

Understand your data: mean, median, standard deviation, z-scores, confidence intervals, probability and regression tools.

11 tools

Mean, median, mode and range of any list of numbers — just paste them separated by commas.

Compute the confidence interval and margin of error for a sample mean at 90/95/99%.

Instantly get mean, median, mode and range of a list of numbers with full steps.

Convert a z-score into one- and two-tailed p-values for hypothesis testing.

Measure accuracy: percent error between an experimental value and the true value.

Compute nPr permutations and nCr combinations with factorial working shown.

Coin flips (binomial), dice rolls or a custom favorable/total ratio, with likelihood band.

How many people to survey? Minimum sample size for a margin of error and confidence.

Population or sample standard deviation, variance and margin of error from raw data.

Mean, median, mode, variance, σ, s and more for any comma-separated data set.

Standardize a raw score: z-score, percentile and normal probabilities.

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