Free Statistics Calculators

11 tools

Mean, median, standard deviation, z-score, and probability tools. Browse our free statistics tools below — no sign-up required.

Calculate the geometric mean of positive numbers. Ideal for growth rates, returns, and ratios.

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Calculate the arithmetic mean (average) of a data set. Enter comma-separated numbers and get the mean.

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Find the median of any data set. Enter comma-separated numbers to get the middle value.

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Find the mode of a data set — the most frequently occurring value. Detects unimodal, bimodal, and multimodal data.

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Calculate percentiles and percentile ranks of a data set. Find the value at any percentile or the percentile of any value.

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Calculate basic probability for single and combined events. Compute AND, OR, NOT probabilities and conditional probability.

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Calculate the range of a data set — the difference between the maximum and minimum values.

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Calculate the standard deviation of a data set. Supports both population and sample standard deviation.

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Calculate the variance of a data set. Supports both population and sample variance and shows the spread around the mean.

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Calculate the weighted average of values with different weights or importance levels. GPA, portfolio returns, and more.

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Calculate the z-score (standard score) of a data point. Convert between raw scores, z-scores, and percentiles.

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More Productivity Calculators