Statistics Calculator Library

Statistics Calculators

Browse our free statistics calculators by category. Calculate descriptive statistics, probabilities, confidence intervals, hypothesis tests, regression, and more with clear results and worked steps.

109 calculators available.

Browse Statistics Calculators by Category

Each category below contains the calculators available for that topic.

33 calculators

Basic Statistics

Explore our basic statistics calculators for finding averages, measures of spread, data positions, standard errors, covariance, and other foundational statistics. Choose the tool that matches your problem and...

View Category

5 Number Summary Calculator Arithmetic Mean Calculator Average Calculator Coefficient of Variation Calculator Covariance Calculator Descriptive Statistics Calculator Frequency Table Calculator Geometric Mean Calculator Grouped Data Mean Calculator Harmonic Mean Calculator Interquartile Range Calculator Kurtosis Calculator Lower and Upper Fence Calculator Mean Absolute Deviation Calculator Mean Calculator Mean, Median, Mode Calculator Median Absolute Deviation Calculator Median Calculator Midrange Calculator Mode Calculator Modulo Calculator Pooled Standard Deviation Calculator Pooled Variance Calculator Quartile Calculator Range Calculator Root Mean Square Calculator Skewness Calculator Standard Deviation Calculator Standard Error Calculator Standard Error of Proportion Calculator Sum of Squares Calculator Variance Calculator Weighted Mean Calculator

5 calculators

Charts

Browse calculators for charts with clear results and step-by-step solutions.

View Category

Bar Chart Maker Box Plot Calculator Histogram Maker Scatter Plot Maker Stem and Leaf Plot Calculator

6 calculators

Confidence Intervals

Browse calculators for confidence intervals with clear results and step-by-step solutions.

View Category

Confidence Interval Calculator Mean Confidence Interval Calculator Mean Difference Confidence Interval Calculator Paired T-Test Confidence Interval Calculator Proportion Confidence Interval Calculator Two Proportion Confidence Interval Calculator

9 calculators

Correlation & Regression

Browse calculators for correlation & regression with clear results and step-by-step solutions.

View Category

Coefficient of Determination Calculator Correlation Coefficient Calculator Exponential Regression Calculator Line of Best Fit Calculator Linear Regression Calculator Logistic Regression Calculator Multiple Linear Regression Calculator Quadratic Regression Calculator Spearman Correlation Coefficient Calculator

29 calculators

Hypothesis Test

Explore our hypothesis test calculators for testing population means, proportions, variances, correlations, and relationships between categorical variables. Choose from z tests, t tests, ANOVA, chi-square tests, Fisher’s exact...

View Category

ANOVA Calculator Chi Square Goodness of Fit Calculator Chi-square (χ²) Critical Value Calculator Chi-Square Test Calculator Correlation r Critical Value Calculator Degrees of Freedom Calculator F Test Calculator F-Critical Value Calculator Fisher’s Exact Test Calculator One Proportion Z Test Calculator One-Sample T-test Calculator One-Sample Z-Test Calculator One-Way ANOVA calculator P Value Calculator P-value from Chi-Square Calculator P-value from F Calculator P-Value from T Calculator P-value from Z Calculator Paired T Test Calculator Pearson r to P-value Calculator Pearson’s Correlation Test Calculator T Critical Value Calculator T-Test Calculator Two Proportion Z Test Calculator Two Sample T Test Calculator Two Sample Z Test Calculator Welch’s T Test Calculator Z Critical Value Calculator Z Test Calculator

8 calculators

Normal Distribution

Explore our normal distribution calculators to find probabilities, z scores, percentiles, and values associated with a normal distribution. You can also apply the empirical rule, work backward from...

View Category

Empirical Rule Calculator Inverse Normal Distribution Calculator Normal Distribution Calculator Percentile to Z Score Calculator Raw Score Calculator Z Score Calculator Z Score Probability Calculator Z Score to Percentile Calculator

6 calculators

Probability

Use our free probability calculators to solve common probability problems and see how each answer is calculated. You can calculate probabilities involving two events, conditional probability, Bayes’ theorem,...

View Category

Bayes Theorem Calculator Combination Calculator Conditional Probability Calculator Factorial Calculator Permutation Calculator Probability Calculator

9 calculators

Probability Distribution

Use our probability distribution calculators to calculate probabilities and summary measures for common discrete and continuous distributions. Choose the appropriate calculator based on your data, random variable, and...

View Category

Binomial Distribution Calculator Expected Value Calculator Exponential Distribution Calculator Geometric Distribution Calculator Hypergeometric Distribution Calculator Negative Binomial Distribution Calculator Normal Approximation to Binomial Calculator Poisson Distribution Calculator Uniform Distribution Calculator

4 calculators

Sample Size

Use our sample size calculators to estimate the number of participants or observations needed for your study. Choose Cochran’s formula, Slovin’s formula, or Yamane’s formula based on your...

View Category

Cochran’s formula Calculator Margin of Error Calculator Slovin’s Formula Calculator Yamane’s Sample Size Calculator