Statistics Tools
87 free statistics tools calculators — including Mean, Median, Mode Calculator and Descriptive Statistics Calculator. Instant results in your browser, with the formula shown.
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Mean, Median, Mode Calculator
Calculate the mean, median and mode of any data set at once. For 4, 8, 6, 5, 3, 8: mean = 5.67, median = 5.5, mode = 8.
Standard Deviation Calculator
Calculate standard deviation and variance for any set of numbers, sample or population. For 2, 4, 4, 4, 5, 5, 7, 9 the mean is 5 and the population standard deviation is exactly 2.
Linear Regression Calculator
Calculate linear regression equation and R-squared.
Percentile Calculator
Calculate the percentile rank for any value in a dataset.
Permutation Combination Calculator
Calculate permutations and combinations.
Percentage Change Calculator
Calculate percentage increase or decrease between two values.
Descriptive Statistics Calculator
Calculate descriptive statistics for a dataset.
P-Value Calculator
Calculate p-value for statistical test.
Z-Score Calculator
Calculate a z-score with z = (x - mean) / standard deviation. Example: a score of 85 with mean 70 and standard deviation 10 gives z = 1.5, about the 93rd percentile.
Chi-Square Calculator (χ²)
Calculate chi-square value for statistical testing.
T-Test Calculator
Calculate t-value for testing difference between two means.
ANOVA Calculator - One Way
Calculate one-way ANOVA analysis of variance.
Quartile Calculator (Q1 Q2 Q3)
Calculate Q1, Q2 (median), and Q3 quartiles for a dataset.
Covariance Calculator
Calculate covariance between two variables.
Correlation Coefficient Calculator
Calculate Pearson correlation coefficient between two variables.
Confidence Interval Calculator
Calculate confidence interval for population mean.
Binomial Distribution Calculator
Calculate binomial distribution probabilities.
Sample Size Calculator
Calculate required sample size for research.
Weighted Average Calculator
Calculate weighted average of multiple values.
Normal Distribution Calculator
Calculate normal distribution probabilities from z-scores: P(Z <= 1.96) = 0.975, and an IQ of 130 with mean 100 and SD 15 gives z = 2, so only 2.28% score higher. Includes the 68-95-99.7 rule.
Median Calculator
Calculate median of a dataset.
Mode Calculator
Calculate mode of a dataset.
Probability Calculator
Calculate probability of an event.
Combination Calculator
Calculate number of combinations.
Margin of Error Calculator
Calculate margin of error for surveys.
ANOVA Calculator
Calculate one-way ANOVA.
Binomial Probability Calculator
Calculate binomial distribution probability.
Dice Probability Calculator
Calculate probability of dice outcomes.
Z-Score and Percentile Calculator
Calculate z-score and probability in normal distribution.
Probability Calculator – Combinations, Permutations & Factorials
Calculate combinations, permutations and factorials for probability problems: C(49, 6) = 13,983,816 lottery odds, P(10, 3) = 720 and 10! = 3,628,800, with formulas and worked examples.
Statistics Calculator - Statistical Analysis and Calculations
Perform statistical calculations and analysis online with our free statistics calculator. Calculate mean, median, standard deviation, variance, and more. Essential for students and data analysts.
Permutation Calculator (nPr)
Calculate the number of possible permutations.
Poisson Distribution Calculator
Calculate Poisson distribution probabilities for rare events.
Range Calculator
Calculate range of a dataset.
Permutation Calculator
Calculate number of permutations.
Chi-Square Test Calculator
Calculate chi-square statistic.
Coefficient of Variation Calculator
Calculate coefficient of variation.
Chi-Square Goodness of Fit Calculator
Calculate chi-square goodness of fit.
Skewness and Kurtosis Calculator
Calculate skewness and kurtosis coefficients.
Effect Size Calculator
Calculate effect size (Cohen's d).
Moving Average Calculator
Calculate moving average of data.
Quartile Calculator
Calculate quartiles Q1, Q2, Q3.
Outlier Detection Calculator
Calculate outliers in data using IQR method.
Poisson Probability Calculator
Calculate Poisson distribution probability.
Z-Score Table Calculator
Calculate probability from Z-Score.
T-Score Calculator
Calculate T-score and critical value.
Percentile Rank Calculator
Calculate percentile rank of a value.
Bayes Theorem Calculator
Calculate conditional probability using Bayes theorem.
About Statistics Tools
This section gathers 87 free calculators for Statistics Tools on one page. The most popular are Mean, Median, Mode Calculator, Descriptive Statistics Calculator and P-Value Calculator, each running instantly in your browser with the formula and steps shown. The grid also covers Percentage Change Calculator, so most common Statistics Tools questions have a matching tool. Every tool is free with no sign-up, so any number you copy can be verified yourself.
What you can calculate
Mean, Median, Mode Calculator, Descriptive Statistics Calculator, P-Value Calculator, Percentage Change Calculator
Top Statistics Tools Calculators
Mean, Median, Mode Calculator
Calculate the mean, median and mode of any data set at once. For 4, 8, 6, 5, 3, 8: mean = 5.67, median = 5.5, mode = 8.
Standard Deviation Calculator
Calculate standard deviation and variance for any set of numbers, sample or population. For 2, 4, 4, 4, 5, 5, 7, 9 the mean is 5 and the population standard deviation is exactly 2.
Linear Regression Calculator
Calculate linear regression equation and R-squared.
Percentile Calculator
Calculate the percentile rank for any value in a dataset.
Permutation Combination Calculator
Calculate permutations and combinations.
FAQs about Statistics Tools
What is the best calculator in the Statistics Tools category?
The most popular Statistics Tools tools on this site are Mean, Median, Mode Calculator, Descriptive Statistics Calculator and P-Value Calculator, in that order. All are free, run instantly in your browser, and show their calculation steps — pick the closest to your case or try more than one.
Are the Statistics Tools calculators free to use?
Yes — all 87 tools in the Statistics Tools category are completely free: they run in your browser with no sign-up and never send your inputs anywhere. Enter your values and the result appears instantly, with the formula used shown.
How many calculators are in the Statistics Tools category?
The Statistics Tools category currently lists 87 free tools. The most used are Mean, Median, Mode Calculator, Descriptive Statistics Calculator and P-Value Calculator, and all of them are reachable directly from the grid on this page, with no registration required.