Statistics online

Statistical tests, charts, probabilities and clear results. Automatically checks assumptions, interprets results and outputs graphs, histograms and other charts.
The statistics online calculators support not only the test statistic and the p-value but more results like effect size, test power, and the normality level.
If one of the validations fails the tool recommends a solution.
What statistical test should you use? the following link will help you choose: choose a statistical test (decision questionnaire).

Test statistic calculators

Find the test statistic calculator

TestAssumptionsRequired sample data
#Test nameCheckStatisticNormal DistributionIndσσ12dμ/px̄/p̂;nSdata
1One Sample Z-TestMeanZ statistic
2One Sample T-TestMeanT statistic
3Two Sample Z-TestMeanZ statistic
4Two Sample T-Test (Pooled variance)MeanT statistic
5Two Sample T-Test (Welch's)MeanT statistic
6Two Sample Mann-Whitney U TestRankU statistic
7Paired T-TestMeanT statisticPaired
8Paired Wilcoxon Sign Rank TestRankT statisticPaired
9One Way ANOVA TestMeanF statistic
10Kruskal-Wallis TestMeanF statistic
11Two Way ANOVA Test
Fixed model, Mixed model, Random mode, Mixed model with repeats
MeanF statistic
12One Sample Proportion TestProportionZ statisticBinomial
13Two Sample Proportion TestProportionZ statisticBinomial
14Chi-Squared Test For Varianceσchi-squared statistic
15F Test For VariancesσF statistic
16Levene's Test For VariancesσF statistic
17Chi-Squared Test For Goodness Of Fit
(McNemar test, Chi-squared test for association, Fisher test, Binomial test)
Fitchi squared statistic
18Shapiro-Wilk TestFitw statistic
19Kolmogorov Smirnov TestFitD = Max1≤i≤n(Di+,Di-)
20Kaplan Meier Survival AnalysisSurvivalw statistic
** - yes, - no, empty - irrelevant

Regression calculator

1Simple Linear RegressionRegression F statistic
2Multiple Linear RegressionRegression F statistic
3*Bulk Linear RegressionRegression F statistic
4Binary Logistic Regressionχ2 = 2(LL1-LL0)
5Multinomial Logistic Regressionχ2 = 2(LL1-LL0)
*Bulk linear regression calculator for several dependent variables with the same predictors.

Sample size calculators

Distribution calculators

Statistical tables

Statistics calculators

Each statistics calculator contains step by step calculation.

#Statistic calculatorImage
1Mean Median Mode (Q1, Q3, IRQ, Range)mean
2Standard Deviation (Variance, Mean, SEM, MAD)Standard deviation
3Average (Sum, Count)
4Geometric Mean (Product, n-th root)GM
5Harmonic MeanH
6Probability (Probability formula, Dependent events, Bayes' Theorem, Independent events)P
7Combinations calculator (Combinations calculator, Permutation calculator, Repetitions)
8Correlation calculator (Pearson correlation, Spearman's rank correlation)
9Outliers (Tukey's Fences (Boxplot), Z-Score)

Chart makers


The goal of this website is to make statistics accessible to anyone, converting complex statistical jargon into common everyday language.
We help everybody to calculate statistics.
The calculators also provide R codes for your convenience.
We started adding a step-by-step work-through for education purposes, an easy guide on how to calculate test statistics.


We put in a lot of effort to provide accurate results and we automatically test every new page, The older pages were tested manually, but we slowly also automate the old pages.
We usually compare the results to the R results.
The information and tools on this website are given AS IS WITHOUT ANY WARRANTY OF ANY KIND.

Calculate statistics

The best online calculator to calculate statistics.