Free Statistics Calculator – t-test, ANOVA, Chi-Square & p-value

Run t-tests, ANOVA, correlation, chi-square, Cronbach's alpha and p-values on data from any page. APA results in one click.

Free statistics calculator for students, researchers and analysts. Paste your data, choose a test and get the result with effect sizes and a ready-to-paste APA 7 sentence. No account, no limits, and your data never leaves your computer. WHAT YOU CAN RUN • Descriptive statistics: n, mean, SD, 95% CI, median, quartiles, skewness, kurtosis • Independent t-test (Welch or Student), paired t-test, one-sample t-test • One-way ANOVA with η² and ω² • Mann-Whitney U, Wilcoxon signed-rank and Kruskal-Wallis tests • Pearson and Spearman correlation with 95% CI • Simple linear regression • Chi-square test of independence (with Cramér's V) and goodness of fit • Cronbach's alpha with item-rest correlations and alpha-if-item-deleted • p-value calculator for t, z, F and chi-square BUILT FOR THESES AND PAPERS • Every result comes with an APA 7 sentence: copy it straight into your results chapter • Copy the results table as tab-separated text for Word, Excel or Google Sheets • Effect sizes included: Cohen's d, Hedges' g, dz, η², ω², r, ε², Cramér's V, w WORKS EVERYWHERE YOU READ DATA • Paste columns from Excel, Google Sheets, SPSS output or a web table • Highlight numbers on any web page, right-click and choose "Analyze selected numbers" • Highlight a term such as "moderated mediation", right-click and choose "Find a free statistics tool" • Type fst and a space in the address bar (for example: fst sample size) to open any of 120+ tools NEED MORE? One click opens the full tool on FreeStatisticalTools.com, with charts, assumption checks, post hoc tests and Word reports. Your data is copied, so you just paste it in. There are 120+ free tools in all, including PLS-SEM, CB-SEM and CFA, PROCESS-style mediation and moderation, exploratory factor analysis, sample size and power, meta-analysis, bibliometric analysis and marketing research. PRIVATE BY DESIGN • All calculations run locally in the extension • No access to the websites you visit: only the text you choose to send it • No account, no tracking of your data, no ads in the extension Accuracy: results are checked against Python's SciPy on hundreds of test cases. Made by FreeStatisticalTools.com. Also available as a Google Sheets add-on.