Calculators
Free Online Statistical Calculators
A collection of free statistical calculators that run in your browser. Paste your data, choose the test you need, and get publication-ready output — test statistic, p-value, effect size and a plain-English interpretation — without installing anything.
t-Test Calculator
One-sample, paired and independent t-tests for comparing means.
Open calculatorANOVA Calculator
One-way, two-way and repeated-measures ANOVA for three or more groups.
Open calculatorChi-Square Test Calculator
Goodness-of-fit and independence tests for categorical data.
Open calculatorCorrelation Coefficient Calculator
Pearson r and Spearman rho for measuring linear and rank relationships.
Open calculatorLinear Regression Calculator
Simple and multiple linear regression with coefficients, R-squared and residuals.
Open calculatorDescriptive Statistics Calculator
Mean, median, standard deviation, variance, skewness and kurtosis.
Open calculatorFrequently asked questions
Are the calculators really free?+
Yes. Every calculator listed on this page is free to use with no account required. You can run unlimited analyses in the browser, and your data never leaves your session unless you explicitly save it.
Do I need to install anything?+
No installation is required. DeepStats runs entirely in your browser and works on Windows, macOS, Linux, Chromebooks and tablets. As long as you have a modern browser you can paste a dataset and get results in seconds.
How accurate are the results?+
The numerical computations are backed by the same open-source libraries used in academic research: scipy, statsmodels and scikit-learn. Results match what you would get in SPSS, R or Python to several decimal places.
Can I use these calculators for my thesis or research paper?+
Yes. The statistics reported are the standard figures journals and methods courses expect: test statistic, degrees of freedom, p-value, effect size and confidence interval. Always double-check assumptions for your specific dataset.
What file formats are supported?+
You can upload CSV, TSV and Excel (.xlsx) files, or paste data directly into the built-in spreadsheet grid. The first row is treated as the header and each subsequent row as one observation.
Ready to run your own analysis?
Open the full analyzer with all 88 statistical tests in one place.