# crosstabs.com

> Free, browser-based cross-tabulation and categorical statistics. No signup, no install — upload a CSV or XLSX and get crosstabs with chi-square, Cramér's V, Fisher's exact test, odds ratios, and 20+ measures, computed locally in the browser.

## Start here

- [Crosstabs — free crosstab & chi-square calculator](https://www.crosstabs.com): Free browser-based cross-tabulation and categorical statistics. No signup, no install.
- [Crosstab workspace](https://www.crosstabs.com/workspace): Upload a CSV or XLSX and build crosstabs with chi-square, Cramér's V, and 20+ measures in your browser.

## Calculators

- [Crosstab Maker](https://www.crosstabs.com/crosstab-maker): Build cross-tabulation tables online from spreadsheet data, free.
- [Cross-Tabulation Calculator](https://www.crosstabs.com/cross-tabulation-calculator): Cross-tabulate two categorical variables with counts, percentages, and tests.
- [Survey Crosstab Tool](https://www.crosstabs.com/survey-crosstab-tool): Cross-tabulate survey responses with banners, weights, and significance flags.
- [Contingency Table Calculator](https://www.crosstabs.com/contingency-table-calculator): Build contingency tables and run chi-square, Fisher's exact, and odds ratios.
- [Chi-Square Calculator](https://www.crosstabs.com/chi-square-calculator): Chi-square test of independence with p-value, degrees of freedom, and Cramér's V.
- [Fisher's Exact Test](https://www.crosstabs.com/fishers-exact-test): Exact test for 2×2 tables and small samples where chi-square assumptions fail.
- [Cramér's V Calculator](https://www.crosstabs.com/cramers-v-calculator): Effect-size measure for chi-square; how strong the association is, from 0 to 1.
- [Odds Ratio Calculator](https://www.crosstabs.com/odds-ratio-calculator): Odds ratio with 95% confidence interval for 2×2 contingency tables.
- [Excel Crosstab Tool](https://www.crosstabs.com/excel-crosstab): Create crosstabs directly from XLSX files in your browser — free, no install.
- [SPSS Crosstab Alternative](https://www.crosstabs.com/spss-crosstab-alternative): A free, browser-based alternative to SPSS for survey crosstabs and chi-square.
- [Market Research Crosstabs](https://www.crosstabs.com/market-research-crosstabs): Survey banner tables, weighting, and exports for market research, free.

## Statistical measures & tests

- [Phi Coefficient Calculator](https://www.crosstabs.com/phi-coefficient-calculator): Phi (φ) — association strength for a 2×2 table; equals Cramér's V when 2×2.
- [Contingency Coefficient Calculator](https://www.crosstabs.com/contingency-coefficient-calculator): Pearson's C — chi-square-based association that cannot quite reach 1.
- [G-Test Calculator](https://www.crosstabs.com/g-test-calculator): Likelihood-ratio chi-square (G-test) of independence for contingency tables.
- [Goodman & Kruskal's Lambda Calculator](https://www.crosstabs.com/goodman-kruskal-lambda-calculator): Lambda (λ) — proportional reduction in error for predicting one variable from another.
- [Goodman & Kruskal's Gamma Calculator](https://www.crosstabs.com/goodman-kruskal-gamma-calculator): Gamma (γ) — ordinal association from concordant and discordant pairs.
- [Kendall's Tau Calculator](https://www.crosstabs.com/kendalls-tau-calculator): Kendall's tau-b and tau-c — ordinal association corrected for ties and table shape.
- [Somers' d Calculator](https://www.crosstabs.com/somers-d-calculator): Somers' d — asymmetric ordinal association with a designated dependent variable.
- [Uncertainty Coefficient (Theil's U) Calculator](https://www.crosstabs.com/uncertainty-coefficient-calculator): Theil's U — entropy-based measure of how much one variable predicts another.
- [Chi-Square Goodness of Fit Calculator](https://www.crosstabs.com/chi-square-goodness-of-fit-calculator): Test whether observed counts of one variable match an expected distribution.
- [Chi-Square Critical Value Calculator](https://www.crosstabs.com/chi-square-critical-value-calculator): Critical values from α and df, and p-values from a χ² statistic and df.
- [McNemar's Test Calculator](https://www.crosstabs.com/mcnemar-test-calculator): Paired 2×2 test for before/after change, with corrected and exact p-values.
- [Cohen's Kappa Calculator](https://www.crosstabs.com/cohens-kappa-calculator): Inter-rater agreement beyond chance, with 95% CI and Landis–Koch labels.
- [Significance Letters in Crosstabs](https://www.crosstabs.com/crosstab-significance-letters): What the A/B/C letters on banner tables mean and how to run column-proportions tests free.
- [Open a .sav File Without SPSS](https://www.crosstabs.com/open-sav-file-without-spss): Read SPSS .sav files free in your browser with variable and value labels preserved — then crosstab and export.
- [Multi-Select ('Select All That Apply') Crosstabs](https://www.crosstabs.com/multi-select-crosstab): Crosstab multi-select survey questions correctly: % of cases, per-option significance, auto-detected from split-column and comma-separated exports.

## Comparisons & decision guides

- [SurveyMonkey Crosstab Alternative](https://www.crosstabs.com/surveymonkey-crosstab-alternative): A free, browser-based alternative to SurveyMonkey crosstabs for exported responses.
- [Displayr Alternative (Lightweight)](https://www.crosstabs.com/displayr-alternative): A free, lightweight alternative to Displayr for quick crosstabs with significance tests.
- [Q Research Software Alternative](https://www.crosstabs.com/q-research-software-alternative): A free, browser-based alternative to Q for crosstab work on CSV/XLSX exports.
- [Chi-Square vs Fisher's Exact Test](https://www.crosstabs.com/chi-square-vs-fishers-exact): When to use the chi-square approximation versus Fisher's exact test.
- [Cramér's V vs Phi Coefficient](https://www.crosstabs.com/cramers-v-vs-phi): How Cramér's V and phi relate, and which effect size to report.
- [Odds Ratio vs Risk Ratio](https://www.crosstabs.com/odds-ratio-vs-risk-ratio): The difference between odds ratios and risk (relative) ratios, and when each fits.
- [Which Statistical Test Should I Use?](https://www.crosstabs.com/which-statistical-test): A decision guide for choosing a test for categorical and crosstab data.

## Guides

- [All calculators & guides](https://www.crosstabs.com/calculators): Browse every crosstabs.com calculator, measure explainer, and comparison guide.
- [About crosstabs.com](https://www.crosstabs.com/about): What crosstabs.com is, who it's for, and how its statistics are computed and verified.
- [How to Read a Crosstab](https://www.crosstabs.com/crosstab-guide): A plain-language guide to reading cross-tabulation tables and their statistics.
- [Methods](https://www.crosstabs.com/methods): How crosstabs.com computes each statistic, with formulas and references.
- [Sample datasets](https://www.crosstabs.com/samples): Example datasets and walkthroughs for trying crosstabs.
- [Worked crosstab examples](https://www.crosstabs.com/examples): Famous real contingency tables (Titanic, Berkeley, Doll & Hill…) fully worked through with chi-square, p-values, and effect sizes.
- [Expected Count Less Than 5 in Chi-Square](https://www.crosstabs.com/chi-square-expected-count-less-than-5): What the 'expected cell count less than 5' warning means and what to do about it.
- [Chi-Square Test in Excel](https://www.crosstabs.com/chi-square-test-in-excel): How to run a chi-square test in Excel with CHISQ.TEST — and a faster way.
- [SPSS CROSSTABS Syntax](https://www.crosstabs.com/spss-crosstabs-syntax): The CROSSTABS command explained subcommand by subcommand, with a free alternative.
- [Crosstab in Google Sheets](https://www.crosstabs.com/crosstab-in-google-sheets): Build a crosstab with a Google Sheets pivot table — and how to add significance tests.
- [Free statistics API](https://www.crosstabs.com/developers): JSON API for chi-square, Fisher's exact, odds ratios, and 20+ measures. No key required.
- [Crosstabs MCP server](https://www.crosstabs.com/mcp): Give Claude and other AI assistants 40+ exact contingency-table statistics tools. pip install crosstabs.

## About

- [About](https://www.crosstabs.com/about): What crosstabs.com is and how its statistics are computed and verified.
- [Full content for LLMs](https://www.crosstabs.com/llms-full.txt): Liftable definitions, formulas, and worked examples.