Online p-Value Calculators and Statistical Tools

Access 20 online p-value tools for statistical hypothesis testing. Calculate p-values from Z, t, F, and chi-square scores securely on our servers with no software installation required.

Perform statistical hypothesis testing and probability calculations with our collection of 20 p-value tools. Easily compute p-values from various test statistics—including t-tests, Z-tests, chi-square, and F-distributions—directly through your browser, with all processing handled securely on our servers.

20 Tools

Math, Date & Finance
ANOVA Calculator
Run one-way ANOVA across multiple groups and inspect sums of squares, F statistic, and p-value
Math, Date & Finance
Chi-Square Distribution Calculator
Calculate chi-square distribution PDF, CDF, and right-tail probability from a statistic and degrees of freedom
Math, Date & Finance
Chi-Square Test Calculator
Run chi-square goodness-of-fit or independence tests from observed counts or contingency tables
Math, Date & Finance
Fisher Exact Test Calculator
Run Fisher exact test for a 2 x 2 contingency table with exact one-sided or two-sided p-values
Math, Date & Finance
Kruskal-Wallis Calculator
Compare three or more independent groups with the nonparametric Kruskal-Wallis H test
Math, Date & Finance
Mann-Whitney U Test Calculator
Compare two independent samples with the nonparametric Mann-Whitney U rank-sum test
Math, Date & Finance
McNemar Test Calculator
Test paired binary categorical changes with exact binomial or continuity-corrected chi-square McNemar test
Math, Date & Finance
One Proportion Z Test Calculator
Run a one-proportion Z test from success count, trial count, and hypothesized population proportion
Math, Date & Finance
One Sample t Test Calculator
Run a one-sample t test from raw data or summary statistics, including p-value and confidence interval
Math, Date & Finance
One-Way ANOVA Calculator
Compare means across three or more independent groups with a one-way ANOVA F test
Math, Date & Finance
P Value Calculator
Calculate one-tailed or two-tailed p-values for Z, t, chi-square, and F test statistics
Math, Date & Finance
Paired t Test Calculator
Run paired-sample t tests from before and after values or precomputed paired differences
Math, Date & Finance
T Distribution Calculator
Calculate Student t distribution PDF, CDF, tail probability, two-tail probability, and central area
Math, Date & Finance
T-Test Calculator
Run one-sample or two-sample t-tests from raw data and inspect t statistics, degrees of freedom, and p-values
Math, Date & Finance
Two Proportion Z Test Calculator
Compare two independent proportions with a pooled two-proportion Z test and confidence interval
Math, Date & Finance
Two Sample t Test Calculator
Run an independent two-sample t test with pooled variance from raw data or summary statistics
Math, Date & Finance
Two-Way ANOVA Calculator
Analyze two categorical factors and their interaction with a two-way ANOVA table
Math, Date & Finance
Welch t Test Calculator
Run Welch two-sample t tests for independent groups with unequal variances from raw data or summary statistics
Math, Date & Finance
Wilcoxon Signed-Rank Calculator
Run a paired nonparametric Wilcoxon signed-rank test from paired samples or differences
Math, Date & Finance
Z Test Calculator
Run one-sample Z tests for a mean with known population standard deviation or a single population proportion

Related Tags

Math

308 Tools

Access 308 online math tools for calculations, conversions, and data processing. No software installation required. Secure server-side processing with automatic file deletion.

T-Test

12 Tools

Perform statistical hypothesis testing with 12 online t-test tools. Compare sample means, calculate p-values, and analyze datasets securely without software installation.

Chi-Square Test

3 Tools

Perform chi-square tests of independence and goodness-of-fit online. Input contingency tables or frequency data for instant statistical analysis on our secure servers.

F-Test

5 Tools

Perform F-tests, calculate p-values, find critical values, and analyze variance ratios online. Secure server-side processing with automatic file deletion.

Group

15 Tools

Access 15 online tools to group, categorize, and organize text, lists, and datasets. Process files securely on our servers with automatic deletion after 6 hours.

Group Comparison

3 Tools

Compare and analyze multiple data groups online. Process datasets, identify differences, and generate comparison reports without installing software.

FAQ

What types of statistical distributions do these p-value tools support?

The tools support a wide range of standard distributions, allowing you to calculate p-values from t-scores, Z-scores, chi-square statistics, and F-ratios for both one-tailed and two-tailed tests.

Do I need to install any software to calculate p-values?

No software installation is required. You can input your test statistics directly in your web browser, and our servers will process the calculations instantly.

How secure is the data I enter into the p-value calculators?

Your data is processed securely on our servers. Text inputs are not stored, and any uploaded data files are automatically and permanently deleted after 6 hours.