Statistics Calculators

Here you'll find a set of statistics calculators that are intuitive and easy to use. Included are a variety of tests of significance, plus correlation, effect size and confidence interval calculators.

If you're not sure what statistics calculator you require, check out our Which Statistics Test? wizard.

Significance Tests

• One-Way ANOVA Calculator for Independent Measures
  
  
• One-Way ANOVA Calculator for Repeated Measures
  
  
• Binomial Test Calculator
  
  
• Chi-Square Calculator for 2 x 2 Contingency Table
  
  
• Chi-Square Calculator for 5 x 5 (or less) Contingency Table
  
  
• Chi-Square Calculator for Goodness of Fit
  
  
• Fisher Exact Test Calculator for 2 x 2 Contingency Table
  
  
• The Friedman Test for Repeated Measures
  
  
• The Kolmogorov-Smirnov Test of Normality
  
  
• Kruskal-Wallis Test Calculator for Independent Measures
  
  
• Levene's Test of Homogeneity of Variance Calculator
  
  
• Mann-Whitney U Test Calculator
  
  
• Sign Test Calculator
  
  
• Standard Error Calculator
  
  
• T-Test Calculator for 2 Independent Means
  
  
• T-Test Calculator for 2 Dependent Means
  
  
• T-Test Calculator for a Single Sample
  
  
• Wilcoxon Signed-Rank Test Calculator
  
  
• Z Score Calculator for a Single Raw Value
  
  
• Z-Test Calculator for a Single Sample
  
  
• Z-Test Calculator for 2 Population Proportions
  
  

Prediction

• Linear Regression Calculator
  
  
• Multiple Regression Calculator
  
  

Tests of Correlation

• Pearson Correlation Coefficient Calculator
  
  
• Phi Coefficient Calculator
  
  
• Point-Biserial Correlation Coefficient Calculator
  
  
• Spearman's Rho (Correlation) Calculator
  
  

P Values

• P-value from Z score.
  
  
• P-value from t score.
  
  
• P-value from chi-square score.
  
  
• P-value from F-ratio score.
  
  
• P-value from Pearson (r) score.
  
  
• Critical Values Calculator
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• Tukey Q calculator.
  
  

Bayes Theorem

• Quick Bayes Theorem Calculator
  
  

Effect Size

• Effect Size Calculators
  
  

Confidence Intervals

• A Single Sample Confidence Interval Calculator (T Statistic)
  
  
• A Single-Sample Confidence Interval Calculator (Z Statistic)
  
  
• An Independent Samples Confidence Interval Calculator
  
  

Biostatistics

• Number Needed To Treat Calculator
  
  
• Relative Risk and Odds Ratio Calculator
  
  

Utilities

• Sample Size Calculator
  
  
• Random Number Generator
  
  
• A Baby Growth Percentile Calculator
  
  
• A Normal Distribution Generator
  
  
• A Rank Order Calculator
  
  
• Highest Common Factor Calculator
  
  
• Number Formatters and Transformers
  
  
• Number Formatter: European Format to North American Format
  
  
• Number Formatter: North American Format to European Format
  
  
• Running Pace Calculator
  
  

Not sure which statistics test you should use? Check out our wizard!