Sample Size Calculator
Two-sample t-Test Paired t-Test Analysis of variance Wilcoxon Test Single proportion Chi-squared Test Fisher's exact Test McNemar's Test Logrank Test Correlation Test
Sample size calculator
Version 1.061


Welcome to the online Sample Size Calculator

The Sample Size Calculator is intended to aid researches in planning adequately powered studies. It covers sample size and power calculations for many widely used hypothesis tests.

Use the menu to select the hypothesis test for which you want to calculate the sample size or power.