# One-Sample t-Test Calculator

Compute a complete one-sample t-test, given the sample size, the observed the sample mean, the hypothesized mean, and the sample standard deviation. The calculator computes the t-value, the degrees of freedom, the critical t-value and p-value for a one-tailed (directional) hypothesis, and the critical t-value and p-value for a two-tailed (non-directional) hypothesis. Conducting one-sample t-tests is very common in a wide variety of analytics studies.

Please provide the necessary values, and then click 'Calculate'.